Submitting Form Data and Validation in Laravel

Submitting Form Data and Validation in Laravel — a practical guide to Laravel form validation with clear examples you can reuse in real projects.

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Short description

Laravel makes form handling safe with CSRF tokens and powerful validation rules before you save data.

Blade form

<form method="POST" action="{{ route('posts.store') }}">
    @csrf
    <input type="text" name="title" value="{{ old('title') }}">
    @error('title') <span>{{ $message }}</span> @enderror

    <textarea name="body">{{ old('body') }}</textarea>
    @error('body') <span>{{ $message }}</span> @enderror

    <button type="submit">Save</button>
</form>

Validate in controller

public function store(Request $request)
{
    $validated = $request->validate([
        'title' => ['required', 'string', 'max:255'],
        'body'  => ['required', 'string', 'min:10'],
    ]);

    Post::create($validated);

    return redirect()->route('posts.index')->with('success', 'Post created');
}

Form Request class

php artisan make:request StorePostRequest

public function rules(): array
{
    return [
        'title' => ['required', 'max:255'],
        'body'  => ['required'],
    ];
}

public function store(StorePostRequest $request)
{
    Post::create($request->validated());
    return back()->with('success', 'Saved');
}