检索数组名称

Question

I have used array name in form. this routes to the controller function shown below.

  <form method="POST" action="{{url('quiz/check')}}"
{!! csrf_field() !!} 

@foreach ($quiz as $q)

@if($q->level=='1')
{{ $q->qid }}.  
{{ $q->question }}<br>
<input type='radio' name='mycheck[{{$q->qid}}]' value='1'>     
{{ $q->opt1 }}<br>
<input type='radio' name='mycheck[{{$q->qid}}]' value='2'>     
{{ $q->opt2 }}<br>
<input type='radio' name='mycheck[{{$q->qid}}]' value='3'>    
{{ $q->opt3 }}<br>
<input type='radio' name='mycheck[{{$q->qid}}]' value='4'>   
{{ $q->opt4 }}<br><br>
@endif
@endforeach        
    <button type="submit" class="btn btn-default">Get result</button>
                            </form>

which i am trying to retrieve in controller as:

public function check(Request $request)
  {
    $count=0; 
    $input=$request->all();
    $mycheck=$input['mycheck'];
    $ch = DB::select('select * from quiz where category="gk" ');
    return View('quiz.check',['quiz'=>$ch,'input'=>$input,'count'=>$count]);     
 }

view file check.blade.php

Results:
@foreach ($quiz as $q)

   @if(array_key_exists($q->qid, $mycheck) && $mycheck[$q->qid]==$q->answer)
      {{$count=$count+1}}

@endif

@endforeach        

You scored {{$count}}.

now, i am getting this error:

undefined variable: mycheck in view file

Answer 1

You are not passing $mycheck variable to view.

Replace this line:

return View('quiz.check',['quiz'=>$ch,'input'=>$input,'count'=>$count]);     

With this:

return View('quiz.check',['quiz'=>$ch,'input'=>$input,'count'=>$count,'mycheck'=>$mycheck]);   

Also, looks like You trying to access variable $q which is actually variable $quiz according to Your data passed to view.