unique annotation added #7

Author: Robin Buschmann

README.md

@@ -150,6 +150,7 @@ Decorator                             | Description
 --------------------------------------|---------------------
  `@AllowNull(allowNull?: boolean)`    | sets `attribute.allowNull` (default is `true`)
  `@AutoIncrement`                     | sets `attribute.autoIncrement=true`
+ `@Unique`                            | sets `attribute.unique=true`
  `@Default(value: any)`               | sets `attribute.defaultValue` to specified value
  `@PrimaryKey`                        | sets `attribute.primaryKey=true`
  Validate annotations                 | see [Model valiation](#model-validation)

index.ts

@@ -15,6 +15,7 @@ export {Table} from "./lib/annotations/Table";
 export {CreatedAt} from "./lib/annotations/CreatedAt";
 export {DeletedAt} from "./lib/annotations/DeletedAt";
 export {UpdatedAt} from "./lib/annotations/UpdatedAt";
+export {Unique} from "./lib/annotations/Unique";
 
 export {Contains} from "./lib/annotations/validation/Contains";
 export {Equals} from "./lib/annotations/validation/Equals";

lib/annotations/Unique.ts

@@ -0,0 +1,12 @@
+import 'reflect-metadata';
+import {addAttributeOptions} from "../services/models";
+
+/**
+ * Sets unique option true for annotated property.
+ */
+export function Unique(target: any, propertyName: string): void {
+
+  addAttributeOptions(target, propertyName, {
+    unique: true
+  });
+}

test/models/User.ts

@@ -1,4 +1,4 @@
-import {Table, Model, PrimaryKey, Column, AutoIncrement, DataType, Default, AllowNull} from "../../index";
+import {Table, Model, PrimaryKey, Column, AutoIncrement, DataType, Default, AllowNull, Unique} from "../../index";
 
 @Table
 export class User extends Model<User> {
@@ -14,10 +14,9 @@ export class User extends Model<User> {
   })
   uuidv1: string;
 
-  @Column({
-    type: DataType.UUID,
-    defaultValue: DataType.UUIDV4
-  })
+  @Unique
+  @Default(DataType.UUIDV4)
+  @Column(DataType.UUID)
   uuidv4: string;
 
   @Column
@@ -38,7 +37,7 @@ export class User extends Model<User> {
   @Default(false)
   @AllowNull(false)
   @Column(DataType.BOOLEAN)
-  isSuperUser: boolean|number;
+  isSuperUser: boolean | number;
 
   @Column({
     defaultValue: DataType.NOW

test/specs/table_column.spec.ts

@@ -28,6 +28,7 @@ describe('table_column', () => {
     },
     uuidv4: {
       type: DataType.UUID,
+      unique: true,
       defaultValue: DataType.UUIDV4
     },
     username: {