Question

如果我有一个实现MyCustomRule的自定义规则类（Illuminate\Contracts\Validation\Rule），有没有一种快速的方法为规则注册别名，以便可以将其称为字符串？例如

public function rules()
{
    return [
        'email' => 'required|my_custom_rule'
    ];
}

我不想在AppServiceProvider中重复自己。

Answer 1

在我的自定义规则中，我添加了一个返回别名的__toString()方法。我还允许将可选的$parameters和$validator传递给passes方法。使用Illuminate \ Contracts \ Validation \ Rule;

class MyCustomRule implements Rule
{
    protected $alias = 'my_custom_rule';

    public function __toString()
    {
       return $this->alias;
    }

    public function passes($attribute, $value, $parameters = [], $validator = null)
    {
        // put your validation logic here
        return true;
    }

    public function message()
    {
        return 'Please enter a valid email address';
    }
}

然后，我在AppServiceProvider中创建了一个方法，以同时使用其别名注册所有规则。

use Illuminate\Support\Facades\Validator;
use Illuminate\Support\ServiceProvider;

class AppServiceProvider extends ServiceProvider
{

    protected $rules = [
        \App\Rules\MyCustomRule::class,
        // ... other rules here
    ];

    public function boot()
    {
        $this->registerValidationRules();
        // ... do other stuff here
    }

    private function registerValidationRules()
    {
        foreach($this->rules as $class ) {
            $alias = (new $class)->__toString();
            if ($alias) {
                Validator::extend($alias, $class .'@passes');
            }
        }
    }
}

Laravel中自定义验证规则的别名？

1 个答案: