Laravel 9 Dynamic Dependent Dropdown Using jQuery Ajax

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Inside this article we will see the concept i.e Laravel 9 Dynamic Dependent Dropdown Using jQuery Ajax. Article contains the classified information about Dynamic Dependent Dropdown using ajax.

We will see the complete concept of adding ajax and it’s request in laravel 9 to process data.

For example – Country (Dropdown) >> State (Dropdown) >> City (Dropdown)

This tutorial will help you to understand to handle dynamic dependent dropdowns using jquery ajax in laravel 9. Also it will be super easy to implement in your code as well.

Learn More –

Let’s get started.

Laravel Installation

Open terminal and run this command to create a laravel project.

$ composer create-project laravel/laravel myblog

It will create a project folder with name myblog inside your local system.

To start the development server of laravel –

$ php artisan serve

URL: http://127.0.0.1:8000

Assuming laravel already installed inside your system.

Create Database & Connect

To create a database, either we can create via Manual tool of PhpMyadmin or by means of a mysql command.

CREATE DATABASE laravel_app;

To connect database with application, Open .env file from application root. Search for DB_ and update your details.

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=laravel_app
DB_USERNAME=root
DB_PASSWORD=root

Create Migration

Open project into terminal and run this command to create migration file.

$ php artisan make:migration create_country_state_city_tables

It will create a file –

  • Migration file – 2022_07_15_144958_create_country_state_city_tables.php at /database/migrations folder.

Open Migration file and write this complete code into it.

<?php

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

return new class extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('countries', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name');
            $table->string('sortname');
            $table->string('phonecode');
        });
        Schema::create('states', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name');
            $table->integer('country_id');
        });
        Schema::create('cities', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name');
            $table->integer('state_id');
        });
    }

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

Run Migration

Next,

We need to create tables inside database.

$ php artisan migrate

This command will create tables – countries, states & cities inside database.

Dummy Data for Application

Here, you need to copy mysql query from this given file and run into sql tab of phpmyadmin. First download it and run.

You will see something like this after this test data insertion.

countries” table

states” table

cities” table

Create Controller

Next,

We need to create a controller file.

$ php artisan make:controller DropdownController

It will create a file DropdownController.php inside /app/Http/Controllers folder.

Open DropdownController.php and write this complete code into it.

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use DB;

class DropdownController extends Controller
{
    public function index()
    {
        $countries = DB::table("countries")->pluck("name", "id");
        return view('dropdown', compact('countries'));
    }

    public function getState(Request $request)
    {
        $states = DB::table("states")
            ->where("country_id", $request->country_id)
            ->pluck("name", "id");
        return response()->json($states);
    }

    public function getCity(Request $request)
    {
        $cities = DB::table("cities")
            ->where("state_id", $request->state_id)
            ->pluck("name", "id");
        return response()->json($cities);
    }
}

Create Blade Layout File

Go to /resources/views folder and create a file with name dropdown.blade.php

Open dropdown.blade.php and write this complete code into it.

<!DOCTYPE html>
<html lang="en">

<head>
    <title>Laravel 9 Dynamic Dependent Dropdown using jQuery Ajax</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
</head>

<body>

    <div class="container">
        <h3>Laravel 9 Dynamic Dependent Dropdown using jQuery Ajax</h3>
        <div class="panel panel-primary">
            <div class="panel-heading">Laravel 9 Dynamic Dependent Dropdown using jQuery Ajax</div>
            <div class="panel-body">
                <div class="form-group">
                    <label for="country">Country:</label>
                    <select id="country" name="country" class="form-control">
                        <option value="" selected disabled>Select Country</option>
                        @foreach ($countries as $key => $country)
                            <option value="{{ $key }}"> {{ $country }}</option>
                        @endforeach
                    </select>
                </div>
                <div class="form-group">
                    <label for="state">State:</label>
                    <select name="state" id="state" class="form-control"></select>
                </div>
                <div class="form-group">
                    <label for="city">City:</label>
                    <select name="city" id="city" class="form-control"></select>
                </div>
            </div>
        </div>
    </div>
    <script>
        // when country dropdown changes
        $('#country').change(function() {

            var countryID = $(this).val();

            if (countryID) {

                $.ajax({
                    type: "GET",
                    url: "{{ url('getState') }}?country_id=" + countryID,
                    success: function(res) {

                        if (res) {

                            $("#state").empty();
                            $("#state").append('<option>Select State</option>');
                            $.each(res, function(key, value) {
                                $("#state").append('<option value="' + key + '">' + value +
                                    '</option>');
                            });

                        } else {

                            $("#state").empty();
                        }
                    }
                });
            } else {

                $("#state").empty();
                $("#city").empty();
            }
        });

        // when state dropdown changes
        $('#state').on('change', function() {

            var stateID = $(this).val();

            if (stateID) {

                $.ajax({
                    type: "GET",
                    url: "{{ url('getCity') }}?state_id=" + stateID,
                    success: function(res) {

                        if (res) {
                            $("#city").empty();
                            $("#city").append('<option>Select City</option>');
                            $.each(res, function(key, value) {
                                $("#city").append('<option value="' + key + '">' + value +
                                    '</option>');
                            });

                        } else {

                            $("#city").empty();
                        }
                    }
                });
            } else {

                $("#city").empty();
            }
        });

    </script>
</body>

</html>
      

Add Route

Open web.php from /routes folder and add these route into it.

//...
use App\Http\Controllers\DropdownController;

//...

Route::get('dropdown',[DropdownController::class, 'index']);
Route::get('getState',[DropdownController::class, 'getState'])->name('getState');
Route::get('getCity',[DropdownController::class, 'getCity'])->name('getCity');

Application Testing

Open project to terminal and type the command to start development server

$ php artisan serve

URL: http://127.0.0.1:8000/dropdown

We hope this article helped you to Laravel 9 Dynamic Dependent Dropdown Using jQuery Ajax in a very detailed way.

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