Laravel 自定义验证 - 获取参数
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Laravel custom validation - get parameters
提问by Rajesh Kumar
I want to get the parameter passed in the validation rule.
我想获取验证规则中传递的参数。
For certain validation rules that I have created, I'm able to get the parameter from the validation rule, but for few rules it's not getting the parameters.
对于我创建的某些验证规则，我可以从验证规则中获取参数，但对于少数规则，它无法获取参数。
In model I'm using the following code:
在模型中，我使用以下代码：
public static $rules_sponsor_event_check = array(
'sponsor_id' => 'required',
'event_id' => 'required|event_sponsor:sponsor_id'
);
In ValidatorServiceProvider I'm using the following code:
在 ValidatorServiceProvider 中，我使用以下代码：
Validator::extend('event_sponsor', function ($attribute, $value, $parameters) {
$sponsor_id = Input::get($parameters[0]);
$event_sponsor = EventSponsor::whereIdAndEventId($sponsor_id, $value)->count();
if ($event_sponsor == 0) {
return false;
} else {
return true;
}
});
But here I'm not able to get the sponsor id using the following:
但是在这里我无法使用以下内容获取赞助商 ID：
$sponsor_id = Input::get($parameters[0]);
回答by lukasgeiter
As a 4th the whole validator is passed to the closure you define with extends. You can use that to get the all data which is validated:
作为第四个，整个验证器被传递给你定义的闭包extends。您可以使用它来获取所有经过验证的数据：
Validator::extend('event_sponsor', function ($attribute, $value, $parameters, $validator) {
$sponsor_id = array_get($validator->getData(), $parameters[0], null);
// ...
});
By the way I'm using array_gethere to avoid any errors if the passed input name doesn't exist.
顺便说array_get一下，如果传递的输入名称不存在，我在这里使用以避免任何错误。
回答by Ezequiel Moreno
http://laravel.com/docs/5.0/validation#custom-validation-rules
http://laravel.com/docs/5.0/validation#custom-validation-rules
The custom validator Closure receives three arguments: the name of the $attribute being validated, the $value of the attribute, and an array of $parameters passed to the rule.
自定义验证器闭包接收三个参数：被验证的 $attribute 的名称、属性的 $value 以及传递给规则的 $parameters 数组。
Why Input::get( $parameters );then? you should check $parameters contents.
那为什么Input::get( $parameters );？您应该检查 $parameters 内容。
Edit. Ok I figured out what are you trying to do. You are not going to read anything from input if the value you are trying to get is not being submitted. Take a look to
编辑。好的，我知道你想做什么。如果您尝试获取的值未提交，您将不会从输入中读取任何内容。看看
dd(Input::all());
You then will find that
然后你会发现
sponsor_id=Input::get($parameters[0]);
is working in places where sponsor_id was submited.
在提交sponsor_id的地方工作。
