Laravel 9 REST API CRUD Tutorial by Example

Laravel 9 REST API CRUD Tutorial with Example

Laravel 9 REST API CRUD Tutorial with Example

In this post, we will give you Laravel 9 REST API CRUD Tutorial with Example, hear for Laravel 9 REST API CRUD Tutorial with Example we will give you details about it.

Throughout this tutorial for beginners, you’ll learn to use Laravel 9 – the latest version of one of the most popular PHP frameworks – to create a REST API CRUD web application with a MySQL database and Bootstrap 4 styles from scratch and step by step starting with the installation of Composer (PHP package manager) to implementing and serving your application.

Creating our Laravel 9 REST API CRUD

Before implementing our Laravel 9 REST API CRUD application, let’s see the prerequisites that we’ll need to have for this tutorial.

Prerequisites

This tutorial assumes you have PHP and MySQL installed on your system. Follow the instructions for your operating system to install both of them.

You also need to be familiar with Linux/macOS bash where we’ll be executing the commands in this tutorial.

Familiarly with PHP is required since Laravel 9 is based on PHP.

Please check out the previous tutorial for how to Install Laravel 9 and PHP 7.3.

We have covered the following topics in our previous post:

  • Installing PHP 7.3+
  • Installing the Required PHP 7.3 Modules
  • Installing PHP Composer
  • Installing and Creating a Laravel 9 Project
  • Installing the Front-End Dependencies

After we have installed Laravel 9 and created a new project, let’s create our Laravel 9 REST API example.

Creating a MySQL Database

Let’s start by creating a MySQL database that we’ll use to persist data in our Laravel 9 REST API CRUD application.

In your terminal, run the following command to run the mysql client:

$ mysql -u root -p

When prompted, enter the password for your MySQL server when you’ve installed it.

Next, run the following SQL statement to create a db database:

mysql> create database db;

Open the .env file and update the credentials to access your MySQL database:

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=db
DB_USERNAME=root
DB_PASSWORD=******

You need to enter the database name, username, and password.

At this point, you can run the migrate command to create your database and a bunch of SQL tables needed by Laravel:

$ php artisan migrate

Note: You can run the migrate command at any other points of your development to add other SQL tables in your database or to later your database if you need to add any changes later.

Creating your First Laravel 9 REST API CRUD Model

Laravel uses the MVC architectural pattern to organize your application in three decoupled parts:

  • The Model which encapsulates the data access layer,
  • The View which encapsulates the representation layer,
  • The controller encapsulates the code to control the application and communicates with the model and view layers.

Now, let’s create our first Laravel Model. In your terminal, run the following command:

$ php artisan make:model Contact --migration

This will make a Contact.php the model file inside the app/Models directory of your Laravel 9 project and a migration file will be created inside the database migrations directory.

In the terminal, we get an output similar to:

Model created successfully.
Created Migration: 2021_09_20_193840_create_contacts_table

Open the database/migrations/xxxxxx_create_contacts_table migration file and update it accordingly:

<?php

use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreateContactsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('contacts', function (Blueprint $table) {
            $table->increments('id');
            $table->timestamps();
            $table->string('first_name');
            $table->string('last_name');
            $table->string('email');
            $table->string('job_title');
            $table->string('city');   
            $table->string('country');            
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('contacts');
    }
}

We added the first_namelast_nameemailjob_titlecity and country fields in the contacts table.

You can now create the contacts a table in the database using the following command:

$ php artisan migrate

Now, let’s look at our Contact model, which will be used to interact with the contacts database table. Open the app/Models/Contact.php file and update it as follows:

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Contact extends Model
{
    protected $fillable = [
        'first_name',
        'last_name',
        'email',
        'city',
        'country',
        'job_title'       
    ];
}

Creating the Laravel 9 Controller and Routes

After creating the model and migrated our database. Let’s now create the controller and the routes for working with the Contact model. In your terminal, run the following command:

$ php artisan make:controller ContactController --resource

Laravel resource routing assigns the typical “CRUD” routes to a controller with a single line of code. For example, you may wish to create a controller that handles all HTTP requests for “photos” stored by your application. Using the make:controller Artisan command, we can quickly create such a controller:

This command will generate a controller at app/Http/Controllers/ContactController.php. The controller will contain a method for each of the available resource operations.

Open the app/Http/Controllers/ContactController.php file. This is the initial content:

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class ContactController extends Controller
{
    /**
     * Display a listing of the resource.
     * Laravel 9 REST API CRUD
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        //
    }

    /**
     * Show the form for creating a new resource.
     * Laravel 9 REST API CRUD
     * @return \Illuminate\Http\Response
     */
    public function create()
    {
        //
    }

    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
        //
    }

    /**
     * Display the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function show($id)
    {
        //
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function edit($id)
    {
        //
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request, $id)
    {
        //
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function destroy($id)
    {
        //
    }
}

The ContactController class extends Controller class available from Laravel and defines a bunch of methods that will be used to do the CRUD operations against the Contact model.

You can read the role of the method in the comment above it.

Now we need to provide implementations for these methods.

But before that, let’s add routing. Open the routes/web.php file and update it accordingly:

<?php
Route::get('/', function () {
    return view('welcome');
});

Route::resource('contacts', 'App\Http\Controllers\ContactController');

In previous versions of Laravel, there was a property in the RouteServiceProvider.php called $namespace that was used to prefix the namespace of your controllers automatically by adding App\Http\Controllers but in Laravel 9, you should add that yourself.

You can also use the following syntax:

Route::resource('contacts', ContactController::class);

Using the resource() static method of Route, you can create multiple routes to expose multiple actions on the resource.

These routes are mapped to various ContactController methods that will need to implement in the next section:

  • GET/contacts, mapped to the index() method,
  • GET /contacts/create, mapped to the create() method,
  • POST /contacts, mapped to the store() method,
  • GET /contacts/{contact}, mapped to the show() method,
  • GET /contacts/{contact}/edit, mapped to the edit() method,
  • PUT/PATCH /contacts/{contact}, mapped to the update() method,
  • DELETE /contacts/{contact}, mapped to the destroy() method.

These routes are used to serve HTML templates and also as API endpoints for working with the Contact model.

Note: If you want to create a controller that will only expose a RESTful API, you can use the apiResource method to exclude the routes that are used to serve the HTML templates:

Route::apiResource('contacts', 'ContactController');

Implementing the Laravel 9 REST API CRUD Operations

Let’s now implement the controller methods alongside the views.

C: Implementing the Create Operation and Adding a Form

The ContactController includes the store() a method that maps to the POST /contacts API endpoint which will be used to create a contact in the database and the create() that maps to the GET /contacts/create a route that will be used to serve the HTML form used to submit the contact to POST /contacts API endpoint.

Let’s implement these two methods.

Re-open the app/Http/Controllers/ContactController.php file and start by importing the Contact model:

use App\Contact;

Next, locate the store() method and update it accordingly:

    public function store(Request $request)
    {
        $request->validate([
            'first_name'=>'required',
            'last_name'=>'required',
            'email'=>'required'
        ]);

        $contact = new Contact([
            'first_name' => $request->get('first_name'),
            'last_name' => $request->get('last_name'),
            'email' => $request->get('email'),
            'job_title' => $request->get('job_title'),
            'city' => $request->get('city'),
            'country' => $request->get('country')
        ]);
        $contact->save();
        return redirect('/contacts')->with('success', 'Contact saved!');
    }

Next, locate the create() method and update it:

    public function create()
    {
        return view('contacts.create');
    }

The create() the function makes use of the view() method to return the create.blade.php the template which needs to be present in the resources/views folder.

Before creating the create.blade.php the template we need to create a base template that will be extended by the create template and all the other templates that will create later in this tutorial.

In the resources/views folder, create a base.blade.php file:

$ cd resources/views
$ touch base.blade.php

Open the resources/views/base.blade.php file and add the following blade template:

<!DOCTYPE html>
<html lang="en">
<head>
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Laravel 9 REST API CRUD Tutorial</title>
  <link href="{{ asset('css/app.css') }}" rel="stylesheet" type="text/css" />
</head>
<body>
  <div class="container">
    @yield('main')
  </div>
  <script src="{{ asset('js/app.js') }}" type="text/js"></script>
</body>
</html>

Now, let’s create the create.blade.php template. First, create a contacts folder in the views folder:

$ mkdir contacts

Next, create the template

$ cd contacts
$ touch create.blade.php

Open the resources/views/contacts/create.blade.php file and add the following code:

@extends('base')

@section('main')
<div class="row">
 <div class="col-sm-8 offset-sm-2">
    <h1 class="display-3">Add a contact</h1>
  <div>
    @if ($errors->any())
      <div class="alert alert-danger">
        <ul>
            @foreach ($errors->all() as $error)
              <li>{{ $error }}</li>
            @endforeach
        </ul>
      </div><br />
    @endif
      <form method="post" action="{{ route('contacts.store') }}">
          @csrf
          <div class="form-group">    
              <label for="first_name">First Name:</label>
              <input type="text" class="form-control" name="first_name"/>
          </div>

          <div class="form-group">
              <label for="last_name">Last Name:</label>
              <input type="text" class="form-control" name="last_name"/>
          </div>

          <div class="form-group">
              <label for="email">Email:</label>
              <input type="text" class="form-control" name="email"/>
          </div>
          <div class="form-group">
              <label for="city">City:</label>
              <input type="text" class="form-control" name="city"/>
          </div>
          <div class="form-group">
              <label for="country">Country:</label>
              <input type="text" class="form-control" name="country"/>
          </div>
          <div class="form-group">
              <label for="job_title">Job Title:</label>
              <input type="text" class="form-control" name="job_title"/>
          </div>                         
          <button type="submit" class="btn btn-primary-outline">Add contact</button>
      </form>
  </div>
</div>
</div>
@endsection

This is a screenshot of our create form!

Laravel 9 REST API CRUD Tutorial
Laravel 9 REST API CRUD Tutorial

Fill out the form and click on the Add contact button to create a contact in the database. You should be redirected to /contacts route which doesn’t have a view associated with it yet.

R: Implementing the Read Operation and Getting Data

Next, let’s implement the read operation to get and display contact data from our MySQL database.

Go to the app/Http/Controllers/ContactController.php file, locate the index() method and update it:

    public function index() {
        $contacts = Contact::all();
        return view('contacts.index', compact('contacts'));
    }

Next, you need to create the index template. Create a resources/views/contacts.index.blade.php file:

$ touch index.blade.php

Open the resources/views/contacts/index.blade.php file and add the following code:

@extends('base')

@section('main')
<div class="row">
<div class="col-sm-12">
    <h1 class="display-3">Contacts for Laravel 9 REST API CRUD</h1>    
  <table class="table table-striped">
    <thead>
        <tr>
          <td>ID</td>
          <td>Name</td>
          <td>Email</td>
          <td>Job Title</td>
          <td>City</td>
          <td>Country</td>
          <td colspan = 2>Actions</td>
        </tr>
    </thead>
    <tbody>
        @foreach($contacts as $contact)
        <tr>
            <td>{{$contact->id}}</td>
            <td>{{$contact->first_name}} {{$contact->last_name}}</td>
            <td>{{$contact->email}}</td>
            <td>{{$contact->job_title}}</td>
            <td>{{$contact->city}}</td>
            <td>{{$contact->country}}</td>
            <td>
                <a href="{{ route('contacts.edit',$contact->id)}}" class="btn btn-primary">Edit</a>
            </td>
            <td>
                <form action="{{ route('contacts.destroy', $contact->id)}}" method="post">
                  @csrf
                  @method('DELETE')
                  <button class="btn btn-danger" type="submit">Delete</button>
                </form>
            </td>
        </tr>
        @endforeach
    </tbody>
  </table>
<div>
</div>
@endsection

U: Implementing the Update Operation

Next, we need to implement the update operation. Go to the app/Http/Controllers/ContactController.php file, locate the edit($id) method and update it:

    public function edit($id)
    {
        $contact = Contact::find($id);
        return view('contacts.edit', compact('contact'));        
    }

Next, you need to implement the update() method:

    public function update(Request $request, $id)
    {
        $request->validate([
            'first_name'=>'required',
            'last_name'=>'required',
            'email'=>'required'
        ]);

        $contact = Contact::find($id);
        $contact->first_name =  $request->get('first_name');
        $contact->last_name = $request->get('last_name');
        $contact->email = $request->get('email');
        $contact->job_title = $request->get('job_title');
        $contact->city = $request->get('city');
        $contact->country = $request->get('country');
        $contact->save();

        return redirect('/contacts')->with('success', 'Contact updated!');
    }

Now, you need to add the edit template. Inside the resources/views/contacts/, create an edit.blade.php file:

$ touch edit.blade.php

Open the resources/views/contacts/edit.blade.php file and add this code:

@extends('base') 
@section('main')
<div class="row">
    <div class="col-sm-8 offset-sm-2">
        <h1 class="display-3">Update a contact for Laravel 9 REST API CRUD</h1>

        @if ($errors->any())
        <div class="alert alert-danger">
            <ul>
                @foreach ($errors->all() as $error)
                <li>{{ $error }}</li>
                @endforeach
            </ul>
        </div>
        <br /> 
        @endif
        <form method="post" action="{{ route('contacts.update', $contact->id) }}">
            @method('PATCH') 
            @csrf
            <div class="form-group">

                <label for="first_name">First Name:</label>
                <input type="text" class="form-control" name="first_name" value={{ $contact->first_name }} />
            </div>

            <div class="form-group">
                <label for="last_name">Last Name:</label>
                <input type="text" class="form-control" name="last_name" value={{ $contact->last_name }} />
            </div>

            <div class="form-group">
                <label for="email">Email:</label>
                <input type="text" class="form-control" name="email" value={{ $contact->email }} />
            </div>
            <div class="form-group">
                <label for="city">City:</label>
                <input type="text" class="form-control" name="city" value={{ $contact->city }} />
            </div>
            <div class="form-group">
                <label for="country">Country:</label>
                <input type="text" class="form-control" name="country" value={{ $contact->country }} />
            </div>
            <div class="form-group">
                <label for="job_title">Job Title:</label>
                <input type="text" class="form-control" name="job_title" value={{ $contact->job_title }} />
            </div>
            <button type="submit" class="btn btn-primary">Update</button>
        </form>
    </div>
</div>
@endsection

U: Implementing the Delete Operation

Finally, we’ll proceed to implement the delete operation. Go to the app/Http/Controllers/ContactController.php file, locate the destroy() method and update it accordingly:

    public function destroy($id)
    {
        $contact = Contact::find($id);
        $contact->delete();

        return redirect('/contacts')->with('success', 'Contact deleted!');
    }

You can notice that when we redirect to the /contacts a route in our CRUD API methods, we also pass a success message but it doesn’t appear in our index template. Let’s change that!

Go to the resources/views/contacts/index.blade.php file and add the following code:

<div class="col-sm-12">

  @if(session()->get('success'))
    <div class="alert alert-success">
      {{ session()->get('success') }}  
    </div>
  @endif
</div>

We also need to add a button to takes us to the create form. Add this code below the header:

    <div>
    <a style="margin: 19px;" href="{{ route('contacts.create')}}" class="btn btn-primary">New contact</a>
    </div>  

This is a screenshot of the page after we created a contact:

Laravel 9 REST API CRUD Tutorial Example
Laravel 9 REST API CRUD Tutorial Example

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