april

Answers.md

@@ -0,0 +1,14 @@
+Describe the following: `DataBase`, `Collection` , `Document`
+1.n MongoDB, databases hold collections of documents.
+2.MongoDB stores documents in collections. Collections are analogous to tables in relational da
+tabases.
+3.MongoDB stores data records as BSON documents. BSON is a binary representation of JSON documents, 
+
+1.  Describe how one can achieve the pattern of _relationships_ in MongoDB. What
+    needs to take place at the schema level? How do we _'fill'_ in the
+    appropriate relational data using mongoose?
+1.You achieve it by having one-to-many relationships with document refrences.
+2.schema lays out how data is stored 
+3. we need to populate
+
+1.  Explain a way to break up an API into Sub-Applications, which tool did we use to do that? We used Express Router

README.md

@@ -28,7 +28,7 @@
 
 ## Step 1 - Modeling our Data _hint_: **Three different models, three different files**
 
-* For this project you'll need three different models, budget, Expense and
+* [x]For this project you'll need three different models, budget, Expense and
   Category.
 
 ### **Budget**

budget/CategoryController.js

@@ -0,0 +1,16 @@
+const router = require( "express" ).Router();
+const Budget = require( "./CategoryModel" );
+
+
+
+
+
+
+
+
+
+
+
+
+
+module.exports = router;

budget/CategoryModel.js

@@ -0,0 +1,12 @@
+const mongoose = require( 'mongoose' );
+const ObjectId = mongoose.Schema.Types.ObjectId;
+
+const CategoryModel =  mongoose.Schema( {
+    //     _id: ObjectId( '543d2c72gsb23cd657438921' ),
+    title: {
+        type: String,
+        unique: true,
+        require: true,
+    }
+    });
+module.exports = mongoose.model( 'CategoryModel', CategoryModel );

budget/ExpenseController.js

@@ -0,0 +1,12 @@
+const router = require( "express" ).Router();
+const Budget = require( "./ExpenseModel" );
+
+
+
+
+
+
+
+
+
+module.exports = mongoose.model( 'Expense', Expense );

budget/ExpenseModel.js

@@ -0,0 +1,33 @@
+const mongoose = require( 'mongoose' );
+const ObjectId = mongoose.Schema.Types.ObjectId;
+
+
+const ExpenseSchema = mongoose.Schema( {
+    //     _id: ObjectId( '503c2b66bcf86cs793443564' ),
+    //     amount: 35,
+    //     description: 'potatoes',
+    //     budget: ObjectId( '507f1f77bcf86cd799439011' ), // Monthly Spending
+    //     category: ObjectId( '543d2c72gsb23cd657438921' ) // Groceries
+    amount: {
+        type: Number,
+        unique: true,
+        require: true,
+    },
+    description: {
+        type: String,
+        unique: true,
+        require: true,
+    },
+    budget: {
+        type: ObjectId,
+        ref: 'Budget',
+        required: true
+    },
+    category: {
+        type: ObjectId,
+        ref: 'Category',
+        required: true
+    }
+} );
+
+module.exports = mongoose.model( 'ExpenseModel', ExpenseModel);

budget/budgetController.js

@@ -0,0 +1,62 @@
+const router = require( "express" ).Router();
+const Budget = require( "./budgetModel" );
+
+
+
+const get = ( req, res ) =>
+{
+    Budget
+        .find()
+        .then( budget =>
+        {
+            res.json( { budget } )
+        } )
+        .catch( err =>
+        {
+            sendUserError( 500, "There was an error in retrieving budgets", res, err );
+        } );
+};
+const post = ( req, res ) =>
+{
+    const { title, budgetAmount } = req.body;
+    const budget = new Budget( { title, budgetAmount } );
+    budget
+        .save()
+        .then( budget =>
+        {
+            res.status( 201 ).json( { budget } );
+        } )
+        .catch( err =>
+        {
+            sendUserError( 500, "There was an error in saving budget to database", res, err );
+        } );
+};
+
+const getId = ( req, res ) =>
+{
+    const { id } = req.params;
+
+    Budget
+        .findById( id )
+        .then( budget =>
+        {
+            res.json( { budget } );
+        } )
+        .catch( err =>
+        {
+            sendUserError( 500, `There was an error in retrieving budget ${ id } from database`, res, err )
+        } );
+};
+
+
+router
+    .route( "/" )
+    .get( get )
+    .post( post );
+
+router
+    .route( "/:id" )
+    .get( getId );
+
+
+module.exports = router;

budget/budgetModel.js

@@ -0,0 +1,18 @@
+const mongoose = require( 'mongoose' );
+const ObjectId = mongoose.Schema.Types.ObjectId;
+
+const Budget =  mongoose.Schema({
+    //_id: ObjectId( '507f1f77bcf86cd799439011' ),
+
+    title: {
+        type: String,
+        unique: true,
+        require: true,
+    },
+        budgetAmount: {
+            type: Number,
+            default: 0,
+        }
+} );
+
+module.exports = mongoose.model('budgetModel', Budget)