Laravel 5.1 文件上传 isValid() 字符串？
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Laravel 5.1 File Upload isValid() on string?
提问by Stefano Groenland
So I am making a function for file uploading in my project.
所以我在我的项目中制作了一个文件上传功能。
however, when I try it I get this error : Call to a member function isValid() on string
但是，当我尝试时，我收到此错误： Call to a member function isValid() on string
My code for the upload function :
我的上传功能代码：
public function upload(Request $request){
$file = array('profielfoto' => $request->input('profielfoto'));
$rules = array('profielfoto' => 'required',);
$validator = Validator::make($file,$rules);
if($validator->fails()){
return redirect('/profiel')->withInput()->withErrors($validator);
}
else{
if($request->input('profielfoto')->isValid()){ //<- gives error
$destinationPath = 'assets/uploads';
$extension = $request->input('profielfoto')->getClientOriginalExtension();
$fileName = rand(1111,9999).'.'.$extension;
$request->input('profielfoto')->move($destinationPath,$fileName);
Session::flash('alert-success', 'Foto uploaden gelukt');
return redirect('/profiel');
}
else{
Session::flash('alert-danger', 'Foto uploaden mislukt');
return redirect('/profiel');
}
}
}
The form in the blade view on the 4th line from down below is the location for the input!
从下往下第 4 行的刀片视图中的表单是输入的位置！
<form method="POST" action="/profiel/upload" files="true">
{!! csrf_field() !!}
<input type="hidden" name="_method" value="PUT">
<input type="hidden" class="form-control id2" id="id2" name="id" value="{{$user->id}}">
<img src="assets/images/avatar.png" alt="gfxuser" class="img-circle center-block">
<div class="form-group center-block">
<label class="center-block text-center" for="fotoinput">Kies uw foto</label>
<input class="center-block" type="file" name="profielfoto" id="profielfoto">
</div>
<button type="submit" class="btn btn-success"><span class="fa fa-check" aria-hidden="true"></span> Verander foto</button>
</form>
回答by Amarnasan
You must ask isValid()to a file, not to the name of the file. That's why you get the error. You can get the file through $request->file()or through Input::file():
您必须询问isValid()文件，而不是文件名。这就是你得到错误的原因。您可以通过$request->file()或通过 Input::file()以下方式获取文件：
else{
if( $request->file('profielfoto')->isValid()){ //<- gives error
Also your form should include the correct enctype to send files:
此外，您的表单应包含正确的 enctype 以发送文件：
<form enctype="multipart/form-data">
回答by xuwenzhi
I think you should use as this.
我认为你应该使用这个。
$file = $request -> file('Filedata');
if (!$file -> isValid()) {
echo Protocol::ajaxModel('JSEND_ERROR', 'not an valid file.');
return;
}
Add attribute on
添加属性
enctype="multipart/form-data"
