PHP常用框架如何处理表单提交与数据验证 PHP常用框架表单处理的基础教程

Form

// routes/web.php
Route::post('/submit', 'MyController@submitForm');

// app/Http/Controllers/MyController.php
public function submitForm(Request $request)
{
    $name = $request->input('name');
    $email = $request->input('email');

    // ... 其他逻辑
}

php artisan make:request MyFormRequest

// app/Http/Requests/MyFormRequest.php
public function rules()
{
    return [
        'name' => 'required|max:255',
        'email' => 'required|email|unique:users,email',
    ];
}

public function submitForm(MyFormRequest $request)
{
    $validatedData = $request->validated(); // 获取验证后的数据

    // ... 使用 $validatedData
}

// src/Form/MyFormType.php
namespace App\Form;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\Extension\Core\Type\EmailType;

class MyFormType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('name', TextType::class)
            ->add('email', EmailType::class);
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            // Configure your form options here
        ]);
    }
}

// src/Controller/MyController.php
use App\Form\MyFormType;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;

class MyController extends AbstractController
{
    /**
     * @Route("/submit", name="submit_form")
     */
    public function submitForm(Request $request): Response
    {
        $form = $this->createForm(MyFormType::class);

        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $data = $form->getData();

            // ... 处理 $data
        }

        return $this->render('my_form.html.twig', [
            'form' => $form->createView(),
        ]);
    }
}

{# templates/my_form.html.twig #}
{{ form(form) }}

// app/Controllers/MyController.php
use CodeIgniter\Controller;

class MyController extends Controller
{
    public function submitForm()
    {
        $validation =  \Config\Services::validation();

        $rules = [
            'name' => 'required|max_length[255]',
            'email' => 'required|valid_email|is_unique[users.email]',
        ];

        if ($this->validate($rules)) {
            // 验证成功
            $name = $this->request->getPost('name');
            $email = $this->request->getPost('email');

            // ... 处理数据
        } else {
            // 验证失败
            $errors = $validation->getErrors();

            // ... 处理错误
        }
    }
}

<?php if (isset($errors)): ?>
    <ul>
        <?php foreach ($errors as $error): ?>
            <li><?= esc($error) ?></li>
        <?php endforeach ?>
    </ul>
<?php endif ?>

// app/Rules/MyCustomRule.php
namespace App\Rules;

use Illuminate\Contracts\Validation\Rule;

class MyCustomRule implements Rule
{
    public function passes($attribute, $value)
    {
        // 自定义验证逻辑
        return $value === 'my_secret';
    }

    public function message()
    {
        return 'The :attribute must be my secret.';
    }
}

public function rules()
{
    return [
        'secret' => ['required', new MyCustomRule()],
    ];
}

enctype="multipart/form-data"

$this->request

public function submitForm(Request $request)
{
    if ($request->hasFile('avatar')) {
        $file = $request->file('avatar');
        $filename = $file->getClientOriginalName();
        $path = $file->store('avatars'); // 存储在 storage/app/avatars 目录下

        // ...
    }
}

@csrf