Laravel
852
Shubham Kushwah
13-08-2020
Laravel ajax dynamic dependent dropdown list. In this post, i will sho you how to create dynamic subscategories dependent dropdown list on selected category dropdown using jQuery in laravel.
Follow the below simple and easy steps to create ajax dynamic dependent dropdown using jQuery in laravel app:
First of all, Open your terminal and run the following command to download or install laravel fresh new setup:
composer create-project --prefer-dist laravel/laravel blog
After that, open ".env" file and update the database name, username, and password in the env file:
DB_CONNECTION=mysql DB_HOST=127.0.0.1 DB_PORT=3306 DB_DATABASE=Enter_Your_Database_Name DB_USERNAME=Enter_Your_Database_Username DB_PASSWORD=Enter_Your_Database_Password
In this step, you need to create category table migration and create category Modal by using the following command:
php artisan make:model Category -m
Navigate database/migrations/ and open create_categorys_table.php file. Then update the following code into this file:
use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;
class CreateCategoriesTable extends Migration
{
/**
* Run the migrations.
*
* @return void
*/
public function up()
{
Schema::create('categories', function (Blueprint $table) {
$table->id();
$table->string('name');
$table->unsignedInteger('parent_id')->nullable();
$table->timestamps();
});
}
/**
* Reverse the migrations.
*
* @return void
*/
public function down()
{
Schema::dropIfExists('categories');
}
}
Now run the following command
php artisan migrate
Next navigate to app and open Category.php model file. Then update the following code into your app/Category.php file as follow:
namespace App;
use Illuminate\Database\Eloquent\Model;
class Category extends Model
{
protected $guarded = [];
public function subcategories(){
return $this->hasMany('App\Category', 'parent_id');
}
}
Next step, Navigate to "routes/web.php" file and add the following routes into your web.php file:
Route::get('cat', '[email protected]');
Route::post('subcat', '[email protected]');
Next step, open your terminal and run the following command:
php artisan make:controller CategoryController
This command will create CategoryController by the artisan command.
Next, Navigate to app/http/controller and open CategoryController.php.Then update the following methods into your controller file:
<?php
namespace App\Http\Controllers;
use App\Category;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Route;
class CategoryController extends Controller
{
public function index(Request $request)
{
$categoris = Category::where('parent_id',0)->get();
return view('category',["categoris" => $categoris]);
}
public function subCat(Request $request)
{
$parent_id = $request->cat_id;
$subcategories = Category::where('id',$parent_id)
->with('subcategories')
->get();
return response()->json([
'subcategories' => $subcategories
]);
}
}
In this step, you need to create one blade views file for rendering data on it. So navigate to resources/views folder and create the blade view as following:
Create first file name category.blade.php and update the following code into it:
<html lang="{{ app()->getLocale() }}">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Laravel, jquery ajax categories and subcategories, select dropdown</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" rel="stylesheet">
<meta name="csrf-token" content="{{ csrf_token() }}" />
</head>
<body>
<div class="container" style="margin-top: 50px; margin-left: 300px">
<div class="row">
<div class="col-lg-6">
<form action="">
<h4>Category</h4>
<select class="browser-default custom-select" name="category" id="category">
<option selected>Select category</option>
@foreach ($categoris as $item)
<option value="{{ $item->id }}">{{ $item->name }}</option>
@endforeach
</select>
<h4>Subcategory</h4>
<select class="browser-default custom-select" name="subcategory" id="subcategory">
</select>
</form>
</div>
</div>
</div>
<script type="text/javascript">
$.ajaxSetup({
headers: {
'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
}
});
$(document).ready(function () {
$('#category').on('change',function(e) {
var cat_id = e.target.value;
$.ajax({
url:"{{ route('subcat') }}",
type:"POST",
data: {
cat_id: cat_id
},
success:function (data) {
$('#subcategory').empty();
$.each(data.subcategories[0].subcategories,function(index,subcategory){
$('#subcategory').append('<option value="'+subcategory.id+'">'+subcategory.name+'</option>');
})
}
})
});
});
</script>
</body>
</html>
In this step, use the following php artisan serve command to start your server locally:
php artisan serve
http://localhost:8000/cat
In this tutorial, i have shown you how to create ajax dynamic depedent dropdown list in laravel.