问题描述
每当我尝试进入上传页面时，都会不断出现此错误.
I keep on getting this error whenever I try to enter the upload page.
有人可以帮忙吗?
我已经完成了紧凑的部分，以确保将变量传递给视图，而且我认为我的路线应该没问题.
I have already done the compact part to make sure that the variable is being passed to the view and also my route should be ok I think.
我尝试使用dd，但它所做的只是继续向我显示错误
I tried using dd but all it does is keep on showing me the error
错误:未定义的变量:用户(视图:C:\ xampp \ htdocs \ Evaluation \ resources \ views \ upload.blade.php)
Error: Undefined variable: user (View: C:\xampp\htdocs\Evaluation\resources\views\upload.blade.php)
这是我的代码:
upload.blade.php
upload.blade.php
<form class="form-horizontal" method="post" action="{{ url('/userUpload')}}" enctype="multipart/form-data">
{{ csrf_field() }}
<input type="hidden" name="user_id" value="{{$user->id}}">
<div class="form-group">
<label for="imageInput" class="control-label col-sm-3">Upload Image</label>
<div class="col-sm-9">
<input type="file" name="file">
</div>
</div>
<div class="form-group">
<div class="col-md-6-offset-2">
<input type="submit" class="btn btn-primary" value="Save">
</div>
</div>
</form>
UploadController:
UploadController:
public function upload(){
return view(‘upload’);
}
public function store(Request $request,$id){
$this->validate($request, [
'file' => 'required|image|mimes:jpeg,png,jpg,gif,svg|max:2048',
]);
var_dump('has file '.$request->hasFile('file'));
if ($request->hasFile('file')) {
$image = $request->file('file');
$name = $image->getClientOriginalName();
$size = $image->getClientSize();
$id = $request->user_id;
$destinationPath = public_path('/images');
$image->move($destinationPath, $name);
$Image = new Image;
$Image->name = $name;
$Image->size = $size;
// $Image->user_id = $id;
//$Image->save();
$user->find($id);
dd($user);
$user->Images()->save($Image);
}
return redirect('/home');
}
public function test(){
$user = user_information::where('id')->get();
return view('upload', compact('user'));
}
路线:(这是我的路线)
Route: (this are my route)
Route::get('/UploadUser/upload','UploadController@upload’);
Route::post('/UploadUser','UploadController@store');
Route::post('/UploadUser/upload', 'UploadController@test');
另一个问题:尝试上传文件时，我一直遇到此错误，该怎么办?
Another question: I keep on getting this error when i try to upload a file, so what should I do?
这是错误:
图片模型:
class Image extends Model
{
protected $fillable = array('name','size','user_id');
public function user_informations() {
return $this->belongsTo('App\user_information', 'user_id', 'id');
}
}
图片表格:
Schema::create('images', function (Blueprint $table) {
$table->increments('id');
$table->string('name');
$table->string('size');
$table->integer('user_id')->unsigned();
$table->foreign('user_id')->references('id')->on('user_informations');
$table->timestamps();
});
用户信息表:
Schema::create('user_informations', function (Blueprint $table) {
$table->increments('id');
$table->engine = 'InnoDB';
$table->binary('signature');
$table->String('Name');
$table->timestamps();
});
用户信息模型:
class user_information extends Eloquent
{
protected $fillable = array('signature', 'Name');
protected $table = 'user_informations';
protected $primaryKey = 'id';
public function Images() {
return $this->hasOne('App\Image','user_id');
}
}
如何获取图像?这是查看文件夹:
How to get the image?Here is the view folder:
@foreach ($data as $object)
<b>Name: </b>{{ $object->Name }}<br><br>
<a href="{{ url('/user/show/'.$object->id.'/edit') }}">Edit</a><br>
@foreach ($data3 as $currentUser)
<img src="{{ asset('public/images/' . $currentUser->Image->name ) }}">
@endforeach
@if($data3->count())
@foreach($data3 as $currentUser)
<a href="{!! route('user.upload.image', ['id'=>$currentUser->user_id]) !!}">
<button class="btn btn-primary"><i class ="fa fa-plus"></i>Upload Images</button>
</a>
@endforeach
@else
<a href="{!! route('user.upload.image', ['id'=>$object->id]) !!}">
<button class="btn btn-primary"><i class ="fa fa-plus"></i>Upload Images</button>
@endif
@endforeach
HomeController:
HomeController:
public function getInfo($id) {
$data = user_information::where('id',$id)->get();
$data3=Image::where('user_id',$id)->get();
return view('test',compact('data','data3'));
推荐答案
由于您没有将用户传递到您的上传视图中，因此请尝试通过以下方式传递它:
Because you didn't pass the user to your upload view, try to pass it like this :
public function upload(){
$id = 1 //The wanted user or if the user is authenticated use Auth::id()
$user = User::find($id);
return view('upload')->withUser($user);
}
或者如果用户通过了身份验证，请在视图中使用Auth:
Or if the user is authenticated use Auth in the view :
<form class="form-horizontal" method="post" action="{{ url('/userUpload')}}" enctype="multipart/form-data">
{{ csrf_field() }}
<input type="hidden" name="user_id" value="{{auth()->id()}}">
<div class="form-group">
<label for="imageInput" class="control-label col-sm-3">Upload Image</label>
<div class="col-sm-9">
<input type="file" name="file">
</div>
</div>
<div class="form-group">
<div class="col-md-6-offset-2">
<input type="submit" class="btn btn-primary" value="Save">
</div>
</div>
</form>
第二个问题是因为您在路线中
For the second problem it's because in the route you have
Route::post('/UploadUser','UploadController@store');
，您的商店方法签名为
public function store(Request $request,$id){
发生问题的$id参数，因为它未在路由中定义，因此只需将其从方法signatre中删除
The $id parameter that did the problem because it's not defined in the route so simply remove it from the method signatre
public function store(Request $request){
$this->validate($request, [
'file' => 'required|image|mimes:jpeg,png,jpg,gif,svg|max:2048',
]);
if ($request->hasFile('file')) {
$image = $request->file('file');
$name = $image->getClientOriginalName();
$size = $image->getClientSize();
$id = $request->user_id; // here id is declared no need for the parameter
$destinationPath = public_path('/images');
$image->move($destinationPath, $name);
$Image = new Image;
$Image->name = $name;
$Image->size = $size;
$Image->user_id = $id;
$Image->save();
}
return redirect('/home');
}
对于第三种情况，您必须从更改路线:
For the third case you have to change the routes from :
Route::get('/UploadUser/upload','UploadController@upload’);
到
Route::get('/UploadUser/{user}/upload','UploadController@upload’)->name('user.upload.image');
然后在视图中，将id添加到上载按钮的网址中:
And in the view add the id in the upload button url maybe like this :
{!! route('user.upload.image', ['user'=>$currentUser->id]) !!}
然后使用上传方法:
public function upload(user_information $user){ // route model binding here
// dd($user); //for testing only :)
return view('upload')->withUser($user);
}
在视图中更改
<input type="hidden" name="user_id" value="{{auth()->id()}}">
收件人
<input type="hidden" name="user_id" value="{{$user->id()}}">
您很高兴;)
@foreach ($data as $currentUser)
<b>Name: </b>{{ $currentUser->Name }}<br><br>
<a href="{{ url('/user/show/'.$currentUser->id.'/edit') }}">Edit</a><br>
@if($currentUser->Image)
<img src="{{ asset('public/images/' . $currentUser->Image->name ) }}">
@endif
<a href="{!! route('user.upload.image', ['id'=>$currentUser->id]) !!}">
@endforeach
这篇关于未定义变量:用户laravel的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！