非法字符串偏移「名稱」laravel

Question

我想爲我的表編輯值時收到非法字符串偏移量，但當我嘗試添加新值時，它會添加一個新值。如果我將​​部分註釋掉，它可以返回view，所以我猜這個問題在那邊。

<div class="col-md-12"> 
      <div class="portlet light bordered"> 
       <div class="portlet-body"> 
        <form action="{{ $formIs === 'add' ? route('campus-media.save', $campusId) : route('campus-media.update', [$campusId, $campusMedia->id]) }}" method="post" class="form-horizontal" enctype="multipart/form-data"> 
        {{ csrf_field() }} 
         <div class="form-body"> 
          <div class="form-group"> 
           <label class="control-label col-md-3">Title</label> 
           <div class="col-md-4"> 
            {!! Form::text('title', $campusMedia->title, array('class' => 'form-control', 'placeholder' => 'Campus Media Title')) !!}           
           </div> 
          </div> 
         </div> 
         <div class="form-body"> 
          <div class="form-group"> 
           <label class="control-label col-md-3">Media</label> 
           <div class="col-md-4"> 
            {!! Form::file('media', $campusMedia->media, array('class' => 'form-control')) !!}         
           </div> 
          </div> 
         </div> 
         <div class="form-body"> 
          <div class="form-group"> 
           <label class="control-label col-md-3">Media type</label> 
            <div class="col-md-4"> 
             {!! Form::select('media_type', $fileType, $campusMedia->media_type,array('placeholder' => 'Choose media type', 'class' => 'form-control')) !!} 
             <span class="help-block">0: Image, 1: Video, 2: Logo</span> 
            </div> 
          </div> 
         </div> 
         <div class="form-body"> 
          <div class="form-group"> 
           <label class="control-label col-md-3">Description</label> 
           <div class="col-md-4"> 
            {!! Form::textarea('description', $campusMedia->description, array('class' => 'form-control', 'placeholder' => 'Campus Media Description', 'rows' => 3)) !!}    
           </div> 
          </div> 
         </div> 
         <div class="form-body"> 
          <div class="form-group"> 
           <label class="control-label col-md-3">Status</label> 
            <div class="col-md-4"> 
             {!! Form::select('status', $status, $campusMedia->status,array('placeholder' => 'Choose status', 'class' => 'form-control')) !!} 
             <span class="help-block">0: Inactive, 1: Active</span> 
            </div> 
          </div> 
         </div> 
         <div class="form-body"> 
          <div class="form-group"> 
           <label class="control-label col-md-3">Tags</label> 
           <div class="col-md-4"> 
            {!! Form::text('tags', $campusMedia->tags, array('class' => 'form-control', 'placeholder' => 'Campus Media Tags')) !!}           
           </div> 
          </div> 
         </div> 
         <div class="form-actions"> 
          <div class="row"> 
           <div class="col-md-offset-3 col-md-9"> 
            <input type="submit" name="save" class="btn btn-primary" value="Save"/> 
            <a href="{{ route('campus-media.index', $campusId) }}" class="btn btn-default"> Cancel </a> 
           </div> 
          </div> 
         </div> 
        </form> 
       </div> 
      </div> 
     </div> 

這裏是我的控制器

class CampusMediaController extends Controller 
{ 
// 
public function index($campusId) 
{ 
    $campusMedia = CampusMedia::ofCampus($campusId)->get(); 
    $data = [ 
     'campusMedia' => $campusMedia, 
     'campusId'  => $campusId 
    ]; 

    return view('campus-media.index', $data); 
} 

public function add($campusId) 
{ 
    $campusMedia = new CampusMedia; 
    $data = [ 
     'campusMedia' => $campusMedia, 
     'campusId' => $campusId, 
     'fileType' => CampusMedia::getMediaType(), 
     'status'  => CampusMedia::getStatus(), 
     'formIs'  => 'add' 
    ]; 

    return view('campus-media.form', $data); 
} 

public function save(Request $request, $campusId) 
{ 
    $this->validation($request); 
    $post = $request->all(); 
    $fileName = $this->upload($request, $campusId); 
    $campusMedia = $this->bindToObject($post, $fileName, $campusId); 
    $campusMedia->save(); 

    return redirect()->route('campus-media.index', $campusId)->with('message','Item Succesfully Added'); 
} 

public function edit($campusId, $id) 
{ 
    $campusMedia = CampusMedia::find($id); 

    $data = [ 
     'campusMedia'    => $campusMedia, 
     'campusId'    => $campusId, 
     'fileType'    => CampusMedia::getMediaType(), 
     'status'     => CampusMedia::getStatus(), 
     'formIs'     => 'edit' 
    ]; 

    return view('campus-media.form', $data); 
} 

public function update(Request $request,$campusId,$id) 
{ 
    $this->validation($request); 
    $post = $request->all(); 
    $fileName = $this->upload($request, $campusId); 
    $campusMedia = $this->bindToObject($post, $fileName,$campusId,$id); 
    $campusMedia->save(); 

    return redirect()->route('campus-media.index', $campusId)->with('message','Item updated Succesfully'); 
} 

public function upload($request, $campusId) 
{ 
    $this->validate($request, [ 
      'media' => 'mimes:png,jpeg,mp4,avi,mpeg,flv,m4v' 
     ] 
    ); 

    if($request->input('media_type') == 0){ 
     $type = "image"; 
    }elseif($request->input('media_type') == 1){ 
      $type = "video"; 
    }else{ 
     $type = "logo"; 
    } 

    $file = $request->file('media'); 
    if(is_null($file)) 
     return null; 

    $ext = $file->getClientOriginalExtension(); 


    $fileName = sprintf('%s-%s-%s.%s', 
     $campusId, 
     $type, 
     time(), 
     $ext 
    ); 

    $upload  = config('app.upload_path').'/campus/'.$campusId; 
    $file->move($upload,$fileName); 

    return $fileName; 
} 

public function delete($campusId,$id) 
{ 
    $campusMedia = CampusMedia::find($id); 
    $campusMedia->delete(); 

    return redirect()->route('campus-media.index', $campusId)->with('message','Item deleted Succesfully'); 
} 

private function validation($request){ 
    $this->validate($request, [ 
      'media' => 'required' 
     ] 
    ); 
} 

private function bindToObject($post, $fileName,$campusId,$id=null) 
{ 
    if(is_null($id)){ 
     $campusMedia = new CampusMedia; 
    } else { 
     $campusMedia = CampusMedia::find($id); 
    } 

    $campusMedia->campus_id = $campusId; 
    $campusMedia->title = $post['title']; 
    $campusMedia->media = $fileName; 
    $campusMedia->media_type = $post['media_type']; 
    $campusMedia->description = $post['description']; 
    $campusMedia->status = $post['status']; 
    $campusMedia->tags = $post['tags']; 

    return $campusMedia; 
} 

}

我希望有人能幫助我，我寧願在新上傳文件。

Answer 1

您將一個對象作爲第二個參數傳遞給Form :: file，它需要是一個數組。

試試這個：

{!! Form::file('media', array('class' => 'form-control')) !!}