How to use Hyperf framework for form validation

How to use the Hyperf framework for form validation

Introduction:
With the development of web applications, form validation has become the key to ensuring the accuracy and security of data. important link. As a high-performance PHP development framework, the Hyperf framework provides powerful form validation functions. This article will introduce how to use the Hyperf framework for form validation and provide specific code examples.

1. Install the Hyperf framework:

1. Use Composer to install:

   composer create-project hyperf/hyperf-skeleton

2. After the installation is complete, you can use the following command Start the Hyperf framework:

   php bin/hyperf.php start

2. Create verification rules:

1. Create a new validator class in the app/Request directory, such as Create a RegisterRequest.php file:

   namespace AppRequest;
   
   use HyperfValidationRequestFormRequest;
   
   class RegisterRequest extends FormRequest
   {
    public function rules()
    {
        return [
            'name' => 'required|string|max:255',
            'email' => 'required|string|email|max:255|unique:users',
            'password' => 'required|string|min:8|confirmed',
        ];
    }
   }

2. In the above code, we define three verification rules, namely name, email and password.

3. Use the validator:

1. Use the validator in the controller:

   namespace AppController;
   
   use AppRequestRegisterRequest;
   
   class UserController extends AbstractController
   {
    public function register(RegisterRequest $request)
    {
        // 验证通过，执行注册逻辑
        $name = $request->input('name');
        $email = $request->input('email');
        $password = $request->input('password');
        
        // 执行注册逻辑...
        
        return '注册成功';
    }
   }

2. above In the code, we use the RegisterRequest validator and receive the verified request data in the register method, and then execute the corresponding registration logic.

4. Error handling:

1. In the above code, if the request data does not comply with the verification rules, a ValidationException will be thrown. We can catch this exception and handle the error:

   use HyperfValidationValidationException;
   
   try {
    $request->validated();
    // 执行注册逻辑...
   } catch (ValidationException $e) {
    // 验证失败，返回错误信息
    $errors = $e->validator->errors()->toArray();
    return $errors;
   }

2. In the above code, we use the validated() method to perform form validation. If the validation fails, a ValidationException will be thrown. We can obtain specific error information through the $e->validator->errors()->toArray() method and return it to the front end.

Summary:
Through the introduction of this article, we learned how to use the Hyperf framework for form validation. First, you need to install the Hyperf framework, then create verification rules, then use the validator in the controller, and handle the verification pass and verification failure situations accordingly. I hope this article can be helpful to the form validation function of the Hyperf framework.

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