From 8bec10a47d9220e9f43d9cd543dbf01c9038d78e Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Tue, 23 Nov 2021 15:53:32 -0800
Subject: [PATCH 01/21] Init MorphMany

---
 src/index.ts                                  |   4 +
 src/model/Model.ts                            |  17 ++
 src/model/attributes/relations/MorphMany.ts   | 102 +++++++++++
 .../attributes/relations/MorphMany.ts         |  20 +++
 .../relations/morph_many_retrieve.spec.ts     | 164 ++++++++++++++++++
 5 files changed, 307 insertions(+)
 create mode 100644 src/model/attributes/relations/MorphMany.ts
 create mode 100644 src/model/decorators/attributes/relations/MorphMany.ts
 create mode 100644 test/feature/relations/morph_many_retrieve.spec.ts

diff --git a/src/index.ts b/src/index.ts
index b8a78fa..f358616 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -16,6 +16,7 @@ export * from './model/decorators/attributes/relations/BelongsTo'
 export * from './model/decorators/attributes/relations/HasMany'
 export * from './model/decorators/attributes/relations/HasManyBy'
 export * from './model/decorators/attributes/relations/MorphOne'
+export * from './model/decorators/attributes/relations/MorphMany'
 export * from './model/decorators/Contracts'
 export * from './model/decorators/NonEnumerable'
 export * from './model/attributes/Attribute'
@@ -31,6 +32,7 @@ export { BelongsTo as BelongsToAttr } from './model/attributes/relations/Belongs
 export { HasMany as HasManyAttr } from './model/attributes/relations/HasMany'
 export { HasManyBy as HasManyByAttr } from './model/attributes/relations/HasManyBy'
 export { MorphOne as MorphOneAttr } from './model/attributes/relations/MorphOne'
+export { MorphMany as MorphManyAttr } from './model/attributes/relations/MorphMany'
 export * from './modules/RootModule'
 export * from './modules/RootState'
 export * from './modules/Module'
@@ -63,6 +65,7 @@ import { BelongsTo as BelongsToAttr } from './model/attributes/relations/Belongs
 import { HasMany as HasManyAttr } from './model/attributes/relations/HasMany'
 import { HasManyBy as HasManyByAttr } from './model/attributes/relations/HasManyBy'
 import { MorphOne as MorphOneAttr } from './model/attributes/relations/MorphOne'
+import { MorphMany as MorphManyAttr } from './model/attributes/relations/MorphMany'
 import { Repository } from './repository/Repository'
 import { Interpreter } from './interpreter/Interpreter'
 import { Query } from './query/Query'
@@ -88,6 +91,7 @@ export default {
   HasManyAttr,
   HasManyByAttr,
   MorphOneAttr,
+  MorphManyAttr,
   Repository,
   Interpreter,
   Query,
diff --git a/src/model/Model.ts b/src/model/Model.ts
index e99d548..fe9bfb8 100644
--- a/src/model/Model.ts
+++ b/src/model/Model.ts
@@ -12,6 +12,7 @@ import { BelongsTo } from './attributes/relations/BelongsTo'
 import { HasMany } from './attributes/relations/HasMany'
 import { HasManyBy } from './attributes/relations/HasManyBy'
 import { MorphOne } from './attributes/relations/MorphOne'
+import { MorphMany } from './attributes/relations/MorphMany'
 
 export type ModelFields = Record<string, Attribute>
 export type ModelSchemas = Record<string, ModelFields>
@@ -247,6 +248,22 @@ export class Model {
     return new MorphOne(model, related.newRawInstance(), id, type, localKey)
   }
 
+  /**
+   * Create a new MorphMany relation instance.
+   */
+  static morphMany(
+    related: typeof Model,
+    id: string,
+    type: string,
+    localKey?: string
+  ): MorphMany {
+    const model = this.newRawInstance()
+
+    localKey = localKey ?? model.$getLocalKey()
+
+    return new MorphMany(model, related.newRawInstance(), id, type, localKey)
+  }
+
   /**
    * Get the constructor for this model.
    */
diff --git a/src/model/attributes/relations/MorphMany.ts b/src/model/attributes/relations/MorphMany.ts
new file mode 100644
index 0000000..1c04beb
--- /dev/null
+++ b/src/model/attributes/relations/MorphMany.ts
@@ -0,0 +1,102 @@
+import { Schema as NormalizrSchema } from 'normalizr'
+import { Schema } from '../../../schema/Schema'
+import { Element, Collection } from '../../../data/Data'
+import { Query } from '../../../query/Query'
+import { Model } from '../../Model'
+import { Relation, Dictionary } from './Relation'
+
+export class MorphMany extends Relation {
+  /**
+   * The field name that contains id of the parent model.
+   */
+  protected morphId: string
+
+  /**
+   * The field name that contains type of the parent model.
+   */
+  protected morphType: string
+
+  /**
+   * The local key of the model.
+   */
+  protected localKey: string
+
+  /**
+   * Create a new morph-many relation instance.
+   */
+  constructor(
+    parent: Model,
+    related: Model,
+    morphId: string,
+    morphType: string,
+    localKey: string
+  ) {
+    super(parent, related)
+    this.morphId = morphId
+    this.morphType = morphType
+    this.localKey = localKey
+  }
+
+  /**
+   * Get all related models for the relationship. TODO
+   */
+  getRelateds(): Model[] {
+    return [this.related]
+  }
+
+  /**
+   * Define the normalizr schema for the relation. TODO
+   */
+  define(schema: Schema): NormalizrSchema {
+    return schema.many(this.related, this.parent)
+  }
+
+  /**
+   * Attach the parent type and id to the given relation. TODO
+   */
+  attach(record: Element, child: Element): void {
+    child[this.morphId] = record[this.localKey]
+    child[this.morphType] = this.parent.$entity()
+  }
+
+  /**
+   * Set the constraints for an eager load of the relation. TODO
+   */
+  addEagerConstraints(query: Query, models: Collection): void {
+    query.where(this.morphType, this.parent.$entity())
+    query.whereIn(this.morphId, this.getKeys(models, this.localKey))
+  }
+
+  /**
+   * Match the eagerly loaded results to their parents.
+   */
+  match(relation: string, models: Collection, results: Collection): void {
+    const dictionary = this.buildDictionary(results)
+
+    models.forEach((model) => {
+      const key = model[this.localKey]
+
+      dictionary[key]
+        ? model.$setRelation(relation, dictionary[key])
+        : model.$setRelation(relation, [])
+    })
+  }
+
+  /**
+   * Build model dictionary keyed by the relation's foreign key.
+   */
+  protected buildDictionary(results: Collection): Dictionary {
+    return this.mapToDictionary(results, (result) => {
+      return [result[this.morphId], result]
+    })
+  }
+
+  /**
+   * Make related models. TODO
+   */
+  make(elements?: Element[]): Model[] {
+    return elements
+      ? elements.map((element) => this.related.$newInstance(element))
+      : []
+  }
+}
diff --git a/src/model/decorators/attributes/relations/MorphMany.ts b/src/model/decorators/attributes/relations/MorphMany.ts
new file mode 100644
index 0000000..fabf01a
--- /dev/null
+++ b/src/model/decorators/attributes/relations/MorphMany.ts
@@ -0,0 +1,20 @@
+import { Model } from '../../../Model'
+import { PropertyDecorator } from '../../Contracts'
+
+/**
+ * Create a morph-many attribute property decorator.
+ */
+export function MorphMany(
+  related: () => typeof Model,
+  id: string,
+  type: string,
+  localKey?: string
+): PropertyDecorator {
+  return (target, propertyKey) => {
+    const self = target.$self()
+
+    self.setRegistry(propertyKey, () =>
+      self.morphMany(related(), id, type, localKey)
+    )
+  }
+}
diff --git a/test/feature/relations/morph_many_retrieve.spec.ts b/test/feature/relations/morph_many_retrieve.spec.ts
new file mode 100644
index 0000000..0c76afe
--- /dev/null
+++ b/test/feature/relations/morph_many_retrieve.spec.ts
@@ -0,0 +1,164 @@
+import { createStore, fillState, assertModel, assertInstanceOf } from 'test/Helpers'
+import { Model, Str, Num, MorphMany } from '@/index'
+
+describe('feature/relations/morph_many_retrieve', () => {
+  class Comment extends Model {
+    static entity = 'comments'
+
+    @Num(0) id!: number
+    @Str('') body!: string
+    @Num(0) commentableId!: number
+    @Str('') commentableType!: string
+  }
+
+  class Video extends Model {
+    static entity = 'videos'
+
+    @Num(0) id!: number
+    @Str('') link!: string
+
+    @MorphMany(() => Comment, 'commentableId', 'commentableType')
+    comments!: Comment[]
+  }
+
+  class Post extends Model {
+    static entity = 'posts'
+
+    @Num(0) id!: number
+    @Str('') title!: string
+    @MorphMany(() => Comment, 'commentableId', 'commentableType')
+    comments!: Comment[]
+  }
+
+  const ENTITIES = {
+    videos: { 1: { id: 1, link: '/video.mp4' } },
+    posts: {
+      1: { id: 1, title: 'Hello, world!' },
+      2: { id: 2, title: 'Hello, world! Again!' }
+    },
+    comments: {
+      1: {
+        id: 1,
+        body: 'Cool Video!',
+        commentableId: 1,
+        commentableType: 'videos'
+      },
+      2: {
+        id: 2,
+        body: 'Cool Video Again!',
+        commentableId: 1,
+        commentableType: 'videos'
+      },
+      3: {
+        id: 3,
+        body: 'Cool Post!',
+        commentableId: 1,
+        commentableType: 'posts'
+      },
+      4: {
+        id: 4,
+        body: 'Cool Post 2!',
+        commentableId: 2,
+        commentableType: 'posts'
+      }
+    }
+  }
+
+  describe('when there are comments', () => {
+    const store = createStore()
+
+    fillState(store, ENTITIES)
+
+    it('can eager load morph many relation for video', () => {
+      const video = store.$repo(Video).with('comments').first()!
+
+      expect(video).toBeInstanceOf(Video)
+      assertInstanceOf(video.comments, Comment)
+      assertModel(video, {
+        id: 1,
+        link: '/video.mp4',
+        comments: [
+          {
+            id: 1,
+            body: 'Cool Video!',
+            commentableId: 1,
+            commentableType: 'videos'
+          },
+          {
+            id: 2,
+            body: 'Cool Video Again!',
+            commentableId: 1,
+            commentableType: 'videos'
+          }
+        ]
+      })
+    })
+
+    it('can eager load morph one relation for post', () => {
+      const post = store.$repo(Post).with('comments').first()!
+
+      expect(post).toBeInstanceOf(Post)
+      assertInstanceOf(post.comments, Comment)
+      assertModel(post, {
+        id: 1,
+        title: 'Hello, world!',
+        comments: [{
+          id: 3,
+          body: 'Cool Post!',
+          commentableId: 1,
+          commentableType: 'posts'
+        }]
+      })
+    })
+  })
+
+  describe('when there are no images', () => {
+    const store = createStore()
+
+    fillState(store, {
+      videos: {
+        1: { id: 1, link: '/video.mp4' }
+      },
+      posts: {},
+      comments: {}
+    })
+
+    it('can eager load missing relation as empty array', () => {
+      const video = store.$repo(Video).with('comments').first()!
+
+      expect(video).toBeInstanceOf(Video)
+      assertModel(video, {
+        id: 1,
+        link: '/video.mp4',
+        comments: []
+      })
+    })
+  })
+
+  it('can revive "has many" relations', () => {
+    const store = createStore()
+
+    fillState(store, {
+      videos: {
+        1: { id: 1, link: '/video.mp4' }
+      },
+      comments: {
+        1: { id: 1, commentableId: 1, commentableType: 'videos', body: 'Cool Video!' },
+        2: { id: 2, commentableId: 1, commentableType: 'videos', body: 'Cool Video Again!' }
+      }
+    })
+
+    const schema = {
+      id: '1',
+      comments: [{ id: 2 }, { id: 1 }]
+    }
+
+    const video = store.$repo(Video).revive(schema)!
+
+    expect(video.comments.length).toBe(2)
+    expect(video.comments[0]).toBeInstanceOf(Comment)
+    expect(video.comments[1]).toBeInstanceOf(Comment)
+    expect(video.comments[0].id).toBe(2)
+    expect(video.comments[1].id).toBe(1)
+  })
+})

From 2f75dcd1dd2956c46f5c2ba897e9a139a9ad4686 Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Wed, 24 Nov 2021 14:57:30 -0800
Subject: [PATCH 02/21] Adding MorphMany tests, removing TODOs from tested
 MorphMany methods.

---
 src/model/attributes/relations/MorphMany.ts   |   8 +-
 .../relations/morph_many_retrieve.spec.ts     |  43 ++++--
 .../feature/relations/morph_many_save.spec.ts | 127 ++++++++++++++++++
 .../morph_many_save_custom_key.spec.ts        | 121 +++++++++++++++++
 .../relations/morph_many_save_uid.spec.ts     | 111 +++++++++++++++
 test/unit/model/Model_Relations.spec.ts       |  32 ++++-
 6 files changed, 424 insertions(+), 18 deletions(-)
 create mode 100644 test/feature/relations/morph_many_save.spec.ts
 create mode 100644 test/feature/relations/morph_many_save_custom_key.spec.ts
 create mode 100644 test/feature/relations/morph_many_save_uid.spec.ts

diff --git a/src/model/attributes/relations/MorphMany.ts b/src/model/attributes/relations/MorphMany.ts
index 1c04beb..0ef330c 100644
--- a/src/model/attributes/relations/MorphMany.ts
+++ b/src/model/attributes/relations/MorphMany.ts
@@ -45,14 +45,14 @@ export class MorphMany extends Relation {
   }
 
   /**
-   * Define the normalizr schema for the relation. TODO
+   * Define the normalizr schema for the relation.
    */
   define(schema: Schema): NormalizrSchema {
     return schema.many(this.related, this.parent)
   }
 
   /**
-   * Attach the parent type and id to the given relation. TODO
+   * Attach the parent type and id to the given relation.
    */
   attach(record: Element, child: Element): void {
     child[this.morphId] = record[this.localKey]
@@ -60,7 +60,7 @@ export class MorphMany extends Relation {
   }
 
   /**
-   * Set the constraints for an eager load of the relation. TODO
+   * Set the constraints for an eager load of the relation.
    */
   addEagerConstraints(query: Query, models: Collection): void {
     query.where(this.morphType, this.parent.$entity())
@@ -92,7 +92,7 @@ export class MorphMany extends Relation {
   }
 
   /**
-   * Make related models. TODO
+   * Make related models.
    */
   make(elements?: Element[]): Model[] {
     return elements
diff --git a/test/feature/relations/morph_many_retrieve.spec.ts b/test/feature/relations/morph_many_retrieve.spec.ts
index 0c76afe..1629ff3 100644
--- a/test/feature/relations/morph_many_retrieve.spec.ts
+++ b/test/feature/relations/morph_many_retrieve.spec.ts
@@ -1,5 +1,10 @@
-import { createStore, fillState, assertModel, assertInstanceOf } from 'test/Helpers'
-import { Model, Str, Num, MorphMany } from '@/index'
+import {
+  createStore,
+  fillState,
+  assertModel,
+  assertInstanceOf
+} from 'test/Helpers'
+import { Model, Attr, Str, Num, MorphMany } from '@/index'
 
 describe('feature/relations/morph_many_retrieve', () => {
   class Comment extends Model {
@@ -7,8 +12,8 @@ describe('feature/relations/morph_many_retrieve', () => {
 
     @Num(0) id!: number
     @Str('') body!: string
-    @Num(0) commentableId!: number
-    @Str('') commentableType!: string
+    @Attr(null) commentableId!: number | null
+    @Attr(null) commentableType!: string | null
   }
 
   class Video extends Model {
@@ -102,12 +107,14 @@ describe('feature/relations/morph_many_retrieve', () => {
       assertModel(post, {
         id: 1,
         title: 'Hello, world!',
-        comments: [{
-          id: 3,
-          body: 'Cool Post!',
-          commentableId: 1,
-          commentableType: 'posts'
-        }]
+        comments: [
+          {
+            id: 3,
+            body: 'Cool Post!',
+            commentableId: 1,
+            commentableType: 'posts'
+          }
+        ]
       })
     })
   })
@@ -135,7 +142,7 @@ describe('feature/relations/morph_many_retrieve', () => {
     })
   })
 
-  it('can revive "has many" relations', () => {
+  it('can revive "morph many" relations', () => {
     const store = createStore()
 
     fillState(store, {
@@ -143,8 +150,18 @@ describe('feature/relations/morph_many_retrieve', () => {
         1: { id: 1, link: '/video.mp4' }
       },
       comments: {
-        1: { id: 1, commentableId: 1, commentableType: 'videos', body: 'Cool Video!' },
-        2: { id: 2, commentableId: 1, commentableType: 'videos', body: 'Cool Video Again!' }
+        1: {
+          id: 1,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video!'
+        },
+        2: {
+          id: 2,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video Again!'
+        }
       }
     })
 
diff --git a/test/feature/relations/morph_many_save.spec.ts b/test/feature/relations/morph_many_save.spec.ts
new file mode 100644
index 0000000..212abe3
--- /dev/null
+++ b/test/feature/relations/morph_many_save.spec.ts
@@ -0,0 +1,127 @@
+import { createStore, fillState, assertState } from 'test/Helpers'
+import { Model, Attr, Num, Str, MorphMany } from '@/index'
+
+describe('feature/relations/morph_many_save', () => {
+  class Comment extends Model {
+    static entity = 'comments'
+
+    @Num(0) id!: number
+    @Str('') body!: string
+    @Attr(null) commentableId!: number | null
+    @Attr(null) commentableType!: string | null
+  }
+
+  class Video extends Model {
+    static entity = 'videos'
+
+    @Num(0) id!: number
+    @Str('') link!: string
+
+    @MorphMany(() => Comment, 'commentableId', 'commentableType')
+    comments!: Comment[]
+  }
+
+  it('saves a model to the store with "morph many" relation', () => {
+    const store = createStore()
+
+    fillState(store, {
+      videos: {},
+      comments: {
+        1: {
+          id: 1,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Some Comment'
+        }
+      }
+    })
+
+    store.$repo(Video).save({
+      id: 1,
+      link: '/video.mp4',
+      comments: [
+        {
+          id: 1,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video!'
+        },
+        {
+          id: 2,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video Again!'
+        }
+      ]
+    })
+
+    assertState(store, {
+      videos: {
+        1: { id: 1, link: '/video.mp4' }
+      },
+      comments: {
+        1: {
+          id: 1,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video!'
+        },
+        2: {
+          id: 2,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video Again!'
+        }
+      }
+    })
+  })
+
+  it('generates missing foreign key', async () => {
+    const store = createStore()
+
+    store.$repo(Video).save({
+      id: 1,
+      link: '/video.mp4',
+      comments: [
+        { id: 1, body: 'Cool Video!' },
+        { id: 2, body: 'Cool Video Again!' }
+      ]
+    })
+
+    assertState(store, {
+      videos: {
+        1: { id: 1, link: '/video.mp4' }
+      },
+      comments: {
+        1: {
+          id: 1,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video!'
+        },
+        2: {
+          id: 2,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video Again!'
+        }
+      }
+    })
+  })
+
+  it('can insert a record with missing related data', async () => {
+    const store = createStore()
+
+    store.$repo(Video).save({
+      id: 1,
+      link: '/video.mp4'
+    })
+
+    assertState(store, {
+      videos: {
+        1: { id: 1, link: '/video.mp4' }
+      },
+      comments: {}
+    })
+  })
+})
diff --git a/test/feature/relations/morph_many_save_custom_key.spec.ts b/test/feature/relations/morph_many_save_custom_key.spec.ts
new file mode 100644
index 0000000..5bc16fa
--- /dev/null
+++ b/test/feature/relations/morph_many_save_custom_key.spec.ts
@@ -0,0 +1,121 @@
+import { createStore, assertState } from 'test/Helpers'
+import { Model, Attr, Num, Str, MorphMany } from '@/index'
+
+describe('feature/relations/morph_many_save_custom_key', () => {
+  beforeEach(() => {
+    Model.clearRegistries()
+  })
+
+  it('inserts "morph many" relation with custom primary key', () => {
+    class Comment extends Model {
+      static entity = 'comments'
+
+      @Num(0) id!: number
+      @Str('') body!: string
+      @Attr(null) commentableId!: number | null
+      @Attr(null) commentableType!: string | null
+    }
+
+    class Video extends Model {
+      static entity = 'videos'
+
+      static primaryKey = 'morphableId'
+
+      @Num(0) morphableId!: number
+      @Str('') link!: string
+
+      @MorphMany(() => Comment, 'commentableId', 'commentableType')
+      comments!: Comment[]
+    }
+
+    const store = createStore()
+
+    store.$repo(Video).save({
+      morphableId: 1,
+      link: '/video.mp4',
+      comments: [
+        { id: 1, body: 'Cool Video!' },
+        { id: 2, body: 'Cool Video Again!' }
+      ]
+    })
+
+    assertState(store, {
+      videos: {
+        1: { morphableId: 1, link: '/video.mp4' }
+      },
+      comments: {
+        1: {
+          id: 1,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video!'
+        },
+        2: {
+          id: 2,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video Again!'
+        }
+      }
+    })
+  })
+
+  it('inserts "morph many" relation with custom local key', () => {
+    class Comment extends Model {
+      static entity = 'comments'
+
+      @Num(0) id!: number
+      @Str('') body!: string
+      @Attr(null) commentableId!: number | null
+      @Attr(null) commentableType!: string | null
+    }
+
+    class Video extends Model {
+      static entity = 'videos'
+
+      @Num(0) id!: number
+      @Num(0) morphableId!: number
+      @Str('') link!: string
+
+      @MorphMany(
+        () => Comment,
+        'commentableId',
+        'commentableType',
+        'morphableId'
+      )
+      comments!: Comment[]
+    }
+
+    const store = createStore()
+
+    store.$repo(Video).save({
+      id: 1,
+      morphableId: 2,
+      link: '/video.mp4',
+      comments: [
+        { id: 1, body: 'Cool Video!' },
+        { id: 2, body: 'Cool Video Again!' }
+      ]
+    })
+
+    assertState(store, {
+      videos: {
+        1: { id: 1, morphableId: 2, link: '/video.mp4' }
+      },
+      comments: {
+        1: {
+          id: 1,
+          commentableId: 2,
+          commentableType: 'videos',
+          body: 'Cool Video!'
+        },
+        2: {
+          id: 2,
+          commentableId: 2,
+          commentableType: 'videos',
+          body: 'Cool Video Again!'
+        }
+      }
+    })
+  })
+})
diff --git a/test/feature/relations/morph_many_save_uid.spec.ts b/test/feature/relations/morph_many_save_uid.spec.ts
new file mode 100644
index 0000000..d951f61
--- /dev/null
+++ b/test/feature/relations/morph_many_save_uid.spec.ts
@@ -0,0 +1,111 @@
+import { createStore, assertState, mockUid } from 'test/Helpers'
+import { Model, Attr, Uid, Str, Num, MorphMany } from '@/index'
+
+describe('feature/relations/morph_many_save_uid', () => {
+  beforeEach(() => {
+    Model.clearRegistries()
+  })
+
+  it('inserts "morph many" relation with parent having "uid" field as the primary key', () => {
+    class Comment extends Model {
+      static entity = 'comments'
+
+      @Num(0) id!: number
+      @Str('') body!: string
+      @Attr(null) commentableId!: string | null
+      @Attr(null) commentableType!: string | null
+    }
+
+    class Video extends Model {
+      static entity = 'videos'
+
+      @Uid() id!: string
+      @Str('') link!: string
+
+      @MorphMany(() => Comment, 'commentableId', 'commentableType')
+      comments!: Comment[]
+    }
+
+    mockUid(['uid1'])
+
+    const store = createStore()
+
+    store.$repo(Video).save({
+      link: '/video.mp4',
+      comments: [
+        { id: 1, body: 'Cool Video!' },
+        { id: 2, body: 'Cool Video Again!' }
+      ]
+    })
+
+    assertState(store, {
+      videos: {
+        uid1: { id: 'uid1', link: '/video.mp4' }
+      },
+      comments: {
+        1: {
+          id: 1,
+          commentableId: 'uid1',
+          commentableType: 'videos',
+          body: 'Cool Video!'
+        },
+        2: {
+          id: 2,
+          commentableId: 'uid1',
+          commentableType: 'videos',
+          body: 'Cool Video Again!'
+        }
+      }
+    })
+  })
+
+  it('inserts "morph many" relation with related having "uid" as the related key', () => {
+    class Comment extends Model {
+      static entity = 'comments'
+
+      @Uid() id!: number
+      @Str('') body!: string
+      @Attr(null) commentableId!: string | null
+      @Attr(null) commentableType!: string | null
+    }
+
+    class Video extends Model {
+      static entity = 'videos'
+
+      @Uid() id!: string
+      @Str('') link!: string
+
+      @MorphMany(() => Comment, 'commentableId', 'commentableType')
+      comments!: Comment[]
+    }
+
+    mockUid(['uid1', 'uid2', 'uid3'])
+
+    const store = createStore()
+
+    store.$repo(Video).save({
+      link: '/video.mp4',
+      comments: [{ body: 'Cool Video!' }, { body: 'Cool Video Again!' }]
+    })
+
+    assertState(store, {
+      videos: {
+        uid1: { id: 'uid1', link: '/video.mp4' }
+      },
+      comments: {
+        uid2: {
+          id: 'uid2',
+          commentableId: 'uid1',
+          commentableType: 'videos',
+          body: 'Cool Video!'
+        },
+        uid3: {
+          id: 'uid3',
+          commentableId: 'uid1',
+          commentableType: 'videos',
+          body: 'Cool Video Again!'
+        }
+      }
+    })
+  })
+})
diff --git a/test/unit/model/Model_Relations.spec.ts b/test/unit/model/Model_Relations.spec.ts
index 721bac8..0a16f51 100644
--- a/test/unit/model/Model_Relations.spec.ts
+++ b/test/unit/model/Model_Relations.spec.ts
@@ -6,7 +6,8 @@ import {
   BelongsTo,
   HasMany,
   HasManyBy,
-  MorphOne
+  MorphOne,
+  MorphMany
 } from '@/index'
 
 describe('unit/model/Model_Relations', () => {
@@ -31,6 +32,9 @@ describe('unit/model/Model_Relations', () => {
 
     @MorphOne(() => Image, 'imageableId', 'imageableType')
     image!: Image | null
+
+    @MorphMany(() => Comment, 'commentableId', 'commentableType')
+    comments!: Comment[]
   }
 
   class Phone extends Model {
@@ -67,6 +71,15 @@ describe('unit/model/Model_Relations', () => {
     @Attr() imageableType!: string
   }
 
+  class Comment extends Model {
+    static entity = 'comments'
+
+    @Attr() id!: number
+    @Attr() body!: string
+    @Attr() commentableId!: string | null
+    @Attr() commentableType!: string | null
+  }
+
   it('fills "has one" relation', () => {
     const store = createStore()
 
@@ -138,4 +151,21 @@ describe('unit/model/Model_Relations', () => {
     expect(user.image!).toBeInstanceOf(Image)
     expect(user.image!.id).toBe(2)
   })
+
+  it('fills "morph many" relation', () => {
+    const store = createStore()
+
+    const user = store.$repo(User).make({
+      id: 1,
+      comments: [
+        { id: 2, body: 'Hey User!' },
+        { id: 3, body: 'Hey User Again!' }
+      ]
+    })
+
+    expect(user.comments[0]).toBeInstanceOf(Comment)
+    expect(user.comments[1]).toBeInstanceOf(Comment)
+    expect(user.comments[0].id).toBe(2)
+    expect(user.comments[1].id).toBe(3)
+  })
 })

From 1bba4467b1389a50c91dc9e43fec039a0b40a41a Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Wed, 24 Nov 2021 14:58:39 -0800
Subject: [PATCH 03/21] Removing TODO from tested method in MorphMany

---
 src/model/attributes/relations/MorphMany.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/model/attributes/relations/MorphMany.ts b/src/model/attributes/relations/MorphMany.ts
index 0ef330c..0ef3fd8 100644
--- a/src/model/attributes/relations/MorphMany.ts
+++ b/src/model/attributes/relations/MorphMany.ts
@@ -38,7 +38,7 @@ export class MorphMany extends Relation {
   }
 
   /**
-   * Get all related models for the relationship. TODO
+   * Get all related models for the relationship.
    */
   getRelateds(): Model[] {
     return [this.related]

From e774cbedbd310d5db725a2e2381406084a35f87f Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Thu, 25 Nov 2021 10:53:32 -0800
Subject: [PATCH 04/21] Fixing a typo

---
 test/feature/relations/morph_many_retrieve.spec.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/feature/relations/morph_many_retrieve.spec.ts b/test/feature/relations/morph_many_retrieve.spec.ts
index 1629ff3..009c945 100644
--- a/test/feature/relations/morph_many_retrieve.spec.ts
+++ b/test/feature/relations/morph_many_retrieve.spec.ts
@@ -119,7 +119,7 @@ describe('feature/relations/morph_many_retrieve', () => {
     })
   })
 
-  describe('when there are no images', () => {
+  describe('when there are no comments', () => {
     const store = createStore()
 
     fillState(store, {

From 03160be7fdbba6f71a38060920e22521c83d6d98 Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Thu, 25 Nov 2021 11:02:30 -0800
Subject: [PATCH 05/21] Moving fill state into before all block

---
 .../relations/morph_many_retrieve.spec.ts      | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/test/feature/relations/morph_many_retrieve.spec.ts b/test/feature/relations/morph_many_retrieve.spec.ts
index 009c945..0875758 100644
--- a/test/feature/relations/morph_many_retrieve.spec.ts
+++ b/test/feature/relations/morph_many_retrieve.spec.ts
@@ -72,7 +72,9 @@ describe('feature/relations/morph_many_retrieve', () => {
   describe('when there are comments', () => {
     const store = createStore()
 
-    fillState(store, ENTITIES)
+    beforeAll(() => {
+      fillState(store, ENTITIES)
+    })
 
     it('can eager load morph many relation for video', () => {
       const video = store.$repo(Video).with('comments').first()!
@@ -122,12 +124,14 @@ describe('feature/relations/morph_many_retrieve', () => {
   describe('when there are no comments', () => {
     const store = createStore()
 
-    fillState(store, {
-      videos: {
-        1: { id: 1, link: '/video.mp4' }
-      },
-      posts: {},
-      comments: {}
+    beforeAll(() => {
+      fillState(store, {
+        videos: {
+          1: { id: 1, link: '/video.mp4' }
+        },
+        posts: {},
+        comments: {}
+      })
     })
 
     it('can eager load missing relation as empty array', () => {

From d6dd6c60af68995a5f456cea041f4633e14e9a43 Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Thu, 25 Nov 2021 11:03:40 -0800
Subject: [PATCH 06/21] Correcting a typo

---
 test/feature/relations/morph_many_retrieve.spec.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/feature/relations/morph_many_retrieve.spec.ts b/test/feature/relations/morph_many_retrieve.spec.ts
index 0875758..39e4450 100644
--- a/test/feature/relations/morph_many_retrieve.spec.ts
+++ b/test/feature/relations/morph_many_retrieve.spec.ts
@@ -101,7 +101,7 @@ describe('feature/relations/morph_many_retrieve', () => {
       })
     })
 
-    it('can eager load morph one relation for post', () => {
+    it('can eager load morph many relation for post', () => {
       const post = store.$repo(Post).with('comments').first()!
 
       expect(post).toBeInstanceOf(Post)

From 41aa1a88ab51fd66009f173a3851c62254718b68 Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Thu, 25 Nov 2021 11:07:03 -0800
Subject: [PATCH 07/21] Touching up some test descriptions

---
 test/feature/relations/morph_many_save.spec.ts     | 2 +-
 test/feature/relations/morph_many_save_uid.spec.ts | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/test/feature/relations/morph_many_save.spec.ts b/test/feature/relations/morph_many_save.spec.ts
index 212abe3..dde2643 100644
--- a/test/feature/relations/morph_many_save.spec.ts
+++ b/test/feature/relations/morph_many_save.spec.ts
@@ -76,7 +76,7 @@ describe('feature/relations/morph_many_save', () => {
     })
   })
 
-  it('generates missing foreign key', async () => {
+  it('generates missing relational key', async () => {
     const store = createStore()
 
     store.$repo(Video).save({
diff --git a/test/feature/relations/morph_many_save_uid.spec.ts b/test/feature/relations/morph_many_save_uid.spec.ts
index d951f61..70e318e 100644
--- a/test/feature/relations/morph_many_save_uid.spec.ts
+++ b/test/feature/relations/morph_many_save_uid.spec.ts
@@ -59,7 +59,7 @@ describe('feature/relations/morph_many_save_uid', () => {
     })
   })
 
-  it('inserts "morph many" relation with related having "uid" as the related key', () => {
+  it('inserts "morph many" relation with related having "uid" as the relational key', () => {
     class Comment extends Model {
       static entity = 'comments'
 

From cafc529967d166a5c26da9f77f08bb15289af6ab Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Mon, 29 Nov 2021 09:52:35 -0800
Subject: [PATCH 08/21] Addressing PR comments

---
 src/index.cjs.ts                                   | 4 ++++
 test/feature/relations/morph_many_retrieve.spec.ts | 5 ++---
 test/unit/model/Model_Relations.spec.ts            | 5 ++---
 3 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/src/index.cjs.ts b/src/index.cjs.ts
index 0abcf68..8f60e54 100644
--- a/src/index.cjs.ts
+++ b/src/index.cjs.ts
@@ -16,6 +16,7 @@ import { BelongsTo } from './model/decorators/attributes/relations/BelongsTo'
 import { HasMany } from './model/decorators/attributes/relations/HasMany'
 import { HasManyBy } from './model/decorators/attributes/relations/HasManyBy'
 import { MorphOne } from './model/decorators/attributes/relations/MorphOne'
+import { MorphMany } from './model/decorators/attributes/relations/MorphMany'
 import { Attribute } from './model/attributes/Attribute'
 import { Type } from './model/attributes/types/Type'
 import { Attr as AttrAttr } from './model/attributes/types/Attr'
@@ -29,6 +30,7 @@ import { BelongsTo as BelongsToAttr } from './model/attributes/relations/Belongs
 import { HasMany as HasManyAttr } from './model/attributes/relations/HasMany'
 import { HasManyBy as HasManyByAttr } from './model/attributes/relations/HasManyBy'
 import { MorphOne as MorphOneAttr } from './model/attributes/relations/MorphOne'
+import { MorphMany as MorphManyAttr } from './model/attributes/relations/MorphMany'
 import { Repository } from './repository/Repository'
 import { Interpreter } from './interpreter/Interpreter'
 import { Query } from './query/Query'
@@ -51,6 +53,7 @@ export default {
   HasMany,
   HasManyBy,
   MorphOne,
+  MorphMany,
   Attribute,
   Type,
   AttrAttr,
@@ -64,6 +67,7 @@ export default {
   HasManyAttr,
   HasManyByAttr,
   MorphOneAttr,
+  MorphManyAttr,
   Repository,
   Interpreter,
   Query,
diff --git a/test/feature/relations/morph_many_retrieve.spec.ts b/test/feature/relations/morph_many_retrieve.spec.ts
index 39e4450..663294e 100644
--- a/test/feature/relations/morph_many_retrieve.spec.ts
+++ b/test/feature/relations/morph_many_retrieve.spec.ts
@@ -176,9 +176,8 @@ describe('feature/relations/morph_many_retrieve', () => {
 
     const video = store.$repo(Video).revive(schema)!
 
-    expect(video.comments.length).toBe(2)
-    expect(video.comments[0]).toBeInstanceOf(Comment)
-    expect(video.comments[1]).toBeInstanceOf(Comment)
+    expect(video.comments).toHaveLength(2)
+    assertInstanceOf(video.comments, Comment)
     expect(video.comments[0].id).toBe(2)
     expect(video.comments[1].id).toBe(1)
   })
diff --git a/test/unit/model/Model_Relations.spec.ts b/test/unit/model/Model_Relations.spec.ts
index 0a16f51..3c10c04 100644
--- a/test/unit/model/Model_Relations.spec.ts
+++ b/test/unit/model/Model_Relations.spec.ts
@@ -1,4 +1,4 @@
-import { createStore } from 'test/Helpers'
+import { createStore, assertInstanceOf } from 'test/Helpers'
 import {
   Model,
   Attr,
@@ -163,8 +163,7 @@ describe('unit/model/Model_Relations', () => {
       ]
     })
 
-    expect(user.comments[0]).toBeInstanceOf(Comment)
-    expect(user.comments[1]).toBeInstanceOf(Comment)
+    assertInstanceOf(user.comments, Comment)
     expect(user.comments[0].id).toBe(2)
     expect(user.comments[1].id).toBe(3)
   })

From 7d7c50d1b10e75ce608c23669b69cf441d3b3318 Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Fri, 3 Dec 2021 08:13:30 -0800
Subject: [PATCH 09/21] Refactoring MorphMany match method to use query instead
 of results

---
 src/model/attributes/relations/MorphMany.ts | 4 ++--
 test/unit/model/Model_Relations.spec.ts     | 1 -
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/model/attributes/relations/MorphMany.ts b/src/model/attributes/relations/MorphMany.ts
index 0ef3fd8..882cdfe 100644
--- a/src/model/attributes/relations/MorphMany.ts
+++ b/src/model/attributes/relations/MorphMany.ts
@@ -70,8 +70,8 @@ export class MorphMany extends Relation {
   /**
    * Match the eagerly loaded results to their parents.
    */
-  match(relation: string, models: Collection, results: Collection): void {
-    const dictionary = this.buildDictionary(results)
+  match(relation: string, models: Collection, query: Query): void {
+    const dictionary = this.buildDictionary(query.get())
 
     models.forEach((model) => {
       const key = model[this.localKey]
diff --git a/test/unit/model/Model_Relations.spec.ts b/test/unit/model/Model_Relations.spec.ts
index 3a1a7d9..f539dcb 100644
--- a/test/unit/model/Model_Relations.spec.ts
+++ b/test/unit/model/Model_Relations.spec.ts
@@ -8,7 +8,6 @@ import {
   HasManyBy,
   MorphOne,
   MorphTo,
-  MorphOne,
   MorphMany
 } from '@/index'
 

From 6eb73665be6ebc4556e5589e78a7404af807a8ea Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Tue, 23 Nov 2021 15:53:32 -0800
Subject: [PATCH 10/21] Init MorphMany

---
 src/index.ts                                  |   4 +
 src/model/Model.ts                            |  17 ++
 src/model/attributes/relations/MorphMany.ts   | 102 +++++++++++
 .../attributes/relations/MorphMany.ts         |  20 +++
 .../relations/morph_many_retrieve.spec.ts     | 164 ++++++++++++++++++
 5 files changed, 307 insertions(+)
 create mode 100644 src/model/attributes/relations/MorphMany.ts
 create mode 100644 src/model/decorators/attributes/relations/MorphMany.ts
 create mode 100644 test/feature/relations/morph_many_retrieve.spec.ts

diff --git a/src/index.ts b/src/index.ts
index ca80412..4f2a69a 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -17,6 +17,7 @@ export * from './model/decorators/attributes/relations/HasMany'
 export * from './model/decorators/attributes/relations/HasManyBy'
 export * from './model/decorators/attributes/relations/MorphOne'
 export * from './model/decorators/attributes/relations/MorphTo'
+export * from './model/decorators/attributes/relations/MorphMany'
 export * from './model/decorators/Contracts'
 export * from './model/decorators/NonEnumerable'
 export * from './model/attributes/Attribute'
@@ -33,6 +34,7 @@ export { HasMany as HasManyAttr } from './model/attributes/relations/HasMany'
 export { HasManyBy as HasManyByAttr } from './model/attributes/relations/HasManyBy'
 export { MorphOne as MorphOneAttr } from './model/attributes/relations/MorphOne'
 export { MorphTo as MorphToAttr } from './model/attributes/relations/MorphTo'
+export { MorphMany as MorphManyAttr } from './model/attributes/relations/MorphMany'
 export * from './modules/RootModule'
 export * from './modules/RootState'
 export * from './modules/Module'
@@ -66,6 +68,7 @@ import { HasMany as HasManyAttr } from './model/attributes/relations/HasMany'
 import { HasManyBy as HasManyByAttr } from './model/attributes/relations/HasManyBy'
 import { MorphOne as MorphOneAttr } from './model/attributes/relations/MorphOne'
 import { MorphTo as MorphToAttr } from './model/attributes/relations/MorphTo'
+import { MorphMany as MorphManyAttr } from './model/attributes/relations/MorphMany'
 import { Repository } from './repository/Repository'
 import { Interpreter } from './interpreter/Interpreter'
 import { Query } from './query/Query'
@@ -92,6 +95,7 @@ export default {
   HasManyByAttr,
   MorphOneAttr,
   MorphToAttr,
+  MorphManyAttr,
   Repository,
   Interpreter,
   Query,
diff --git a/src/model/Model.ts b/src/model/Model.ts
index 87e31b2..f424cf1 100644
--- a/src/model/Model.ts
+++ b/src/model/Model.ts
@@ -13,6 +13,7 @@ import { HasMany } from './attributes/relations/HasMany'
 import { HasManyBy } from './attributes/relations/HasManyBy'
 import { MorphOne } from './attributes/relations/MorphOne'
 import { MorphTo } from './attributes/relations/MorphTo'
+import { MorphMany } from './attributes/relations/MorphMany'
 
 export type ModelFields = Record<string, Attribute>
 export type ModelSchemas = Record<string, ModelFields>
@@ -263,6 +264,22 @@ export class Model {
     return new MorphTo(instance, relatedModels, id, type, ownerKey)
   }
 
+  /*
+   * Create a new MorphMany relation instance.
+   */
+  static morphMany(
+    related: typeof Model,
+    id: string,
+    type: string,
+    localKey?: string
+  ): MorphMany {
+    const model = this.newRawInstance()
+
+    localKey = localKey ?? model.$getLocalKey()
+
+    return new MorphMany(model, related.newRawInstance(), id, type, localKey)
+  }
+
   /**
    * Get the constructor for this model.
    */
diff --git a/src/model/attributes/relations/MorphMany.ts b/src/model/attributes/relations/MorphMany.ts
new file mode 100644
index 0000000..1c04beb
--- /dev/null
+++ b/src/model/attributes/relations/MorphMany.ts
@@ -0,0 +1,102 @@
+import { Schema as NormalizrSchema } from 'normalizr'
+import { Schema } from '../../../schema/Schema'
+import { Element, Collection } from '../../../data/Data'
+import { Query } from '../../../query/Query'
+import { Model } from '../../Model'
+import { Relation, Dictionary } from './Relation'
+
+export class MorphMany extends Relation {
+  /**
+   * The field name that contains id of the parent model.
+   */
+  protected morphId: string
+
+  /**
+   * The field name that contains type of the parent model.
+   */
+  protected morphType: string
+
+  /**
+   * The local key of the model.
+   */
+  protected localKey: string
+
+  /**
+   * Create a new morph-many relation instance.
+   */
+  constructor(
+    parent: Model,
+    related: Model,
+    morphId: string,
+    morphType: string,
+    localKey: string
+  ) {
+    super(parent, related)
+    this.morphId = morphId
+    this.morphType = morphType
+    this.localKey = localKey
+  }
+
+  /**
+   * Get all related models for the relationship. TODO
+   */
+  getRelateds(): Model[] {
+    return [this.related]
+  }
+
+  /**
+   * Define the normalizr schema for the relation. TODO
+   */
+  define(schema: Schema): NormalizrSchema {
+    return schema.many(this.related, this.parent)
+  }
+
+  /**
+   * Attach the parent type and id to the given relation. TODO
+   */
+  attach(record: Element, child: Element): void {
+    child[this.morphId] = record[this.localKey]
+    child[this.morphType] = this.parent.$entity()
+  }
+
+  /**
+   * Set the constraints for an eager load of the relation. TODO
+   */
+  addEagerConstraints(query: Query, models: Collection): void {
+    query.where(this.morphType, this.parent.$entity())
+    query.whereIn(this.morphId, this.getKeys(models, this.localKey))
+  }
+
+  /**
+   * Match the eagerly loaded results to their parents.
+   */
+  match(relation: string, models: Collection, results: Collection): void {
+    const dictionary = this.buildDictionary(results)
+
+    models.forEach((model) => {
+      const key = model[this.localKey]
+
+      dictionary[key]
+        ? model.$setRelation(relation, dictionary[key])
+        : model.$setRelation(relation, [])
+    })
+  }
+
+  /**
+   * Build model dictionary keyed by the relation's foreign key.
+   */
+  protected buildDictionary(results: Collection): Dictionary {
+    return this.mapToDictionary(results, (result) => {
+      return [result[this.morphId], result]
+    })
+  }
+
+  /**
+   * Make related models. TODO
+   */
+  make(elements?: Element[]): Model[] {
+    return elements
+      ? elements.map((element) => this.related.$newInstance(element))
+      : []
+  }
+}
diff --git a/src/model/decorators/attributes/relations/MorphMany.ts b/src/model/decorators/attributes/relations/MorphMany.ts
new file mode 100644
index 0000000..fabf01a
--- /dev/null
+++ b/src/model/decorators/attributes/relations/MorphMany.ts
@@ -0,0 +1,20 @@
+import { Model } from '../../../Model'
+import { PropertyDecorator } from '../../Contracts'
+
+/**
+ * Create a morph-many attribute property decorator.
+ */
+export function MorphMany(
+  related: () => typeof Model,
+  id: string,
+  type: string,
+  localKey?: string
+): PropertyDecorator {
+  return (target, propertyKey) => {
+    const self = target.$self()
+
+    self.setRegistry(propertyKey, () =>
+      self.morphMany(related(), id, type, localKey)
+    )
+  }
+}
diff --git a/test/feature/relations/morph_many_retrieve.spec.ts b/test/feature/relations/morph_many_retrieve.spec.ts
new file mode 100644
index 0000000..0c76afe
--- /dev/null
+++ b/test/feature/relations/morph_many_retrieve.spec.ts
@@ -0,0 +1,164 @@
+import { createStore, fillState, assertModel, assertInstanceOf } from 'test/Helpers'
+import { Model, Str, Num, MorphMany } from '@/index'
+
+describe('feature/relations/morph_many_retrieve', () => {
+  class Comment extends Model {
+    static entity = 'comments'
+
+    @Num(0) id!: number
+    @Str('') body!: string
+    @Num(0) commentableId!: number
+    @Str('') commentableType!: string
+  }
+
+  class Video extends Model {
+    static entity = 'videos'
+
+    @Num(0) id!: number
+    @Str('') link!: string
+
+    @MorphMany(() => Comment, 'commentableId', 'commentableType')
+    comments!: Comment[]
+  }
+
+  class Post extends Model {
+    static entity = 'posts'
+
+    @Num(0) id!: number
+    @Str('') title!: string
+    @MorphMany(() => Comment, 'commentableId', 'commentableType')
+    comments!: Comment[]
+  }
+
+  const ENTITIES = {
+    videos: { 1: { id: 1, link: '/video.mp4' } },
+    posts: {
+      1: { id: 1, title: 'Hello, world!' },
+      2: { id: 2, title: 'Hello, world! Again!' }
+    },
+    comments: {
+      1: {
+        id: 1,
+        body: 'Cool Video!',
+        commentableId: 1,
+        commentableType: 'videos'
+      },
+      2: {
+        id: 2,
+        body: 'Cool Video Again!',
+        commentableId: 1,
+        commentableType: 'videos'
+      },
+      3: {
+        id: 3,
+        body: 'Cool Post!',
+        commentableId: 1,
+        commentableType: 'posts'
+      },
+      4: {
+        id: 4,
+        body: 'Cool Post 2!',
+        commentableId: 2,
+        commentableType: 'posts'
+      }
+    }
+  }
+
+  describe('when there are comments', () => {
+    const store = createStore()
+
+    fillState(store, ENTITIES)
+
+    it('can eager load morph many relation for video', () => {
+      const video = store.$repo(Video).with('comments').first()!
+
+      expect(video).toBeInstanceOf(Video)
+      assertInstanceOf(video.comments, Comment)
+      assertModel(video, {
+        id: 1,
+        link: '/video.mp4',
+        comments: [
+          {
+            id: 1,
+            body: 'Cool Video!',
+            commentableId: 1,
+            commentableType: 'videos'
+          },
+          {
+            id: 2,
+            body: 'Cool Video Again!',
+            commentableId: 1,
+            commentableType: 'videos'
+          }
+        ]
+      })
+    })
+
+    it('can eager load morph one relation for post', () => {
+      const post = store.$repo(Post).with('comments').first()!
+
+      expect(post).toBeInstanceOf(Post)
+      assertInstanceOf(post.comments, Comment)
+      assertModel(post, {
+        id: 1,
+        title: 'Hello, world!',
+        comments: [{
+          id: 3,
+          body: 'Cool Post!',
+          commentableId: 1,
+          commentableType: 'posts'
+        }]
+      })
+    })
+  })
+
+  describe('when there are no images', () => {
+    const store = createStore()
+
+    fillState(store, {
+      videos: {
+        1: { id: 1, link: '/video.mp4' }
+      },
+      posts: {},
+      comments: {}
+    })
+
+    it('can eager load missing relation as empty array', () => {
+      const video = store.$repo(Video).with('comments').first()!
+
+      expect(video).toBeInstanceOf(Video)
+      assertModel(video, {
+        id: 1,
+        link: '/video.mp4',
+        comments: []
+      })
+    })
+  })
+
+  it('can revive "has many" relations', () => {
+    const store = createStore()
+
+    fillState(store, {
+      videos: {
+        1: { id: 1, link: '/video.mp4' }
+      },
+      comments: {
+        1: { id: 1, commentableId: 1, commentableType: 'videos', body: 'Cool Video!' },
+        2: { id: 2, commentableId: 1, commentableType: 'videos', body: 'Cool Video Again!' }
+      }
+    })
+
+    const schema = {
+      id: '1',
+      comments: [{ id: 2 }, { id: 1 }]
+    }
+
+    const video = store.$repo(Video).revive(schema)!
+
+    expect(video.comments.length).toBe(2)
+    expect(video.comments[0]).toBeInstanceOf(Comment)
+    expect(video.comments[1]).toBeInstanceOf(Comment)
+    expect(video.comments[0].id).toBe(2)
+    expect(video.comments[1].id).toBe(1)
+  })
+})

From f3b449db8708b9408b0e744735866ae5b4bbfef1 Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Wed, 24 Nov 2021 14:57:30 -0800
Subject: [PATCH 11/21] Adding MorphMany tests, removing TODOs from tested
 MorphMany methods.

---
 src/model/attributes/relations/MorphMany.ts   |   8 +-
 .../relations/morph_many_retrieve.spec.ts     |  43 ++++--
 .../feature/relations/morph_many_save.spec.ts | 127 ++++++++++++++++++
 .../morph_many_save_custom_key.spec.ts        | 121 +++++++++++++++++
 .../relations/morph_many_save_uid.spec.ts     | 111 +++++++++++++++
 test/unit/model/Model_Relations.spec.ts       |  32 ++++-
 6 files changed, 424 insertions(+), 18 deletions(-)
 create mode 100644 test/feature/relations/morph_many_save.spec.ts
 create mode 100644 test/feature/relations/morph_many_save_custom_key.spec.ts
 create mode 100644 test/feature/relations/morph_many_save_uid.spec.ts

diff --git a/src/model/attributes/relations/MorphMany.ts b/src/model/attributes/relations/MorphMany.ts
index 1c04beb..0ef330c 100644
--- a/src/model/attributes/relations/MorphMany.ts
+++ b/src/model/attributes/relations/MorphMany.ts
@@ -45,14 +45,14 @@ export class MorphMany extends Relation {
   }
 
   /**
-   * Define the normalizr schema for the relation. TODO
+   * Define the normalizr schema for the relation.
    */
   define(schema: Schema): NormalizrSchema {
     return schema.many(this.related, this.parent)
   }
 
   /**
-   * Attach the parent type and id to the given relation. TODO
+   * Attach the parent type and id to the given relation.
    */
   attach(record: Element, child: Element): void {
     child[this.morphId] = record[this.localKey]
@@ -60,7 +60,7 @@ export class MorphMany extends Relation {
   }
 
   /**
-   * Set the constraints for an eager load of the relation. TODO
+   * Set the constraints for an eager load of the relation.
    */
   addEagerConstraints(query: Query, models: Collection): void {
     query.where(this.morphType, this.parent.$entity())
@@ -92,7 +92,7 @@ export class MorphMany extends Relation {
   }
 
   /**
-   * Make related models. TODO
+   * Make related models.
    */
   make(elements?: Element[]): Model[] {
     return elements
diff --git a/test/feature/relations/morph_many_retrieve.spec.ts b/test/feature/relations/morph_many_retrieve.spec.ts
index 0c76afe..1629ff3 100644
--- a/test/feature/relations/morph_many_retrieve.spec.ts
+++ b/test/feature/relations/morph_many_retrieve.spec.ts
@@ -1,5 +1,10 @@
-import { createStore, fillState, assertModel, assertInstanceOf } from 'test/Helpers'
-import { Model, Str, Num, MorphMany } from '@/index'
+import {
+  createStore,
+  fillState,
+  assertModel,
+  assertInstanceOf
+} from 'test/Helpers'
+import { Model, Attr, Str, Num, MorphMany } from '@/index'
 
 describe('feature/relations/morph_many_retrieve', () => {
   class Comment extends Model {
@@ -7,8 +12,8 @@ describe('feature/relations/morph_many_retrieve', () => {
 
     @Num(0) id!: number
     @Str('') body!: string
-    @Num(0) commentableId!: number
-    @Str('') commentableType!: string
+    @Attr(null) commentableId!: number | null
+    @Attr(null) commentableType!: string | null
   }
 
   class Video extends Model {
@@ -102,12 +107,14 @@ describe('feature/relations/morph_many_retrieve', () => {
       assertModel(post, {
         id: 1,
         title: 'Hello, world!',
-        comments: [{
-          id: 3,
-          body: 'Cool Post!',
-          commentableId: 1,
-          commentableType: 'posts'
-        }]
+        comments: [
+          {
+            id: 3,
+            body: 'Cool Post!',
+            commentableId: 1,
+            commentableType: 'posts'
+          }
+        ]
       })
     })
   })
@@ -135,7 +142,7 @@ describe('feature/relations/morph_many_retrieve', () => {
     })
   })
 
-  it('can revive "has many" relations', () => {
+  it('can revive "morph many" relations', () => {
     const store = createStore()
 
     fillState(store, {
@@ -143,8 +150,18 @@ describe('feature/relations/morph_many_retrieve', () => {
         1: { id: 1, link: '/video.mp4' }
       },
       comments: {
-        1: { id: 1, commentableId: 1, commentableType: 'videos', body: 'Cool Video!' },
-        2: { id: 2, commentableId: 1, commentableType: 'videos', body: 'Cool Video Again!' }
+        1: {
+          id: 1,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video!'
+        },
+        2: {
+          id: 2,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video Again!'
+        }
       }
     })
 
diff --git a/test/feature/relations/morph_many_save.spec.ts b/test/feature/relations/morph_many_save.spec.ts
new file mode 100644
index 0000000..212abe3
--- /dev/null
+++ b/test/feature/relations/morph_many_save.spec.ts
@@ -0,0 +1,127 @@
+import { createStore, fillState, assertState } from 'test/Helpers'
+import { Model, Attr, Num, Str, MorphMany } from '@/index'
+
+describe('feature/relations/morph_many_save', () => {
+  class Comment extends Model {
+    static entity = 'comments'
+
+    @Num(0) id!: number
+    @Str('') body!: string
+    @Attr(null) commentableId!: number | null
+    @Attr(null) commentableType!: string | null
+  }
+
+  class Video extends Model {
+    static entity = 'videos'
+
+    @Num(0) id!: number
+    @Str('') link!: string
+
+    @MorphMany(() => Comment, 'commentableId', 'commentableType')
+    comments!: Comment[]
+  }
+
+  it('saves a model to the store with "morph many" relation', () => {
+    const store = createStore()
+
+    fillState(store, {
+      videos: {},
+      comments: {
+        1: {
+          id: 1,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Some Comment'
+        }
+      }
+    })
+
+    store.$repo(Video).save({
+      id: 1,
+      link: '/video.mp4',
+      comments: [
+        {
+          id: 1,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video!'
+        },
+        {
+          id: 2,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video Again!'
+        }
+      ]
+    })
+
+    assertState(store, {
+      videos: {
+        1: { id: 1, link: '/video.mp4' }
+      },
+      comments: {
+        1: {
+          id: 1,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video!'
+        },
+        2: {
+          id: 2,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video Again!'
+        }
+      }
+    })
+  })
+
+  it('generates missing foreign key', async () => {
+    const store = createStore()
+
+    store.$repo(Video).save({
+      id: 1,
+      link: '/video.mp4',
+      comments: [
+        { id: 1, body: 'Cool Video!' },
+        { id: 2, body: 'Cool Video Again!' }
+      ]
+    })
+
+    assertState(store, {
+      videos: {
+        1: { id: 1, link: '/video.mp4' }
+      },
+      comments: {
+        1: {
+          id: 1,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video!'
+        },
+        2: {
+          id: 2,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video Again!'
+        }
+      }
+    })
+  })
+
+  it('can insert a record with missing related data', async () => {
+    const store = createStore()
+
+    store.$repo(Video).save({
+      id: 1,
+      link: '/video.mp4'
+    })
+
+    assertState(store, {
+      videos: {
+        1: { id: 1, link: '/video.mp4' }
+      },
+      comments: {}
+    })
+  })
+})
diff --git a/test/feature/relations/morph_many_save_custom_key.spec.ts b/test/feature/relations/morph_many_save_custom_key.spec.ts
new file mode 100644
index 0000000..5bc16fa
--- /dev/null
+++ b/test/feature/relations/morph_many_save_custom_key.spec.ts
@@ -0,0 +1,121 @@
+import { createStore, assertState } from 'test/Helpers'
+import { Model, Attr, Num, Str, MorphMany } from '@/index'
+
+describe('feature/relations/morph_many_save_custom_key', () => {
+  beforeEach(() => {
+    Model.clearRegistries()
+  })
+
+  it('inserts "morph many" relation with custom primary key', () => {
+    class Comment extends Model {
+      static entity = 'comments'
+
+      @Num(0) id!: number
+      @Str('') body!: string
+      @Attr(null) commentableId!: number | null
+      @Attr(null) commentableType!: string | null
+    }
+
+    class Video extends Model {
+      static entity = 'videos'
+
+      static primaryKey = 'morphableId'
+
+      @Num(0) morphableId!: number
+      @Str('') link!: string
+
+      @MorphMany(() => Comment, 'commentableId', 'commentableType')
+      comments!: Comment[]
+    }
+
+    const store = createStore()
+
+    store.$repo(Video).save({
+      morphableId: 1,
+      link: '/video.mp4',
+      comments: [
+        { id: 1, body: 'Cool Video!' },
+        { id: 2, body: 'Cool Video Again!' }
+      ]
+    })
+
+    assertState(store, {
+      videos: {
+        1: { morphableId: 1, link: '/video.mp4' }
+      },
+      comments: {
+        1: {
+          id: 1,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video!'
+        },
+        2: {
+          id: 2,
+          commentableId: 1,
+          commentableType: 'videos',
+          body: 'Cool Video Again!'
+        }
+      }
+    })
+  })
+
+  it('inserts "morph many" relation with custom local key', () => {
+    class Comment extends Model {
+      static entity = 'comments'
+
+      @Num(0) id!: number
+      @Str('') body!: string
+      @Attr(null) commentableId!: number | null
+      @Attr(null) commentableType!: string | null
+    }
+
+    class Video extends Model {
+      static entity = 'videos'
+
+      @Num(0) id!: number
+      @Num(0) morphableId!: number
+      @Str('') link!: string
+
+      @MorphMany(
+        () => Comment,
+        'commentableId',
+        'commentableType',
+        'morphableId'
+      )
+      comments!: Comment[]
+    }
+
+    const store = createStore()
+
+    store.$repo(Video).save({
+      id: 1,
+      morphableId: 2,
+      link: '/video.mp4',
+      comments: [
+        { id: 1, body: 'Cool Video!' },
+        { id: 2, body: 'Cool Video Again!' }
+      ]
+    })
+
+    assertState(store, {
+      videos: {
+        1: { id: 1, morphableId: 2, link: '/video.mp4' }
+      },
+      comments: {
+        1: {
+          id: 1,
+          commentableId: 2,
+          commentableType: 'videos',
+          body: 'Cool Video!'
+        },
+        2: {
+          id: 2,
+          commentableId: 2,
+          commentableType: 'videos',
+          body: 'Cool Video Again!'
+        }
+      }
+    })
+  })
+})
diff --git a/test/feature/relations/morph_many_save_uid.spec.ts b/test/feature/relations/morph_many_save_uid.spec.ts
new file mode 100644
index 0000000..d951f61
--- /dev/null
+++ b/test/feature/relations/morph_many_save_uid.spec.ts
@@ -0,0 +1,111 @@
+import { createStore, assertState, mockUid } from 'test/Helpers'
+import { Model, Attr, Uid, Str, Num, MorphMany } from '@/index'
+
+describe('feature/relations/morph_many_save_uid', () => {
+  beforeEach(() => {
+    Model.clearRegistries()
+  })
+
+  it('inserts "morph many" relation with parent having "uid" field as the primary key', () => {
+    class Comment extends Model {
+      static entity = 'comments'
+
+      @Num(0) id!: number
+      @Str('') body!: string
+      @Attr(null) commentableId!: string | null
+      @Attr(null) commentableType!: string | null
+    }
+
+    class Video extends Model {
+      static entity = 'videos'
+
+      @Uid() id!: string
+      @Str('') link!: string
+
+      @MorphMany(() => Comment, 'commentableId', 'commentableType')
+      comments!: Comment[]
+    }
+
+    mockUid(['uid1'])
+
+    const store = createStore()
+
+    store.$repo(Video).save({
+      link: '/video.mp4',
+      comments: [
+        { id: 1, body: 'Cool Video!' },
+        { id: 2, body: 'Cool Video Again!' }
+      ]
+    })
+
+    assertState(store, {
+      videos: {
+        uid1: { id: 'uid1', link: '/video.mp4' }
+      },
+      comments: {
+        1: {
+          id: 1,
+          commentableId: 'uid1',
+          commentableType: 'videos',
+          body: 'Cool Video!'
+        },
+        2: {
+          id: 2,
+          commentableId: 'uid1',
+          commentableType: 'videos',
+          body: 'Cool Video Again!'
+        }
+      }
+    })
+  })
+
+  it('inserts "morph many" relation with related having "uid" as the related key', () => {
+    class Comment extends Model {
+      static entity = 'comments'
+
+      @Uid() id!: number
+      @Str('') body!: string
+      @Attr(null) commentableId!: string | null
+      @Attr(null) commentableType!: string | null
+    }
+
+    class Video extends Model {
+      static entity = 'videos'
+
+      @Uid() id!: string
+      @Str('') link!: string
+
+      @MorphMany(() => Comment, 'commentableId', 'commentableType')
+      comments!: Comment[]
+    }
+
+    mockUid(['uid1', 'uid2', 'uid3'])
+
+    const store = createStore()
+
+    store.$repo(Video).save({
+      link: '/video.mp4',
+      comments: [{ body: 'Cool Video!' }, { body: 'Cool Video Again!' }]
+    })
+
+    assertState(store, {
+      videos: {
+        uid1: { id: 'uid1', link: '/video.mp4' }
+      },
+      comments: {
+        uid2: {
+          id: 'uid2',
+          commentableId: 'uid1',
+          commentableType: 'videos',
+          body: 'Cool Video!'
+        },
+        uid3: {
+          id: 'uid3',
+          commentableId: 'uid1',
+          commentableType: 'videos',
+          body: 'Cool Video Again!'
+        }
+      }
+    })
+  })
+})
diff --git a/test/unit/model/Model_Relations.spec.ts b/test/unit/model/Model_Relations.spec.ts
index f10bceb..2498ff7 100644
--- a/test/unit/model/Model_Relations.spec.ts
+++ b/test/unit/model/Model_Relations.spec.ts
@@ -6,8 +6,9 @@ import {
   BelongsTo,
   HasMany,
   HasManyBy,
+  MorphOne,
   MorphTo,
-  MorphOne
+  MorphMany
 } from '@/index'
 
 describe('unit/model/Model_Relations', () => {
@@ -32,6 +33,9 @@ describe('unit/model/Model_Relations', () => {
 
     @MorphOne(() => Image, 'imageableId', 'imageableType')
     image!: Image | null
+
+    @MorphMany(() => Comment, 'commentableId', 'commentableType')
+    comments!: Comment[]
   }
 
   class Phone extends Model {
@@ -71,6 +75,15 @@ describe('unit/model/Model_Relations', () => {
     imageable!: User | null
   }
 
+  class Comment extends Model {
+    static entity = 'comments'
+
+    @Attr() id!: number
+    @Attr() body!: string
+    @Attr() commentableId!: string | null
+    @Attr() commentableType!: string | null
+  }
+
   it('fills "has one" relation', () => {
     const store = createStore()
 
@@ -158,4 +171,21 @@ describe('unit/model/Model_Relations', () => {
     expect(image.imageable!).toBeInstanceOf(User)
     expect(image.imageable!.id).toBe(2)
   })
+
+  it('fills "morph many" relation', () => {
+    const store = createStore()
+
+    const user = store.$repo(User).make({
+      id: 1,
+      comments: [
+        { id: 2, body: 'Hey User!' },
+        { id: 3, body: 'Hey User Again!' }
+      ]
+    })
+
+    expect(user.comments[0]).toBeInstanceOf(Comment)
+    expect(user.comments[1]).toBeInstanceOf(Comment)
+    expect(user.comments[0].id).toBe(2)
+    expect(user.comments[1].id).toBe(3)
+  })
 })

From f13c298e838f272bd693c41b148538b218e5b402 Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Wed, 24 Nov 2021 14:58:39 -0800
Subject: [PATCH 12/21] Removing TODO from tested method in MorphMany

---
 src/model/attributes/relations/MorphMany.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/model/attributes/relations/MorphMany.ts b/src/model/attributes/relations/MorphMany.ts
index 0ef330c..0ef3fd8 100644
--- a/src/model/attributes/relations/MorphMany.ts
+++ b/src/model/attributes/relations/MorphMany.ts
@@ -38,7 +38,7 @@ export class MorphMany extends Relation {
   }
 
   /**
-   * Get all related models for the relationship. TODO
+   * Get all related models for the relationship.
    */
   getRelateds(): Model[] {
     return [this.related]

From 3defb889dc44c41129ee9f442711f136a44c3092 Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Thu, 25 Nov 2021 10:53:32 -0800
Subject: [PATCH 13/21] Fixing a typo

---
 test/feature/relations/morph_many_retrieve.spec.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/feature/relations/morph_many_retrieve.spec.ts b/test/feature/relations/morph_many_retrieve.spec.ts
index 1629ff3..009c945 100644
--- a/test/feature/relations/morph_many_retrieve.spec.ts
+++ b/test/feature/relations/morph_many_retrieve.spec.ts
@@ -119,7 +119,7 @@ describe('feature/relations/morph_many_retrieve', () => {
     })
   })
 
-  describe('when there are no images', () => {
+  describe('when there are no comments', () => {
     const store = createStore()
 
     fillState(store, {

From b83e961de893777acbcbe0e77639a93cc61d7329 Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Thu, 25 Nov 2021 11:02:30 -0800
Subject: [PATCH 14/21] Moving fill state into before all block

---
 .../relations/morph_many_retrieve.spec.ts      | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/test/feature/relations/morph_many_retrieve.spec.ts b/test/feature/relations/morph_many_retrieve.spec.ts
index 009c945..0875758 100644
--- a/test/feature/relations/morph_many_retrieve.spec.ts
+++ b/test/feature/relations/morph_many_retrieve.spec.ts
@@ -72,7 +72,9 @@ describe('feature/relations/morph_many_retrieve', () => {
   describe('when there are comments', () => {
     const store = createStore()
 
-    fillState(store, ENTITIES)
+    beforeAll(() => {
+      fillState(store, ENTITIES)
+    })
 
     it('can eager load morph many relation for video', () => {
       const video = store.$repo(Video).with('comments').first()!
@@ -122,12 +124,14 @@ describe('feature/relations/morph_many_retrieve', () => {
   describe('when there are no comments', () => {
     const store = createStore()
 
-    fillState(store, {
-      videos: {
-        1: { id: 1, link: '/video.mp4' }
-      },
-      posts: {},
-      comments: {}
+    beforeAll(() => {
+      fillState(store, {
+        videos: {
+          1: { id: 1, link: '/video.mp4' }
+        },
+        posts: {},
+        comments: {}
+      })
     })
 
     it('can eager load missing relation as empty array', () => {

From de213c4b2e9773a0ab698b5461cde0cfc5d563dd Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Thu, 25 Nov 2021 11:03:40 -0800
Subject: [PATCH 15/21] Correcting a typo

---
 test/feature/relations/morph_many_retrieve.spec.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/feature/relations/morph_many_retrieve.spec.ts b/test/feature/relations/morph_many_retrieve.spec.ts
index 0875758..39e4450 100644
--- a/test/feature/relations/morph_many_retrieve.spec.ts
+++ b/test/feature/relations/morph_many_retrieve.spec.ts
@@ -101,7 +101,7 @@ describe('feature/relations/morph_many_retrieve', () => {
       })
     })
 
-    it('can eager load morph one relation for post', () => {
+    it('can eager load morph many relation for post', () => {
       const post = store.$repo(Post).with('comments').first()!
 
       expect(post).toBeInstanceOf(Post)

From ae8453ec42b75ed456ed49ac2f25411224a142c2 Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Thu, 25 Nov 2021 11:07:03 -0800
Subject: [PATCH 16/21] Touching up some test descriptions

---
 test/feature/relations/morph_many_save.spec.ts     | 2 +-
 test/feature/relations/morph_many_save_uid.spec.ts | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/test/feature/relations/morph_many_save.spec.ts b/test/feature/relations/morph_many_save.spec.ts
index 212abe3..dde2643 100644
--- a/test/feature/relations/morph_many_save.spec.ts
+++ b/test/feature/relations/morph_many_save.spec.ts
@@ -76,7 +76,7 @@ describe('feature/relations/morph_many_save', () => {
     })
   })
 
-  it('generates missing foreign key', async () => {
+  it('generates missing relational key', async () => {
     const store = createStore()
 
     store.$repo(Video).save({
diff --git a/test/feature/relations/morph_many_save_uid.spec.ts b/test/feature/relations/morph_many_save_uid.spec.ts
index d951f61..70e318e 100644
--- a/test/feature/relations/morph_many_save_uid.spec.ts
+++ b/test/feature/relations/morph_many_save_uid.spec.ts
@@ -59,7 +59,7 @@ describe('feature/relations/morph_many_save_uid', () => {
     })
   })
 
-  it('inserts "morph many" relation with related having "uid" as the related key', () => {
+  it('inserts "morph many" relation with related having "uid" as the relational key', () => {
     class Comment extends Model {
       static entity = 'comments'
 

From ea25ea6bc41d495c9aabd4c8438c8cedf7008fd1 Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Mon, 29 Nov 2021 09:52:35 -0800
Subject: [PATCH 17/21] Addressing PR comments

---
 src/index.cjs.ts                                   | 4 ++++
 test/feature/relations/morph_many_retrieve.spec.ts | 5 ++---
 test/unit/model/Model_Relations.spec.ts            | 5 ++---
 3 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/src/index.cjs.ts b/src/index.cjs.ts
index 0abcf68..8f60e54 100644
--- a/src/index.cjs.ts
+++ b/src/index.cjs.ts
@@ -16,6 +16,7 @@ import { BelongsTo } from './model/decorators/attributes/relations/BelongsTo'
 import { HasMany } from './model/decorators/attributes/relations/HasMany'
 import { HasManyBy } from './model/decorators/attributes/relations/HasManyBy'
 import { MorphOne } from './model/decorators/attributes/relations/MorphOne'
+import { MorphMany } from './model/decorators/attributes/relations/MorphMany'
 import { Attribute } from './model/attributes/Attribute'
 import { Type } from './model/attributes/types/Type'
 import { Attr as AttrAttr } from './model/attributes/types/Attr'
@@ -29,6 +30,7 @@ import { BelongsTo as BelongsToAttr } from './model/attributes/relations/Belongs
 import { HasMany as HasManyAttr } from './model/attributes/relations/HasMany'
 import { HasManyBy as HasManyByAttr } from './model/attributes/relations/HasManyBy'
 import { MorphOne as MorphOneAttr } from './model/attributes/relations/MorphOne'
+import { MorphMany as MorphManyAttr } from './model/attributes/relations/MorphMany'
 import { Repository } from './repository/Repository'
 import { Interpreter } from './interpreter/Interpreter'
 import { Query } from './query/Query'
@@ -51,6 +53,7 @@ export default {
   HasMany,
   HasManyBy,
   MorphOne,
+  MorphMany,
   Attribute,
   Type,
   AttrAttr,
@@ -64,6 +67,7 @@ export default {
   HasManyAttr,
   HasManyByAttr,
   MorphOneAttr,
+  MorphManyAttr,
   Repository,
   Interpreter,
   Query,
diff --git a/test/feature/relations/morph_many_retrieve.spec.ts b/test/feature/relations/morph_many_retrieve.spec.ts
index 39e4450..663294e 100644
--- a/test/feature/relations/morph_many_retrieve.spec.ts
+++ b/test/feature/relations/morph_many_retrieve.spec.ts
@@ -176,9 +176,8 @@ describe('feature/relations/morph_many_retrieve', () => {
 
     const video = store.$repo(Video).revive(schema)!
 
-    expect(video.comments.length).toBe(2)
-    expect(video.comments[0]).toBeInstanceOf(Comment)
-    expect(video.comments[1]).toBeInstanceOf(Comment)
+    expect(video.comments).toHaveLength(2)
+    assertInstanceOf(video.comments, Comment)
     expect(video.comments[0].id).toBe(2)
     expect(video.comments[1].id).toBe(1)
   })
diff --git a/test/unit/model/Model_Relations.spec.ts b/test/unit/model/Model_Relations.spec.ts
index 2498ff7..f539dcb 100644
--- a/test/unit/model/Model_Relations.spec.ts
+++ b/test/unit/model/Model_Relations.spec.ts
@@ -1,4 +1,4 @@
-import { createStore } from 'test/Helpers'
+import { createStore, assertInstanceOf } from 'test/Helpers'
 import {
   Model,
   Attr,
@@ -183,8 +183,7 @@ describe('unit/model/Model_Relations', () => {
       ]
     })
 
-    expect(user.comments[0]).toBeInstanceOf(Comment)
-    expect(user.comments[1]).toBeInstanceOf(Comment)
+    assertInstanceOf(user.comments, Comment)
     expect(user.comments[0].id).toBe(2)
     expect(user.comments[1].id).toBe(3)
   })

From 8afbfd8e09f283ba76d3f1dba0b986d11e68e588 Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Fri, 3 Dec 2021 08:13:30 -0800
Subject: [PATCH 18/21] Refactoring MorphMany match method to use query instead
 of results

---
 src/model/attributes/relations/MorphMany.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/model/attributes/relations/MorphMany.ts b/src/model/attributes/relations/MorphMany.ts
index 0ef3fd8..882cdfe 100644
--- a/src/model/attributes/relations/MorphMany.ts
+++ b/src/model/attributes/relations/MorphMany.ts
@@ -70,8 +70,8 @@ export class MorphMany extends Relation {
   /**
    * Match the eagerly loaded results to their parents.
    */
-  match(relation: string, models: Collection, results: Collection): void {
-    const dictionary = this.buildDictionary(results)
+  match(relation: string, models: Collection, query: Query): void {
+    const dictionary = this.buildDictionary(query.get())
 
     models.forEach((model) => {
       const key = model[this.localKey]

From ad6571001323af2d08173c350e96d1e8afdf5dba Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Fri, 3 Dec 2021 08:21:02 -0800
Subject: [PATCH 19/21] Resolving some duplicate code after resolving conflicts

---
 src/index.ts       |  3 ---
 src/model/Model.ts | 17 -----------------
 2 files changed, 20 deletions(-)

diff --git a/src/index.ts b/src/index.ts
index 1fea0f0..d545c66 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -34,7 +34,6 @@ export { BelongsTo as BelongsToAttr } from './model/attributes/relations/Belongs
 export { HasMany as HasManyAttr } from './model/attributes/relations/HasMany'
 export { HasManyBy as HasManyByAttr } from './model/attributes/relations/HasManyBy'
 export { MorphOne as MorphOneAttr } from './model/attributes/relations/MorphOne'
-export { MorphMany as MorphManyAttr } from './model/attributes/relations/MorphMany'
 export { MorphTo as MorphToAttr } from './model/attributes/relations/MorphTo'
 export { MorphMany as MorphManyAttr } from './model/attributes/relations/MorphMany'
 export * from './modules/RootModule'
@@ -69,7 +68,6 @@ import { BelongsTo as BelongsToAttr } from './model/attributes/relations/Belongs
 import { HasMany as HasManyAttr } from './model/attributes/relations/HasMany'
 import { HasManyBy as HasManyByAttr } from './model/attributes/relations/HasManyBy'
 import { MorphOne as MorphOneAttr } from './model/attributes/relations/MorphOne'
-import { MorphMany as MorphManyAttr } from './model/attributes/relations/MorphMany'
 import { MorphTo as MorphToAttr } from './model/attributes/relations/MorphTo'
 import { MorphMany as MorphManyAttr } from './model/attributes/relations/MorphMany'
 import { Repository } from './repository/Repository'
@@ -97,7 +95,6 @@ export default {
   HasManyAttr,
   HasManyByAttr,
   MorphOneAttr,
-  MorphManyAttr,
   MorphToAttr,
   MorphManyAttr,
   Repository,
diff --git a/src/model/Model.ts b/src/model/Model.ts
index b31ac81..a97d52f 100644
--- a/src/model/Model.ts
+++ b/src/model/Model.ts
@@ -12,7 +12,6 @@ import { BelongsTo } from './attributes/relations/BelongsTo'
 import { HasMany } from './attributes/relations/HasMany'
 import { HasManyBy } from './attributes/relations/HasManyBy'
 import { MorphOne } from './attributes/relations/MorphOne'
-import { MorphMany } from './attributes/relations/MorphMany'
 import { MorphTo } from './attributes/relations/MorphTo'
 import { MorphMany } from './attributes/relations/MorphMany'
 
@@ -250,22 +249,6 @@ export class Model {
     return new MorphOne(model, related.newRawInstance(), id, type, localKey)
   }
 
-  /**
-   * Create a new MorphMany relation instance.
-   */
-  static morphMany(
-    related: typeof Model,
-    id: string,
-    type: string,
-    localKey?: string
-  ): MorphMany {
-    const model = this.newRawInstance()
-
-    localKey = localKey ?? model.$getLocalKey()
-
-    return new MorphMany(model, related.newRawInstance(), id, type, localKey)
-  }
-
   /*
    * Create a new MorphTo relation instance.
    */

From 7e5f0fe266dab6bf95baa8ca8a3e2cf1a0087e91 Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Fri, 3 Dec 2021 08:29:21 -0800
Subject: [PATCH 20/21] Removing another duplicated import

---
 src/index.ts | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/index.ts b/src/index.ts
index d545c66..4f2a69a 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -16,7 +16,6 @@ export * from './model/decorators/attributes/relations/BelongsTo'
 export * from './model/decorators/attributes/relations/HasMany'
 export * from './model/decorators/attributes/relations/HasManyBy'
 export * from './model/decorators/attributes/relations/MorphOne'
-export * from './model/decorators/attributes/relations/MorphMany'
 export * from './model/decorators/attributes/relations/MorphTo'
 export * from './model/decorators/attributes/relations/MorphMany'
 export * from './model/decorators/Contracts'

From f16c6218f26048f632622ac18d75324f98bed339 Mon Sep 17 00:00:00 2001
From: ryandialpad <ryan.lafferty@dialpad.com>
Date: Fri, 3 Dec 2021 08:30:39 -0800
Subject: [PATCH 21/21] Fixing up some comment headers

---
 src/model/Model.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/model/Model.ts b/src/model/Model.ts
index a97d52f..1c87db9 100644
--- a/src/model/Model.ts
+++ b/src/model/Model.ts
@@ -249,7 +249,7 @@ export class Model {
     return new MorphOne(model, related.newRawInstance(), id, type, localKey)
   }
 
-  /*
+  /**
    * Create a new MorphTo relation instance.
    */
   static morphTo(
@@ -264,7 +264,7 @@ export class Model {
     return new MorphTo(instance, relatedModels, id, type, ownerKey)
   }
 
-  /*
+  /**
    * Create a new MorphMany relation instance.
    */
   static morphMany(