Laravel 9 Custom Validation Error Message Example

By Hardik Savani November 5, 2023 Category : Laravel

Hi Dev,

Now, let's see example of laravel 9 validation custom error messages. we will help you to give example of custom error message laravel 9 validator. you can see laravel 9 custom validation message in controller. this example will help you laravel 9 form validation custom error messages.

Laravel 9 provides a request object to add form validation using it. we will use request validate() for adding validation rules and custom messages. we will use the $errors variable to display error messages. I will show you a very simple step by step example of how to add form validation in the laravel 9 application.

You have to add seconds argument on validate() method with custom error massage array. you can see below solution and full example:

Solution:

$request->validate([
            'name' => 'required',
            'password' => 'required|min:5',
            'email' => 'required|email|unique:users'
        ], [
            'name.required' => 'Name field is required.',
            'password.required' => 'Password field is required.',
            'email.required' => 'Email field is required.',
            'email.email' => 'Email field must be email address.'
        ]);

so, let's see the below example for adding form validation.

Step 1: Install Laravel 9

This step is not required; however, if you have not created the laravel app, then you may go ahead and execute the below command:

composer create-project laravel/laravel example-app

Step 2: Create Controller

In this step, we will create new FormController for adding form validation. in this controller we will add two method call create() and store(). so let's create new controller by following command.

php artisan make:controller FormController

Next, let's update the following code to that file.

app/Http/Controllers/FormController.php

<?php
  
namespace App\Http\Controllers;
  
use Illuminate\Http\Request;
use App\Models\User;
  
class FormController extends Controller
{
    /**
     * Show the application dashboard.
     *
     * @return \Illuminate\Http\Response
     */
    public function create()
    {
        return view('createUser');
    }
      
    /**
     * Show the application dashboard.
     *
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
  
        $validatedData = $request->validate([
                'name' => 'required',
                'password' => 'required|min:5',
                'email' => 'required|email|unique:users'
            ], [
                'name.required' => 'Name field is required.',
                'password.required' => 'Password field is required.',
                'email.required' => 'Email field is required.',
                'email.email' => 'Email field must be email address.'
            ]);
    
        $validatedData['password'] = bcrypt($validatedData['password']);
        $user = User::create($validatedData);
          
        return back()->with('success', 'User created successfully.');
    }
}

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Step 3: Create Routes

Furthermore, open routes/web.php file and add the routes to manage GET and POST requests for call view and adding form validation.

routes/web.php

<?php
  
use Illuminate\Support\Facades\Route;
  
use App\Http\Controllers\FormController;
  
/* 
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
*/
  
Route::get('user/create', [ FormController::class, 'create' ]);
Route::post('user/create', [ FormController::class, 'store' ]);

Step 4: Create Blade File

now here we will create createUser.blade.php file and here we will create bootstrap simple form with error validation message. So, let's create following file:

resources/views/createUser.blade.php

<!DOCTYPE html>
<html>
<head>
    <title>Laravel 9 Form Validation Example - ItSolutionStuff.com</title>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
    <div class="container">
    
        <h1>Laravel 9 Form Validation Example - ItSolutionStuff.com</h1>
       
        @if(Session::has('success'))
        <div class="alert alert-success">
            {{ Session::get('success') }}
            @php
                Session::forget('success');
            @endphp
        </div>
        @endif
    
        <!-- Way 1: Display All Error Messages -->
        @if ($errors->any())
            <div class="alert alert-danger">
                <strong>Whoops!</strong> There were some problems with your input.<br><br>
                <ul>
                    @foreach ($errors->all() as $error)
                        <li>{{ $error }}</li>
                    @endforeach
                </ul>
            </div>
        @endif
       
        <form method="POST" action="{{ url('user/create') }}">
      
            {{ csrf_field() }}
      
            <div class="mb-3">
                <label class="form-label" for="inputName">Name:</label>
                <input 
                    type="text" 
                    name="name" 
                    id="inputName"
                    class="form-control @error('name') is-invalid @enderror" 
                    placeholder="Name">
  
                <!-- Way 2: Display Error Message -->
                @error('name')
                    <span class="text-danger">{{ $message }}</span>
                @enderror
            </div>
     
            <div class="mb-3">
                <label class="form-label" for="inputPassword">Password:</label>
                <input 
                    type="password" 
                    name="password" 
                    id="inputPassword"
                    class="form-control @error('password') is-invalid @enderror" 
                    placeholder="Password">
  
                <!-- Way 3: Display Error Message -->
                @if ($errors->has('password'))
                    <span class="text-danger">{{ $errors->first('password') }}</span>
                @endif
            </div>
       
            <div class="mb-3">
                <label class="form-label" for="inputEmail">Email:</label>
                <input 
                    type="text" 
                    name="email" 
                    id="inputEmail"
                    class="form-control @error('email') is-invalid @enderror" 
                    placeholder="Email">
  
                @error('email')
                    <span class="text-danger">{{ $message }}</span>
                @endif
            </div>
     
            <div class="mb-3">
                <button class="btn btn-success btn-submit">Submit</button>
            </div>
        </form>
    </div>
</body>
</html>

Run Laravel App:

All the required steps have been done, now you have to type the given below command and hit enter to run the Laravel app:

php artisan serve

Now, Go to your web browser, type the given URL and view the app output:

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http://localhost:8000/user/create

Output:

I hope it can help you...

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