如何在控制器 Laravel 中编写自定义验证规则？

Question

我在控制器中有默认验证规则Laravel:

$validator = Validator::make($request->all(), [
            'email' => 'required|email',
            'phone' => 'required|numeric',
            'code' => 'required|string|min:3|max:4',
            'timezone' => 'required|numeric',
            'country' => 'required|integer',
            'agreement' => 'accepted'
        ]);

我试过了，但不知道如何在函数内部传递一些参数：

 public function boot()
    {
        Validator::extend('phone_unique', function($attribute, $value, $parameters) {
            return substr($value, 0, 3) == '+44';
        });
    }

我如何根据自己的规则扩展此验证？例如，我需要验证输入的连接：

$phone = $request->code.' '.$request->phone

检查数据库中是否存在$phone

我想用这个方法：

>  $validator->sometimes('phone', 'required|alpha_dash|max:25', function
> ($input) {
>             if ((Auth::user()->phone == $input->phone)) {
>                 return false;
> 
>             } else {
> 
>                 $t = User::where("phone", $input->phone)->get();
>                 return ($t->count() > 0) ? false : false;
> 
>             }
>         });

并非在所有条件下都有效(True, False)里面。

我添加了新验证 nickname_unique:

 $validator = Validator::make($request->all(), [
            'email' => 'required|email',
            'code' => 'required|string|min:3|max:4',
            'phone' => 'required|phone_unique',
            'timezone' => 'required|numeric',
            'country' => 'required|integer',
            'nickname' => 'required|alpha_dash|max:25',
            'agreement' => 'accepted'
        ], [
            'phone_unique' => 'Phone already exists!',
            'nickname_unique' => 'Nickname is busy!',
        ]);

它不起作用，甚至不调用previos下面的验证规则：

Validator::extend('nickname_unique', function ($attribute, $value, $parameters, $validator) {

            dd("Here");

});

Answer 1

您可以在 AppServiceProvider 中定义自定义验证器，如下所示：

<?php

namespace App\Providers;

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

class AppServiceProvider extends ServiceProvider
{
    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        Validator::extend('phone_unique', function ($attribute, $value, $parameters, $validator) {
          $inputs = $validator->getData();
          $code = $inputs['code'];
          $phone = $inputs['phone'];
          $concatenated_number = $code . ' ' . $phone;
          $except_id = (!empty($parameters)) ? head($parameters) : null;

          $query = User::where('phone', $concatenated_number);
          if(!empty($except_id)) {
            $query->where('id', '<>', $except);
          }

          return $query->exists();
      });

    /**
     * Register the service provider.
     *
     * @return void
     */
    public function register()
    {
        //
    }
}

You can get all the inputs passed to the validator, by accessing $validator property - getData()

您可以在自定义验证规则之后（就在 colon 之后）向规则数组添加一个额外的参数，如下所示：

'phone' => 'required|phone_unique:1',

Pass the id to be ignored while checking entries into the db

自定义验证器 Closure 接收四个参数：被验证的 $attribute 的名称、属性的 $value、传递给规则的 $parameters 数组以及验证器实例。

现在你可以这样调用验证器了：

$validator = Validator::make($request->all(), [
      'email' => 'required|email',
      'code' => 'required|string|min:3|max:4',
      'phone' => 'required|phone_unique:1',
      'timezone' => 'required|numeric',
      'country' => 'required|integer',
      'agreement' => 'accepted'
  ], [
    'phone_unique' => 'Phone already exists!', // <---- pass a message for your custom validator
  ]);

详细了解 Custom Validation Rules。

Answer 2

$messsages = array(
        'email.required'=>'Email is Required',
        'phone.required'=>'Phone number is Required',

    );

    $rules = array(
        'email' => 'required',
        'phone' => 'required',

    );

    $validator = Validator::make(Input::all(), $rules,$messsages);



    if ($validator->fails()):
        $this->throwValidationException($request, $validator);
    endif;

Answer 3

我写这个答案是因为我相信很多人都在为这个话题寻找一些好的答案。所以我决定分享我用于预订网站的代码，我想在其中检查它不是 arrival_date > departure_date.

我的Laravel版本是5.3.30

public function postSolitudeStepTwo(Request $request)
{
    $rules = [
        'arrival_date' => 'required|date',
        'departure_date' => 'required|departure_date_check',
        'occasional_accompaniment_requested' => 'required|integer',
        'accommodation' => 'required|integer',
        'are_you_visiting_director' => 'required|integer',
    ];

    if ($request->input('are_you_visiting_director') == 1) {
        $rules['time_in_lieu'] = 'required|integer';
    }

    $messages = [
        'departure_date_check' => 'Departure date can\'t be smaller then Arrival date.Please check your dates.'
    ];

    $validation = validator(
        $request->toArray(),
        $rules,
        $messages
    );

    //If validation fail send back the Input with errors
    if($validation->fails()) {
        //withInput keep the users info
        return redirect()->back()->withInput()->withErrors($validation->messages());
    } else {
        MySession::setSessionData('arrival_date', $request);
        MySession::setSessionData('departure_date', $request);
        MySession::setSessionData('occasional_accompaniment_requested', $request);
        MySession::setSessionData('accommodation', $request);
        MySession::setSessionData('are_you_visiting_director', $request);
        MySession::setSessionData('time_in_lieu', $request);
        MySession::setSessionData('comment_solitude_step2_1', $request);

        //return $request->session()->all();
        return redirect("/getSolitudeStepThree");
    }
}

我的控制器是 StepController，我在那里声明了一个方法，如您所见，名为 postSolitudeStepTwo。我声明规则并在出发日期通知我们有 required|departure_date_check 的规则。那将是

中方法的名称

app/Providers/AppServiceProvider.php

那里的代码如下所示：

public function boot()
{
    Validator::extend('departure_date_check', function ($attribute, $value, $parameters, $validator) {
        $inputs = $validator->getData();
        $arrivalDate = $inputs['arrival_date'];
        $departureDate = $inputs['departure_date'];
        $result = true;
        if ($arrivalDate > $departureDate) {
            $result = false;
        }
        return $result;
    });
}

由于 Laravel documentation 5.3 Custom validation rules 我们需要扩展 Validator facade，该方法的签名必须是：

Validator::extend(name_of_the_function, function ($attribute, $value, $parameters, $validator) {

我相信剩下的就很清楚了。

希望对大家有所帮助。

如何在控制器 Laravel 中编写自定义验证规则？

How to write custom validation rule in controller Laravel?

laravel

laravel-5.3