Laravel 9 Vue Js Dependent DropDown Tutorial with Example

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Laravel 9 Vue js dependent dropdown example; Through this tutorial, we will learn how to make dependent dropdown with Vue js components in laravel.

Laravel 9 Vue Js Dependent DropDown Tutorial with Example

Follow the below steps and build dependent dropdown with Vue.js and Laravel 9:

Step 1: Install Laravel 9 App
Step 2: Connecting App to Database
Step 3: Create Migration Files
Step 4: Create Models
Step 5: NPM Configuration
Step 6: Add Routes
Step 7: Create Controller By Command
Step 8: Create Vue Component
Step 9: Initialize Vue Components
Step 10: Run Development Server

Step 1: Install Laravel 9 App

In this step, we need to install laravel latest application setup, So open terminal OR command prompt and execute the following command:

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

Step 2: Connecting App to Database

After successfully install laravel app, Go to project .env file and set up database credentials:

 DB_CONNECTION=mysql 
 DB_HOST=127.0.0.1 
 DB_PORT=3306 
 DB_DATABASE=here database name here
 DB_USERNAME=here database username here
 DB_PASSWORD=here database password here

Step 3: Create Migration Files

Next step, we need to run the following command:

php artisan make:migration create_countries_states_table

Now open create_countries_states_table.php migration file from database>migrations and replace up() function with the following code:

<?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');
    }
}

Next, migrate the table using the below command:

php artisan migrate

Step 4: Create Models

Use the following laravel artisan commands to build country and state model inside laravel app:

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

Step 5: NPM Configuration

We need to setup Vue and install Vue dependencies using NPM. So run the following command on command prompt:

Install all Vue dependencies:

npm install

To calling Laravel API routes. we need to install vue-axios. So use run the following command on command prompt:

npm install vue-axios --save

After installing all dependencies run this command:

npm run watch

Step 6: Add Routes

Next step, go to routes folder and open web.php file and add the following routes into file:

routes/web.php

use App\Http\Controllers\CountryStateController;

Route::get('get_countries', [CountryStateController::class, 'getCountries']);
Route::post('get_states', [CountryStateController::class, 'getStates']);

Step 7: Create Controller By Command

Next step, open command prompt and run the following command to create a controller by an artisan:

php artisan make:controller CountryStateController

After that, go to app\Http\Controllers and open CountryStateController.php file. Then update the following code into CountryStateController.php file:

<?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);
    }
}

Step 8: Create Vue Component

Next step, go to resources/assets/js/components folder and create a filed called DropdownComponent.vue.

And update the following code into DropdownComponent.vue. components file:

<template>
    <div class="container">
        <div class="text-center" style="margin: 20px 0px 20px 0px;">
            <span class="text-secondary">Laravel 9 vue.js Dependent Dropdown Example</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 open resources/assets/js/app.js and include the FileUpload.vue component like this:app.js

require('./bootstrap');
window.Vue = require('vue');
Vue.component('dropdown-component', require('./components/DropdownComponent.vue').default);
const app = new Vue({
    el: '#app',
});

Step 9: Initialize Vue Components

In this step, navigate to resources/views and create one folder named layouts. Inside this folder create one blade view file named app.blade.php file.

Next, Navigate to resources/views/layouts and open app.blade.php file. Then update the following code into app.blade.php file as follow:

<!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>How to make dependent dropdown with Vue. js and Laravel
 - Tutsmake.com</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>