In this article, we will see a dependent dropdown in laravel 9 vue js. Here, we will learn how to create a dependent dropdown in laravel 9 vue js 3. Also, we will create a dependent dropdown for country and city. Select the country dependent on the display state name. Also, you can create dependent dropdowns in laravel 6, laravel 7, and laravel 8.

    So, let's see the laravel 9 vue js dependent dropdown, dynamic dropdown in laravel vuejs, and laravel 9 dependent dropdown.

    In this step, we will install laravel 9 using the following command.

composer create-project --prefer-dist laravel/laravel laravel9_vue_js_dropdown

    Now, we will configure the database into the .env file.

DB_CONNECTION=mysql 
DB_HOST=127.0.0.1 
DB_PORT=3306 
DB_DATABASE=laravel9_vuejs_dropdown
DB_USERNAME=root
DB_PASSWORD=root

    In this step, we will create migration and model using the following command.

php artisan make:migration create_countries_states_table

    Migration:

<?php

use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
class CreateCountriesStatesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('countries', function (Blueprint $table) {
            $table->bigIncrements('id');
            $table->string('name');
            $table->timestamps();
        });
        Schema::create('states', function (Blueprint $table) {
            $table->bigIncrements('id');
            $table->integer('country_id');
            $table->string('name');
            $table->timestamps();
        });
    }
    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('countries');
        Schema::dropIfExists('states');
    }
}

    After that, we will migrate the table to the database using the following command.

php artisan migrate

     Now, we will create a Country and State Model using the following command.

php artisan make:model Country
php artisan make:model State

    In this step, we will install npm and vue js using the following command.

npm install

npm install vue-axios --save

npm run watch

    Now, we will add routes to the web.php file.

    routes/web.php

<?php

use App\Http\Controllers\CountryStateController;
 
Route::get('get_countries', [CountryStateController::class, 'getCountries']);
Route::post('get_states', [CountryStateController::class, 'getStates']);

    In this step, we will create a CountryStateController file. So, add the below code to that file.

    app/Http/Controllers/CountryStateController.php

<?php

namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Models\Country;
use App\Models\State;
class CountryStateController extends Controller
{
    /**
     * Retrieve countries data
     *
     * @return void
     */
    public function getCountries()
    {
        $data = Country::get();
        return response()->json($data);
    }
    /**
     * Retrieve states data
     *
     */
    public function getStates(Request $request)
    {
        $data = State::where('country_id', $request->country_id)->get();
        return response()->json($data);
    }
}

    Now, we will create DropdownComponent.vue to the resources/assets/js/components folder.

<template>
    <div class="container">
        <div class="text-center" style="margin: 20px 0px 20px 0px;">
            <span class="text-secondary">Dependent Dropdown In Laravel 9 Vue JS - Websolutionstuff</span>
        </div>
        <div class="row justify-content-center" style="margin: 20px 0px 20px 0px;">
            <div class="col-md-8">
                <div class="card">
                    <div class="card-body">
                        <div class="form-group">
                            <label>Select Country:</label>
                            <select class='form-control' v-model='country' @change='getStates()'>
                                <option value='0' >Select Country</option>
                                <option v-for='data in countries' :value='data.id'>{{ data.name }}</option>
                            </select>
                        </div>
                        <div class="form-group">
                            <label>Select State:</label>
                            <select class='form-control' v-model='state'>
                                <option value='0' >Select State</option>
                                <option v-for='data in states' :value='data.id'>{{ data.name }}</option>
                            </select>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</template>
<script>
    export default {
        data(){
            return {
                country: 0,
                countries: [],
                state: 0,
                states: []
            }
        },
        methods:{
            getCountries: function(){
                axios.get('/get_countries')
                    .then(function (response) {
                        this.countries = response.data;
                    }.bind(this));
            },
            getStates: function() {
                axios.get('/get_states',{
                    params: {
                        country_id: this.country
                    }
                }).then(function(response){
                    this.states = response.data;
                }.bind(this));
            }
        },
        created: function(){
            this.getCountries()
        }
    }
</script>

    Now, we will include DropdownComponent.vue in the app.js file.

    resources/assets/js/app.js

require('./bootstrap');

window.Vue = require('vue');

Vue.component('dropdown-component', require('./components/DropdownComponent.vue').default);

const app = new Vue({
    el: '#app',
});

    In this step, we will create an app.blade.php file. So, add the below code to that file.

    resources/views/layouts/app.blade.php

<!doctype html>
<html lang="{{ str_replace('_', '-', app()->getLocale()) }}">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta name="csrf-token" value="{{ csrf_token() }}"/>
    <title>Laravel 9 Vue JS Dependent Dropdown - Websolutionstuff</title>
    <link href="https://fonts.googleapis.com/css?family=Nunito:200,600" rel="stylesheet" type="text/css">
    <link href="{{ mix('css/app.css') }}" type="text/css" rel="stylesheet"/>
</head>
<body>
<div id="app">
    <dropdown-component></dropdown-component>
</div>
<script src="{{ mix('js/app.js') }}" type="text/javascript"></script>
</body>
</html>

    Now, we will run the laravel 9 vue js dependent dropdown application using the following command.

php artisan serve

npm run dev
or
npm run watch

    Output:

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