Laravel 对来自标签输入的多个值进行唯一验证

Question

我需要对标签输入使用 laravel 唯一验证，但我面临多个值的问题，唯一规则在插入一个值时运行良好，但当添加多个值时它不起作用.

这是我的控制器代码

 public function createteacher()
 {
     $rules = array (
         'teacher-name'  => 'required|unique:teacher,name',
     );

     $msgs =array(
         'teacher-name.required' => 'please insert teacher name',  
         'unique' => 'teacher name already exist',
     );

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

     if ($validator->fails())
     {
         return  Response::json(['success'=>false,'error'=>$validator->errors()->toArray() ]);
     }
     else
     {
         $c = count(explode(',', Input::get('teacher-name')));

         $teachers_ids = explode(',', Input::get('teacher-name'));

         //if Validated
         for ($i = 0 ; $i < $c ; $i++)
         {
             $new_teacher = Teacher::firstOrCreate(array('name'=>$teachers_ids[$i]));  
         }

         return Response::json(['success'=>true]); 
     }
 }

这是我的查看代码

<div class="col-md-6">
 <div class="box box-redorange">
  <div class="box-header">
   <h3 class="box-title" style="float:right"> Adding Teachers </h3>
  <i class="fa fa-spinner fa-spin fa-lg" style="display:none float:left;" id="teacher-adding-load"></i> &nbsp;
   </div>
  <div class="box-body">                                    

     {{Form::open(array('url'=>'management/createteacher','id'=>'teacher-form'))}}
   <div class="form-group">
    <label for="teacher-name[]">Teacher Name </label>
    <select multiple data-role="tagsinput" name="teacher-name[]"   id="teacher-name" class="form-control" autofocus="true">
           <option value="" ></option>
    </select>
      </div>                     
      </div> <!-- end box body-->
      <div class="box-footer">
      {{Form::submit('Add',array('style'=>'color:#fff;font-weight:bold; ','class' => 'btn btn-redorange btn-block btn-sm')) }}
       {{Form::close()}}
       </div> <!--end box footer -->
       </div> <!-- end box -->
       <div class="form-group help-block teahcer-form-msgs" style="display:none;">
             <small></small>
       </div> 
      </div> <!-- end col-m-6 -->

最后是我的 ajax 代码

 $(document).ready(function(){

 var msgs = $('.teahcer-form-msgs');

 $('#teacher-form').submit(function(e){
  e.preventDefault();
 var $teacher_loading = $('#teacher-adding-load').show();

   // form data
    var formData = new FormData ();

     formData.append('teacher-name' , $('#teacher-name').val());

 $.ajax({
 url:'/elaqsacenter/public/management/createteacher',
 method:'post',
 processData:false,
 contentType:false,
 cache:false,
 dataType: 'json',
 data:formData,
 complete:  function(){
      $teacher_loading.hide();
  },
   global: false,
   success:function(data){

   msgs.hide().find('small').empty();

   if (!data.success) {

    $.each(data.error,function(index,error){

        msgs.find('small').append('<p class="text-danger">'+'<span     

       class="glyphicon glyphicon-exclamation-sign" aria-hidden="true">

       </span>'+' '+error+'</p>');

      // disable submit button when throw Validation messages 
     $('input[type=submit]').prop("disabled", true);
       setTimeout(function() {
       $('input[type=submit]').prop("disabled", false);
      }, 4000);
  });
    msgs.slideDown();
    msgs.delay(3000).slideUp();

  }else{
 msgs.find('small').append('<p class="text-success">data Inserted</p>');
      msgs.slideDown();
      msgs.delay(3000).slideUp();
      setTimeout(function(){location.reload();},2000);  
   }

 },
  global: false,
  error:function(){},

   });

  });

});

我的主要问题是如何将唯一规则与通过标签输入插入的多个值一起使用

Answer 1

我遇到了同样的问题。问题是您正在提交一个数组 [] teacher-name[]。鉴于此，假设在提交后您可以通过键入以下内容输出您获得的整个数组：

$data=Input::all();
            echo '<p style="color: blue;">The array data submitted are :<br><strong>'.print_r(Input::all(),true).'</strong></p>';
            die();

您会注意到您实际上是在一个数组中获取一个数组。所以验证需要一个值数组，而不是一个数组数组。

要解决这个问题，你需要使用foreach函数。仅出于测试目的，假设老师的姓名长度不应超过 5 个字符：

    $data=Input::all();
                echo '<p style="color: blue;">The array data submitted are :<br><strong>'.print_r(Input::all(),true).'</strong></p>';
foreach ($data['teacher-name'] as $key => $value) {
$validacion=Validator::make(
                        array(
                            $key    =>  $value
                            ),
                        array(
                            $key    =>  'max:5'
                            ),
                        array(
                            'max'   => 'In Spanish i\'d say this field can\'t be greater than :max chars...'
                            )
                        );
                    if($validacion->fails()){
                        echo '<p style="color: red;">Validation has failed for <b>'.$value.'</b></p>';
                    }
}
            die();

因此，解决方案是在为 Input::all().

提交数组时必须使用 foreach 函数

Answer 2

我发现更简单的方法可以遍历 tagsInput 值来验证它，如下所示

   $c = count(Input::get('teacher-name') );

    //In view the name must be  name="teacher-name[]"
   $teacher_name =Input::get('teacher-name');

   /* To loop over multiple values that insert from tags input.
      you can add all laravel validation with this way .
      and custom :attribute by setAttributeNames() method */      
    for ($i = 0; $i < $c ; $i++){

   $rules[$i] = 'required|between:3,15';

   $customAttributes[$i] =  $i + 1  ;
}

    $msgs =  array('required' => '.Teacher Name Is Required' ,
                   'between' => '.Teacher Num  (:attribute) must be between 3 : 15 chars' ) ; 

    $validateTeacher = Validator::make($teacher-name,$rules,$msgs);
    $validateTeacher->setAttributeNames($customAttributes); 

      if ($validateDivision->fails() OR $validateGrade->fails()) 
    {
       // return Ajax Validation Messages OR laravel Validation Messages 
    }

通过上面的方式你可以一个一个循环遍历tagsInput的值，Enjoy :)

Laravel 对来自标签输入的多个值进行唯一验证

Laravel unique validation for multiple values from tags input

php

ajax

laravel

laravel-4

laravel-validation