Laravel 5.5 AJAX : Create Like & Dislike System using AJAX in Laravel 5.5

Laravel 5.5 and Ajax tutorial for beginners : How to create simple Like and Dislike app like social medias using Ajax Request in laravel 5.5, this lesson will show you how to build social media likes and dislikes system.

Previews lessons, we have create one project named with laravel admin project, before doing next lessons, you must have this project before, please read How to create Advanced Admin Panel in Laravel 5.5

Video Tutorial Like and Dislike System with Ajax

Just watch this video and don't forget to like, share and subscribe our channel for more awesome videos every day.

Source Code

First, make sure you have installed new laravel project laraveladmin

composer create-project --prefer-dist laravel/laravel laraveladmin

Create Connection

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=sectorcode
DB_USERNAME=root
DB_PASSWORD=null

Create Laravel Authentication

php artisan make:auth

Create Model and Migration

php artisan make:model Post -m
php artisan make:model Like -m

Post migration

        Schema::create('posts', function (Blueprint $table) {
            $table->increments('id');
            $table->string('title');
            $table->text('body');
            $table->timestamps();
            $table->integer('user_id'); //on user table
        });

Like migration

        Schema::create('likes', function (Blueprint $table) {
            $table->increments('id');
            $table->timestamps();
            $table->integer('user_id'); // on user table
            $table->integer('post_id'); // on post table
            $table->boolean('like');
        });

Run Migration

php artisan migrate

Model

Post Model

<?php

namespace App;

use IlluminateDatabaseEloquentModel;

class Post extends Model
{
    public function user(){
      return $this->belongsTo('AppUser');
    }
    
    public function likes(){
      return $this->belongsTo('AppLike');
    }
}

Like Model

<?php

namespace App;

use IlluminateDatabaseEloquentModel;

class Like extends Model
{
    public function user(){
      return $this->belongsTo('AppUser');
    }
    public function post(){
      return $this->belongsTo('AppPost');
    }
}

User Model

<?php

namespace App;

use IlluminateNotificationsNotifiable;
use IlluminateFoundationAuthUser as Authenticatable;

class User extends Authenticatable
{
    use Notifiable;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name', 'email', 'password',
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password', 'remember_token',
    ];

    public function likes(){
      return $this->hasMany('AppLike');
    }
    public function post(){
      return $this->hasMany('AppPost');
    }
}

Post Controller

<?php

namespace AppHttpControllers;

use IlluminateHttpRequest;

use AppLike;
use AppPost;
use IlluminateSupportFacadesAuth;
use IlluminateSupportFacadesSession;

class PostController extends Controller
{
    public function index(){
      $posts = Post::orderBy('created_at', 'desc')->get();
        return view('post.index', ['posts' => $posts]);
    }
    public function postLikePost(Request $request)
       {
           $post_id = $request['postId'];
           $is_like = $request['isLike'] === 'true';
           $update = false;
           $post = Post::find($post_id);
           if (!$post) {
               return null;
           }
           $user = Auth::user();
           $like = $user->likes()->where('post_id', $post_id)->first();
           if ($like) {
               $already_like = $like->like;
               $update = true;
               if ($already_like == $is_like) {
                   $like->delete();
                   return null;
               }
           } else {
               $like = new Like();
           }
           $like->like = $is_like;
           $like->user_id = $user->id;
           $like->post_id = $post->id;
           if ($update) {
               $like->update();
           } else {
               $like->save();
           }
           return null;
       }
}

Routes

Route::get('/post', 'PostController@index');
Route::post('/like','PostController@postLikePost')->name('like');

Vews

In resources/views/ create new folder named with "post", and in the post folder we will store all post data into index.blade.php

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Like & Dislike</title>
    <!-- Bootstrap -->
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/css/font-awesome.min.css">
    <!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
    <!--[if lt IE 9]>
      <script src="https://oss.maxcdn.com/libs/html5shiv/3.7.2/html5shiv.js"></script>
      <script src="https://oss.maxcdn.com/libs/respond.js/1.4.2/respond.min.js"></script>
    <![endif]-->
  </head>
  <body>
   <div class="container">
     <div class="blog-header">
       <h2>Like & Dislike System</h2>
       <p>Using ajax to like and disklike system in laravel 5.5</p>
       <hr>
     </div>

     <div class="row">
       <div class="col-sm-8">
         <div class="blog-post">
           @foreach ($posts as $post)
             <div class="post" data-postid="{{ $post->id }}">
             <a href="#"><h3>{{$post->title}}</h3></a>
             <h6>Posted on {{$post->created_at}} by {{$post->user->name}}</h6>
             <p>{{$post->body}}</p>
             <div class="interaction">
               <a href="#" class="btn btn-xs btn-warning like">{{ Auth::user()->likes()->where('post_id', $post->id)->first() ? Auth::user()->likes()->where('post_id', $post->id)->first()->like == 1 ? 'You like this post' : 'Like' : 'Like'  }}</a> |
               <a href="#" class="btn btn-xs btn-danger like">{{ Auth::user()->likes()->where('post_id', $post->id)->first() ? Auth::user()->likes()->where('post_id', $post->id)->first()->like == 0 ? 'You don't like this post' : 'Dislike' : 'Dislike'  }}</a>
            </div>
             <hr>
           </div>
           @endforeach
         </div><!-- /.blog-post -->
         <nav>
           <ul class="pager">
             <li><a href="#">Previous</a></li>
             <li><a href="#">Next</a></li>
           </ul>
         </nav>
       </div><!-- /.blog-main -->
     </div><!-- /.row -->
     <div class="footer">
       <p>Copyright © 2018 <a href="#">Sector Code</a></p>
       <p>
         <a href="#">Back to top</a>
       </p>
     </div>
   </div><!-- /.container -->
    <!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
    <!-- Include all compiled plugins (below), or include individual files as needed -->
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
    <script src="{{ asset('/js/like.js') }}"></script>
    <script>
      var token = '{{ Session::token() }}';
      var urlLike = '{{ route('like') }}';
    </script>
  </body>
</html>

Java Script Files

In Public/Js/ we will create new file named with "like.js"

var postId = 0;
$('.like').on('click', function(event) {
    event.preventDefault();
    postId = event.target.parentNode.parentNode.dataset['postid'];
    var isLike = event.target.previousElementSibling == null;
    $.ajax({
        method: 'POST',
        url: urlLike,
        data: {isLike: isLike, postId: postId, _token: token}
    })
        .done(function() {
            event.target.innerText = isLike ? event.target.innerText == 'Like' ? 'You like this post' : 'Like' : event.target.innerText == 'Dislike' ? 'You don't like this post' : 'Dislike';
            if (isLike) {
                event.target.nextElementSibling.innerText = 'Dislike';
            } else {
                event.target.previousElementSibling.innerText = 'Like';
            }
        });
});

More Laravel Video Tutorial

See you next lessons and happy coding guys ...