First, define GET and POST routes for form display and submission. Then, create a Blade form with @csrf for security. Next, handle the request in a controller using validation rules. Finally, display success messages or validation errors in the template using Laravel’s built-in session and error handling.

Handling form submissions in Laravel is straightforward thanks to its built-in features for routing, validation, and request handling. Here’s how you can do it effectively.

Define the Route

Laravel uses routes to direct HTTP requests to the appropriate controller or closure. For form handling, you typically need a GET route to display the form and a POST route to process the submission.

Example:

Route::get('/contact', [ContactController::class, 'showForm']);
Route::post('/contact', [ContactController::class, 'handleSubmit']);

Create and Handle the Form

In your Blade template, use Laravel's Blade directives like @csrf to include a CSRF token, which protects against cross-site request forgery.

Example form:

<form method="POST" action="/contact">
  @csrf
  <input type="text" name="name" />
  <input type="email" name="email" />
  <button type="submit">Send</button>
</form>

Process Submission in Controller

In your controller, receive the incoming request and validate the data before processing.

Example:

public function handleSubmit(Request $request)
{
    $validated = $request->validate([
        'name' => 'required|string|max:100',
        'email' => 'required|email',
    ]);

    // Process the data (e.g., save to database, send email)
    
    return redirect()->back()->with('success', 'Form submitted!');
}

Handle Validation Errors and Feedback

If validation fails, Laravel automatically redirects back with errors. In your Blade template, check for these errors and display them.

Example in Blade:

@if ($errors->any())
  <div class="alert alert-danger">
    <ul>
      @foreach ($errors->all() as $error)
        <li>{{ $error }}</li>
      @endforeach
    </ul>
  </div>
@endif

@if (session('success'))
  <div class="alert alert-success">
    {{ session('success') }}
  </div>
@endif

Basically just route, validate, process, and respond. Laravel handles the heavy lifting so you don’t have to worry about raw POST data or CSRF protection manually.

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