CRUD Operations In Express, Nodejs And MongoDB

Create RESTful API With MongoDB, Express, Node Js – Today we will learn how to create node Js APIs with Mongoose using node js Framework express. Very helpful new backend developer.

This blog may help you to get started, In this tutorial, we will be starting node.js express MongoDB crud creating a server and CRUD (Create, Read, Update and Delete) operations.

How to create Restful API in node js with MongoDB.

So let’s get started with it.

Step 1: Setting up the Server

First of all, We need to new express js application .

Now install Mongoose with NPM. Go to the terminal and use the below commands :

Step 2: Database Connectivity mongoose

In this step after setting up the server we will be setting up your database connection, for that, we have to create another file in the root folder db.js with the following content.

Here we have required the mongoose module to create CRUD Operations in Express, Nodejs, and MongoDB. Mongoose is an Object Data Modeling (ODM) library for MongoDB and Node.js. Mongoose manages relationships between data provides schema validation and is used to translate between objects in code and the representation of those objects in mongoose crud.

Now run the command node app.js to run your server and making the connection to DB. Also, do not forget to import your DB file in app.js.

Let’s move further with our CRUD operation Node.js.

Step 3: Defining the User Model

In this step, we will work on CRUD operation in express, Nodejs, mongoose for a User. So our first step towards it would be defining the model in your project.

To make your code looks clean do make a separate folder for models and create a UserModel.js file in it.

Now we will be defining our node model using mongoose.

Now we have created the model in your node.js express MongoDB crud, you can edit the fields according to your needs.

Step 4: Writing Controller functions

After creating the user model we now have to create the user controller file in the controller folder in your project crud operation in nodejs, expressjs, MongoDB.

So we will be defining our CRUD operation Nodejs in this file.

The first function we will be writing a create function for a user.

Here we are using the find() function to find all users we can also use the findAll() function for the same.

To find a single user we are finding it by id, we have a function findById() for the same, we just have to pass the user id in params.

We can delete a user with the help of a function findByIdAndRemove() bypassing the id in param.

The {new: true} option in the findByIdAndUpdate() the method is used to return the modified document to the original.

Congratulations! you’re almost done with CRUD Operations in Express, Nodejs, and MongoDB.

Now the last step left is to set up the routes. go to root file linked index.js, app.js, etc. and put this code see below:

Now! You’re All done!

Don’t forget to test these API’s using Postman.

Today we will learn how to create node Js APIs with Mongoose using node js Framework express.