angular-10-mongodb-node-js-express-crud-feature-image

Angular 10 + MongoDB example with Node.js Express: CRUD App

In this tutorial, I will show you how to make Angular 10 connect to MongoDB with Node.js Express. We’re gonna build a full-stack (MEAN stack) CRUD Application in which, the back-end server uses Node.js + Express for REST APIs, front-end side is an Angular App with HTTPClient.

Serverless with Firebase:
Angular 10 Firebase CRUD Realtime Database


Angular 10 + MongoDB example with Node.js Express

We will build a full-stack Tutorial Application in that:

  • Tutorial has id, title, description, published status.
  • User can create, retrieve, update, delete Tutorials.
  • There is a search box for finding Tutorials by title.

Here are screenshots of the example.

– Add an object:

angular-10-mongodb-node-js-express-example-crud-create

– Retrieve all objects:

angular-10-mongodb-node-js-express-example-crud-retrieve-all

– Click on Edit button to update an object:

angular-10-mongodb-node-js-express-example-crud-get-object

On this Page, you can:

  • change status to Published using Publish button
  • delete the Tutorial using Delete button
  • update the Tutorial details with Update button

angular-10-mongodb-node-js-express-example-crud-update

– Search Tutorials by title:

angular-10-mongodb-node-js-express-example-crud-search

Full-stack CRUD App Architecture

We’re gonna build the application with following architecture:

angular-10-mongodb-node-js-express-crud-architecture

– Node.js Express exports REST APIs & interacts with MongoDB Database using Mongoose ODM.
– Angular Client sends HTTP Requests and retrieves HTTP Responses using HTTPClient, consume data on the components. Angular Router is used for navigating to pages.

Node.js Express MongoDB Back-end

Overview

These are APIs that Node.js Express App will export:

MethodsUrlsActions
GETapi/tutorialsget all Tutorials
GETapi/tutorials/:idget Tutorial by id
POSTapi/tutorialsadd new Tutorial
PUTapi/tutorials/:idupdate Tutorial by id
DELETEapi/tutorials/:idremove Tutorial by id
DELETEapi/tutorialsremove all Tutorials
GETapi/tutorials?title=[kw]find all Tutorials which title contains 'kw'

Project Structure

angular-10-mongodb-node-express-crud-backend-project-structure

db.config.js exports configuring parameters for MongoDB connection & Mongoose.
Express web server in server.js where we configure CORS, initialize & run Express REST APIs.
– Next, we add configuration for MongoDB database in models/index.js, create Mongoose data model in models/tutorial.model.js.
– Tutorial controller in controllers.
– Routes for handling all CRUD operations (including custom finder) in tutorial.routes.js.

Implementation

You can find step by step to implement this Node.js Express App in the post:
Node.js, Express & MongoDb: Build a CRUD Rest Api example

Angular 10 Front-end

Overview

angular-10-mongodb-node-express-crud-example-front-end-overview

– The App component is a container with router-outlet. It has navbar that links to routes paths via routerLink.

TutorialsList component gets and displays Tutorials.
Tutorial component has form for editing Tutorial’s details based on :id.
AddTutorial component has form for submission new Tutorial.

– These Components call TutorialService methods which use Angular HTTPClient to make HTTP requests and receive responses.

Project Structure

angular-10-mongodb-node-js-express-client-project-structure

– There are 3 components: tutorials-list, tutorial-details, add-tutorial.
tutorial.service has methods for sending HTTP requests to the Apis.
app-routing.module.ts defines routes for each component.
app component contains router view and navigation bar.
app.module.ts declares Angular components and import necessary modules.

Implementation

You can find step by step to implement this Angular App in the post:
Angular 10 CRUD Application example with Web API

Older version: Angular 8 CRUD Application example with Web API

Conclusion

Now we have an overview of how to make Angular 10 connect to MongoDB with Node.js Express when building a full-stack CRUD App (MEAN stack).

We also take a look at client-server architecture for REST API using Express & Mongoose ODM, as well as Angular 10 project structure for building a front-end app to make HTTP requests and consume responses.

Next tutorials show you more details about how to implement the system:

Or Serverless with Firebase:
Angular 10 Firebase CRUD Realtime Database

Happy learning, see you again!

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