验证Laravel 4错误中的数组表单字段 [英] Validation of array form fields in laravel 4 error

问题描述

我们如何验证数组的表单字段?看一下下面的代码

How can we validate form fields that are arrays? Take a look at the following code

UserPhone型号:

UserPhone Model:

 public static $rules= array(
    'phonenumber'=>'required|numeric',
    'isPrimary'=>'in:0,1'
)
...........

UserController:

UserController:

$validation = UserPhone::validate(Input::only('phonenumber')));


    if($validation->passes())
      {
         $allInputs = Input::only('phonenumber','tid');
         $loopSize = sizeOf($allInputs);

         for($i=0;$i<$loopSize;$i++)
         {

         $phone = UserPhone::find($allInputs['tid'][$i]);
         $phone->phonenumber = $allInputs['phonenumber'][$i];
         $phone->save();

        }

     return Redirect::to('myprofile')->with('message','Update OK');

  }
  else
  {
     return Redirect::to('editPhone')->withErrors($validation);

  } 

}

$validation来自扩展了Eloquent的BaseModel.

the $validation comes from a BaseModel which extends Eloquent.

我认为:

 <?php $counter=1; ?>
          @foreach($phones as $thephone)

           <section class="col col-12">
              <label class="label">Phone Number {{$counter++}}</label>
              <label class="input">
              <i class="icon-append icon-phone"></i>
                 {{Form::text('phonenumber[]',$thephone->phonenumber)}}
                 {{Form::hidden('tid[]',$thephone->id)}}
              </label>
            </section>
          @endforeach

一切正常，我可以在更新表格"中找到所有想要的电话号码，但是我无法更新模型，因为验证失败并显示消息电话号码必须是数字".

Everything is working fine and I get all the phone numbers I want in the Update Form, but I cannot update the model because the validation fails with the message "Phonenumber must be a number".

我知道没有简单的解决方案来验证数组表单字段，因此我尝试扩展Validator类，但没有成功.

I know that there is not a simple solution for validating array form fields and I tried to extend the validator class but with no success.

如何验证此类字段?

推荐答案

这是我使用的解决方案:

Here's the solution I use:

通过在前缀each之前简单地变换您的常规规则.例如:

Simply transform your usual rules by prefixing each. For example:

'names' => 'required|array|each:exists,users,name'

请注意，each规则假定您的字段是一个数组，因此请不要忘记像之前显示的那样先使用array规则.

Note that the each rule assumes your field is an array, so don't forget to use the array rule before as shown here.

错误消息将由您字段的单数形式(使用Laravel的str_singular()帮助器)自动计算.在上一个示例中，属性为name.

Error messages will be automatically calculated by the singular form (using Laravel's str_singular() helper) of your field. In the previous example, the attribute is name.

此方法对于点深度任意深度的嵌套数组都可以使用.例如，这有效:

This method works out of the box with nested arrays of any depth in dot notation. For example, this works:

'members.names' => 'required|array|each:exists,users,name'

同样，此处用于错误消息的属性将为name.

Again, the attribute used for error messages here will be name.

此方法开箱即用地支持您的任何自定义规则.

This method supports any of your custom rules out of the box.

class ExtendedValidator extends Illuminate\Validation\Validator {

    public function validateEach($attribute, $value, $parameters)
    {
        // Transform the each rule
        // For example, `each:exists,users,name` becomes `exists:users,name`
        $ruleName = array_shift($parameters);
        $rule = $ruleName.(count($parameters) > 0 ? ':'.implode(',', $parameters) : '');

        foreach ($value as $arrayKey => $arrayValue)
        {
            $this->validate($attribute.'.'.$arrayKey, $rule);
        }

        // Always return true, since the errors occur for individual elements.
        return true;
    }

    protected function getAttribute($attribute)
    {
        // Get the second to last segment in singular form for arrays.
        // For example, `group.names.0` becomes `name`.
        if (str_contains($attribute, '.'))
        {
            $segments = explode('.', $attribute);

            $attribute = str_singular($segments[count($segments) - 2]);
        }

        return parent::getAttribute($attribute);
    }
}

2.注册您的验证程序扩展名

在您通常的引导位置的任何地方，添加以下代码:

2. Register your validator extension

Anywhere in your usual bootstrap locations, add the following code:

Validator::resolver(function($translator, $data, $rules, $messages)
{
    return new ExtendedValidator($translator, $data, $rules, $messages);
});

就是这样！享受吧！

正如评论所指出的那样，似乎没有简单的方法来验证数组大小.但是，Laravel文档缺少大小规则:没有提到它可以计算数组元素.这意味着您实际上被允许使用size，min，max和between规则对数组元素进行计数.

As a comment pointed out, there's seems to be no easy way to validate array sizes. However, the Laravel documentation is lacking for size rules: it doesn't mention that it can count array elements. This means you're actually allowed to use size, min, max and between rules to count array elements.

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