Phalcon 3:使用\Phalcon\Mvc\Model\Validator验证表单数据

Question

由于Phalcon的最新版本已经发布，文档中提供的示例似乎无法正常工作。

首先，我使用DevTools在命令行使用phalcon model User创建了一个新的模型。

然后，修改validation()函数。我的models\User.php文件：

use Phalcon\Mvc\Model\Validator\Email as Email;
use Phalcon\Mvc\Model\Validator\Uniqueness as Uniqueness;
use Phalcon\Mvc\Model\Validator\StringLength as StringLength;

class User extends \Phalcon\Mvc\Model
{
    public function validation()
    {
        $this->validate(
            new Email(
                array(
                    'field' => 'email',
                    'message' => 'Please enter a valid email'
                )
            )
        );

        $this->validate(
            new Uniqueness(
                array(
                    'field' => 'email',
                    'message' => 'Your email is already in use'
                )
            )
        );

        $this->validate(
            new StringLength(
                array(
                    'field' => 'password',
                    'min' => 4,
                    'max' => 30,
                    'minMessage' => 'Your password must be at least 4 characters',
                    'maxMessage' => 'Your password must be less than 30 characters'
                )
            )
        );

        if ($this->validationHasFailed() == true) {
            return false;
        }

        return true;
    }
}

但是，这会引发以下错误：

可捕获的致命错误:传递给C:\xampp\htdocs\app\models\User.php \Mvc\Model：：()的参数1必须实现接口Phalcon\ValidationInterface，Phalcon\Mvc\Model\的实例在27上给出

这是什么意思？我认为Phalcon\Validation和Phalcon\Mvc\Model\Validator完全不同(后者提供了更多的功能)？

Answer 1

从Phalcon3.0开始，Phalcon\Mvc\Model\Validation就不再支持Phalcon\Validation了。这样做是为了减少代码库，因为这两个组件都在执行类似的工作。下面你可以找到一些需要改变的例子。

旧方式：

namespace Invo\Models;

use Phalcon\Mvc\Model;
use Phalcon\Mvc\Model\Validator\Email as EmailValidator;
use Phalcon\Mvc\Model\Validator\Uniqueness as UniquenessValidator;

class Users extends Model
{
    public function validation()
    {
        $this->validate(
            new EmailValidator(
                [
                    'field' => 'email',
                ]
            )
        );

        $this->validate(
            new UniquenessValidator(
                [
                    'field'   => 'username',
                    'message' => 'Sorry, That username is already taken',
                ]
            )
        );

        if ($this->validationHasFailed() == true) {
            return false;
        }
    }
}

新途径：

namespace Invo\Models;

use Phalcon\Mvc\Model;
use Phalcon\Validation;
use Phalcon\Validation\Validator\Email as EmailValidator;
use Phalcon\Validation\Validator\Uniqueness as UniquenessValidator;

class Users extends Model
{
    public function validation()
    {
        $validator = new Validation();

        $validator->add(
            'email', //your field name
            new EmailValidator([
                'model' => $this,
                'message' => 'Please enter a correct email address'
            ])
        );

        $validator->add(
            'username',
            new UniquenessValidator([
                'model' => $this,
                'message' => 'Sorry, That username is already taken',
            ])
        );

        return $this->validate($validator);
    }
}

更多的信息和补丁说明可以在博客中找到。