├── .gitignore
├── README.md
├── app.js
├── db.js
├── index.html
├── package-lock.json
└── package.json


/.gitignore:
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1 | node_modules


--------------------------------------------------------------------------------
/README.md:
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1 | # Todo_Rest_CRUD_Application_JQuery_FetchAPI
2 | Make sure to change into directory and run "Npm install" to download modules
3 | 
4 | Source Code for Todo Rest CRUD Application Tutorial found here:
5 | 
6 | https://www.youtube.com/watch?v=U7vikICNygc&list=PLvTjg4siRgU1ucYFHJy1tkwFjf73D0fGa
7 | 
8 | Noobcoder.com
9 | 


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/app.js:
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  1 | const express = require('express');
  2 | const bodyParser = require("body-parser");
  3 | const path = require('path');
  4 | const Joi = require('joi');
  5 | 
  6 | const db = require("./db");
  7 | const collection = "todo";
  8 | const app = express();
  9 | 
 10 | // schema used for data validation for our todo document
 11 | const schema = Joi.object().keys({
 12 |     todo : Joi.string().required()
 13 | });
 14 | 
 15 | // parses json data sent to us by the user 
 16 | app.use(bodyParser.json());
 17 | 
 18 | // serve static html file to user
 19 | app.get('/',(req,res)=>{
 20 |     res.sendFile(path.join(__dirname,'index.html'));
 21 | });
 22 | 
 23 | // read
 24 | app.get('/getTodos',(req,res)=>{
 25 |     // get all Todo documents within our todo collection
 26 |     // send back to user as json
 27 |     db.getDB().collection(collection).find({}).toArray((err,documents)=>{
 28 |         if(err)
 29 |             console.log(err);
 30 |         else{
 31 |             res.json(documents);
 32 |         }
 33 |     });
 34 | });
 35 | 
 36 | // update
 37 | app.put('/:id',(req,res)=>{
 38 |     // Primary Key of Todo Document we wish to update
 39 |     const todoID = req.params.id;
 40 |     // Document used to update
 41 |     const userInput = req.body;
 42 |     // Find Document By ID and Update
 43 |     db.getDB().collection(collection).findOneAndUpdate({_id : db.getPrimaryKey(todoID)},{$set : {todo : userInput.todo}},{returnOriginal : false},(err,result)=>{
 44 |         if(err)
 45 |             console.log(err);
 46 |         else{
 47 |             res.json(result);
 48 |         }      
 49 |     });
 50 | });
 51 | 
 52 | 
 53 | //create
 54 | app.post('/',(req,res,next)=>{
 55 |     // Document to be inserted
 56 |     const userInput = req.body;
 57 | 
 58 |     // Validate document
 59 |     // If document is invalid pass to error middleware
 60 |     // else insert document within todo collection
 61 |     Joi.validate(userInput,schema,(err,result)=>{
 62 |         if(err){
 63 |             const error = new Error("Invalid Input");
 64 |             error.status = 400;
 65 |             next(error);
 66 |         }
 67 |         else{
 68 |             db.getDB().collection(collection).insertOne(userInput,(err,result)=>{
 69 |                 if(err){
 70 |                     const error = new Error("Failed to insert Todo Document");
 71 |                     error.status = 400;
 72 |                     next(error);
 73 |                 }
 74 |                 else
 75 |                     res.json({result : result, document : result.ops[0],msg : "Successfully inserted Todo!!!",error : null});
 76 |             });
 77 |         }
 78 |     })    
 79 | });
 80 | 
 81 | 
 82 | 
 83 | //delete
 84 | app.delete('/:id',(req,res)=>{
 85 |     // Primary Key of Todo Document
 86 |     const todoID = req.params.id;
 87 |     // Find Document By ID and delete document from record
 88 |     db.getDB().collection(collection).findOneAndDelete({_id : db.getPrimaryKey(todoID)},(err,result)=>{
 89 |         if(err)
 90 |             console.log(err);
 91 |         else
 92 |             res.json(result);
 93 |     });
 94 | });
 95 | 
 96 | // Middleware for handling Error
 97 | // Sends Error Response Back to User
 98 | app.use((err,req,res,next)=>{
 99 |     res.status(err.status).json({
100 |         error : {
101 |             message : err.message
102 |         }
103 |     });
104 | })
105 | 
106 | 
107 | db.connect((err)=>{
108 |     // If err unable to connect to database
109 |     // End application
110 |     if(err){
111 |         console.log('unable to connect to database');
112 |         process.exit(1);
113 |     }
114 |     // Successfully connected to database
115 |     // Start up our Express Application
116 |     // And listen for Request
117 |     else{
118 |         app.listen(3000,()=>{
119 |             console.log('connected to database, app listening on port 3000');
120 |         });
121 |     }
122 | });
123 | 
124 | 


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/db.js:
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 1 | const MongoClient = require("mongodb").MongoClient;
 2 | const ObjectID = require('mongodb').ObjectID;
 3 | // name of our database
 4 | const dbname = "crud_mongodb";
 5 | // location of where our mongoDB database is located
 6 | const url = "mongodb://localhost:27017";
 7 | // Options for mongoDB
 8 | const mongoOptions = {useNewUrlParser : true};
 9 | 
10 | const state = {
11 |     db : null
12 | };
13 | 
14 | const connect = (cb) =>{
15 |     // if state is not NULL
16 |     // Means we have connection already, call our CB
17 |     if(state.db)
18 |         cb();
19 |     else{
20 |         // attempt to get database connection
21 |         MongoClient.connect(url,mongoOptions,(err,client)=>{
22 |             // unable to get database connection pass error to CB
23 |             if(err)
24 |                 cb(err);
25 |             // Successfully got our database connection
26 |             // Set database connection and call CB
27 |             else{
28 |                 state.db = client.db(dbname);
29 |                 cb();
30 |             }
31 |         });
32 |     }
33 | }
34 | 
35 | // returns OBJECTID object used to 
36 | const getPrimaryKey = (_id)=>{
37 |     return ObjectID(_id);
38 | }
39 | 
40 | // returns database connection 
41 | const getDB = ()=>{
42 |     return state.db;
43 | }
44 | 
45 | module.exports = {getDB,connect,getPrimaryKey};


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/index.html:
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  1 | <!doctype html>
  2 | <html lang="en">
  3 |   <head>
  4 |     <!-- Required meta tags -->
  5 |     <meta charset="utf-8">
  6 |     <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
  7 | 
  8 |     <!-- Bootstrap CSS -->
  9 |     <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
 10 | 
 11 |     <title>Todo Crud Application</title>
 12 |   </head>
 13 |   <body>
 14 |     <div class="container">
 15 |         <div class="row">
 16 |             <div class="col-lg-2"></div>
 17 |             <div class="col-lg-8">
 18 |                 <form id="form">
 19 |                     <div class="form-group">
 20 |                         <label for="todo">Todo</label>
 21 |                         <input type="text" class="form-control" id="todoUserInput" placeholder="Todo">
 22 |                         <button type="submit" class="btn btn-primary">Create</button>
 23 |                     </div>
 24 |                     
 25 |                 </form>
 26 |             </div>
 27 |             <div class="col-lg-2"></div>
 28 |         </div>
 29 |         <div class="row">
 30 |             <div class="col-lg-2"></div>
 31 |             <div class="col-lg-8">
 32 |                 <ul class="list-group" id="display">
 33 |                 
 34 |                 </ul>
 35 |             </div>
 36 |             <div class="col-lg-2"></div>
 37 |         </div> 
 38 |         <br>
 39 |         <div class="row">
 40 |             <div class="col-lg-2"></div>
 41 |             <div class="col-lg-8">
 42 |                 <div class="alert" role="alert" id="message">
 43 |                     
 44 |                 </div>
 45 |             </div>
 46 |             <div class="col-lg-2"></div>
 47 |         </div>
 48 |            
 49 |     </div>
 50 | 
 51 |     <!-- Optional JavaScript -->
 52 |     <!-- jQuery first, then Popper.js, then Bootstrap JS -->
 53 |     <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
 54 |     <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
 55 |     <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
 56 |     <script>
 57 |         $(document).ready(()=>{
 58 |             const display = $("#display");
 59 |             const form = $("#form");
 60 |             const todoUserInput = $("#todoUserInput");
 61 |             const message = $("#message");
 62 |             message.hide();
 63 | 
 64 |             const displayMessage = (flag,msg)=>{
 65 |                 // successful
 66 |                 if(flag){
 67 |                     message.removeClass('alert-danger');
 68 |                     message.addClass('alert-success');
 69 |                     message.html(msg);
 70 |                     message.show();
 71 |                 }
 72 |                 else{
 73 |                     message.removeClass('alert-success');
 74 |                     message.addClass('alert-danger');
 75 |                     message.html(msg);
 76 |                     message.show();
 77 |                 }
 78 |             }
 79 |  
 80 |             const getTodos = ()=>{
 81 |                 fetch('/getTodos',{method : "get"}).then((response)=>{
 82 |                     return response.json();
 83 |                 }).then((data)=>{
 84 |                     console.log(data);
 85 |                     displayTodos(data);
 86 |                 });
 87 |             }
 88 | 
 89 |             getTodos();
 90 | 
 91 |             const resetTodosInput = ()=>{
 92 |                 todoUserInput.val('');
 93 |             }
 94 | 
 95 |             const editTodo = (todo,todoID,editID)=>{
 96 |                 let editBtn = $(`#${editID}`);
 97 |                 editBtn.click(()=>{
 98 |                     fetch(`/${todo._id}`,{
 99 |                         method : "put",
100 |                         headers : {
101 |                             "Content-Type" : "application/json; charset=utf-8" 
102 |                         },
103 |                         body : JSON.stringify({todo : todoUserInput.val()})
104 |                     }).then((response)=>{
105 |                         return response.json();
106 |                     }).then((data)=>{
107 |                         if(data.ok == 1){
108 |                             let todoIndex = $(`#${todoID}`);
109 |                             todoIndex.html(data.value.todo);
110 |                             resetTodosInput();
111 |                         }
112 |                     });
113 |                 });
114 |             }
115 | 
116 |             const deleteTodo = (todo,listItemID,deleteID)=>{
117 |                 let deleteBtn = $(`#${deleteID}`);
118 |                 deleteBtn.click(()=>{
119 |                     fetch(`/${todo._id}`,{
120 |                         method: "delete"
121 |                     }).then((response)=>{
122 |                         return response.json();
123 |                     }).then((data)=>{
124 |                         if(data.ok == 1){
125 |                             $(`#${listItemID}`).remove();
126 |                         }
127 |                     });
128 |                 });
129 |             }
130 | 
131 | 
132 |             const buildIDS = (todo)=>{
133 |                 return {
134 |                     editID : "edit_" + todo._id,
135 |                     deleteID : "delete_" + todo._id,
136 |                     listItemID : "listItem_" + todo._id,
137 |                     todoID : "todo_" + todo._id
138 |                 }
139 |             }
140 | 
141 |             const buildTemplate = (todo,ids)=>{
142 |                 return `<li class="list-group-item" id="${ids.listItemID}">
143 |                             <div class="row">
144 |                                 <div class="col-md-4" id="${ids.todoID}">${todo.todo}</div>
145 |                                 <div class="col-md-4"></div>
146 |                                 <div class="col-md-4 text-right">
147 |                                     <button type="button" class="btn btn-secondary" id="${ids.editID}">Edit</button>
148 |                                     <button type="button" class="btn btn-danger" id="${ids.deleteID}">Delete</button>
149 |                                 </div>
150 |                             </div>
151 |                        </li>`;
152 |             }
153 | 
154 |             const displayTodos = (data)=>{
155 |                 data.forEach((todo)=>{
156 |                     let ids = buildIDS(todo);
157 |                     display.append(buildTemplate(todo,ids));
158 |                     editTodo(todo,ids.todoID,ids.editID);
159 |                     deleteTodo(todo,ids.listItemID,ids.deleteID);
160 |                 });
161 |             }
162 | 
163 |             form.submit((e)=>{
164 |                 e.preventDefault();
165 |                 fetch('/',{
166 |                     method : 'post',
167 |                     body : JSON.stringify({todo : todoUserInput.val()}),
168 |                     headers : {
169 |                         "Content-Type" : "application/json; charset=utf-8"
170 |                     }
171 |                 }).then((response)=>{
172 |                     return response.json();
173 |                 }).then((data)=>{
174 |                     if(!data.error){
175 |                         if(data.result.ok == 1 && data.result.n == 1){
176 |                             let ids = buildIDS(data.document);
177 |                             display.append(buildTemplate(data.document,ids));
178 |                             editTodo(data.document,ids.todoID,ids.editID);
179 |                             deleteTodo(data.document,ids.listItemID,ids.deleteID);
180 |                             displayMessage(true,data.msg);
181 |                         }
182 |                     }
183 |                     else
184 |                         displayMessage(false,data.error.message);
185 | 
186 |                     resetTodosInput();
187 |                     
188 |                 });
189 |             });
190 | 
191 |         });
192 |     </script>
193 | </body>
194 | </html>


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/package-lock.json:
--------------------------------------------------------------------------------
  1 | {
  2 |   "name": "mongodb_crud",
  3 |   "version": "1.0.0",
  4 |   "lockfileVersion": 1,
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137 |         "statuses": "~1.4.0",
138 |         "type-is": "~1.6.16",
139 |         "utils-merge": "1.0.1",
140 |         "vary": "~1.1.2"
141 |       },
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154 |       "requires": {
155 |         "debug": "2.6.9",
156 |         "encodeurl": "~1.0.2",
157 |         "escape-html": "~1.0.3",
158 |         "on-finished": "~2.3.0",
159 |         "parseurl": "~1.3.2",
160 |         "statuses": "~1.4.0",
161 |         "unpipe": "~1.0.0"
162 |       },
163 |       "dependencies": {
164 |         "statuses": {
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168 |         }
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170 |     },
171 |     "forwarded": {
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174 |       "integrity": "sha1-mMI9qxF1ZXuMBXPozszZGw/xjIQ="
175 |     },
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--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "mongodb_crud",
 3 |   "version": "1.0.0",
 4 |   "description": "",
 5 |   "main": "app.js",
 6 |   "scripts": {
 7 |     "test": "echo \"Error: no test specified\" && exit 1"
 8 |   },
 9 |   "keywords": [],
10 |   "author": "",
11 |   "license": "ISC",
12 |   "dependencies": {
13 |     "body-parser": "^1.18.3",
14 |     "express": "^4.16.4",
15 |     "joi": "^14.3.0",
16 |     "mongodb": "^3.1.10",
17 |     "path": "^0.12.7"
18 |   }
19 | }
20 | 


--------------------------------------------------------------------------------