Laravel 12 Form Validation Tutorial Example

By Hardik Savani March 6, 2025 Category : Laravel

In this example, I will show you how to add form validation in laravel 12 application.

Laravel 12 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 12 application.

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

laravel 12 form validation

Step for Laravel 12 Form Validation with Error Message

  • Step 1: Install Laravel 12
  • Step 2: Create Controller
  • Step 3: Create Routes
  • Step 4: Create Blade File
  • Run Laravel App

Step 1: Install Laravel 12

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

laravel new example-app

Step 2: Create Controller

In this step, we will create a new `FormController` for adding form validation. In this controller, we will add two methods called `create()` and `store()`. So let's create a new controller using the following command.

php artisan make:controller FormController

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

app/Http/Controllers/FormController.php

<?php
      
namespace App\Http\Controllers;
      
use Illuminate\Http\Request;
use App\Models\User;
use Illuminate\View\View;
use Illuminate\Http\RedirectResponse;
     
class FormController extends Controller
{
    /**
     * Show the application dashboard.
     *
     * @return \Illuminate\Http\Response
     */
    public function create(): View
    {
        return view('createUser');
    }
          
    /**
     * Show the application dashboard.
     *
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request): RedirectResponse
    {
        $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 calling views and adding form validation.

routes/web.php


<?php
  
use Illuminate\Support\Facades\Route;
  
use App\Http\Controllers\FormController;
  
Route::get('users/create', [ FormController::class, 'create' ]);
Route::post('users/create', [ FormController::class, 'store' ])->name('users.store');

Step 4: Create Blade File

Now, here we will create createUser.blade.php file and here we will create a bootstrap simple form with error validation messages. So, let's create the following file:

resources/views/createUser.blade.php


<!DOCTYPE html>
<html>
<head>
    <title>Laravel 12 Form Validation Example - ItSolutionStuff.com</title>
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet" crossorigin="anonymous">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css" />
</head>
<body>
<div class="container">
  
    <div class="card mt-5">
        <h3 class="card-header p-3"><i class="fa fa-star"></i> Laravel 12 Form Validation Example - ItSolutionStuff.com</h3>
        <div class="card-body">
            @session('success')
                <div class="alert alert-success" role="alert"> 
                    {{ $value }}
                </div>
            @endsession
          
            <!-- 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="{{ route('users.store') }}">
            
                {{ 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"><i class="fa fa-save"></i> Submit</button>
                </div>
            </form>
        </div>
    </div>       
          
</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/users/create

Output:

I hope it can help you...

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