wie man Rückkehr mit Eingang validiert, ohne kollektives Formular zu verwenden

Question

Ich versuche, Rückkehr zu benutzen -> withInput() aber es arbeitete nicht hier ist mein HTML und Prüfer Im benutzend Laravel 5.4 und in meiner Form verwende ich Anhängen an Schleife Daten auch .

<form action="{{route('subject.store')}}" method="POST"> 
    {{ csrf_field() }} 
    <div class="form-group row"> 
     <label class="col-sm-3 col-form-label">SUb</label> 
     <div class="col-sm-9"> 
     <input type="text" class="form-control" name="subject[]" placeholder=""> 
     </div> 
    </div> 
    <div class="form-group row"> 
     <label class="col-sm-3 col-form-label">credit</label> 
     <div class="col-sm-9"> 
     <input type="text" class="form-control" name="credit[]" placeholder=""> 
     </div> 
    </div> 
    <hr> 
    <div id="add-me"></div> 
    <div class="form-group row mb-0"> 
     <div class="offset-sm-3 col-sm-9"> 
     <button id="add-form" type="button" class="btn btn-default">addmore</button> 
     <button type="submit" class="btn btn-primary">save</button> 

     </div> 
    </div> 
    </form> 
</div> 

und in meinem Controller

$this->validate($request, [ 
    'subject.*' => 'required', 
    'credit.*' => 'required', 
], 
[ 
    'subject.*.required' => 'The category name field is required.', 
    'credit.*.required' => 'The sss name field is required.', 

] 

); 

return redirect()->back()->withInput()->withErrors($validator); 

Mein Javascript

$(document).ready(function() { 
     $('#add-form').click(function() { 
      i++; 
      id_i++;      
      $('#add-me').append(
       '<div class="form-group row">' 
       +'<label class="col-sm-3 col-form-label">sub</label>' 
       +'<div class="col-sm-9">' 
       +'<input type="text" class="form-control" name="subject[]" placeholder="">' 
       +'</div>' 
       +'</div>' 
       +'<div class="form-group row">' 
       +'<label class="col-sm-3 col-form-label">credit</label>' 
       +'<div class="col-sm-9">' 
       +'<input type="text" class="form-control" name="credit[]" placeholder="">' 
       +'</div>' 
       +'</div>' 
       +'<hr>' 
       ); 



     }); 
    }); 

, wenn ich Daten einreichen Wenn einige Validierung haben, wie kann ich wieder mit dem alten Eingang zurückkehren

Answer 1

Verwenden old Funktion um es zu bekommen

Bsp.

@if(count(old('subject', []))) 
    @foreach(old('subject') as $subject) 
     <div class="form-group row"> 
      <label class="col-sm-3 col-form-label">SUb</label> 
      <div class="col-sm-9"> 
      <input type="text" value="{{ $subject }}" class="form-control" name="subject[]" placeholder=""> 
      </div> 
     </div> 
    @endforeach 
@else 
    <div class="form-group row"> 
     <label class="col-sm-3 col-form-label">SUb</label> 
     <div class="col-sm-9"> 
     <input type="text" class="form-control" name="subject[]" placeholder=""> 
     </div> 
    </div> 
@endif