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我想为我的表编辑值时收到非法字符串偏移量，但当我尝试添加新值时，它会添加一个新值。如果我将部分注释掉，它可以返回view，所以我猜这个问题在那边。非法字符串偏移“名称”laravel
<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', $campusId) }}" class="btn btn-default"> Cancel </a>
</div>
</div>
</div>
</form>
</div>
</div>
</div>
这里是我的控制器
class CampusMediaController extends Controller
{
//
public function index($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 $campusMedia;
}
}
我希望有人能帮助我，我宁愿在新上传文件。
我的假设是因为'$ campusMedia'从未保存，当你将它发送到视图，它已不再是什么，你认为它是。 'dd（$ campusMedia）'在你的视图文件中（顶部）看它是什么，它是空的吗？ – Ohgodwhy
@Ohgodwhy不，它不是，当我'dd（$ campusMedia）时，我得到了属性' – goateee25