从编辑表单更新图片Laravel

Question

我想编辑Laravel中的博客表单。所有其他文本信息，如Title, Body已成功编辑。但无法更新Image。新图像未上传，图像路径设置为C:\xampp\tmp\php2030.tmp。

我的编辑控制器。

public function update(Request $request, $id) 
{ 
    $requestData = $request->all(); 

    $post = Post::findOrFail($id); 
    $post->update($requestData); 
    if ($request->hasFile('image')) 
    { 
     $file = $request->file('image'); 
     $fileNameExt = $request->file('image')->getClientOriginalName(); 
     $fileNameForm = str_replace(' ', '_', $fileNameExt); 
     $fileName = pathinfo($fileNameForm, PATHINFO_FILENAME); 
     $fileExt = $request->file('image')->getClientOriginalExtension(); 
     $fileNameToStore = $fileName.'_'.time().'.'.$fileExt; 
     $pathToStore = public_path('media'); 
     Image::make($file)->resize(600, 531)->save($pathToStore . DIRECTORY_SEPARATOR. $fileNameToStore); 
     $image = '/images/'.$fileNameToStore; 
     $post->save();     
     } 
    session()->flash('message', 'Successfully updated the post'); 
    return redirect('/'); 
} 

它有什么问题？

Answer 1

请使用下面的代码：

public function update(Request $request, $id) 
{ 
    $requestData = $request->all(); 
    $post = Post::findOrFail($id); 

    $pathToStore = public_path('media'); 

    if ($request->hasFile('image')) 
    { 
     $file = $request->file('image'); 
     $rules = array('file' => 'required|mimes:png,gif,jpeg'); // 'required|mimes:png,gif,jpeg,txt,pdf,doc' 
     $validator = \Illuminate\Support\Facades\Validator::make(array('file'=> $file), $rules); 

     if($validator->passes()) 
     { 
      $filename = $file->getClientOriginalName(); 
      $extension = $file -> getClientOriginalExtension(); 
      $picture = sha1($filename . time()) . '.' . $extension; 
      $upload_success = $file->move($pathToStore, $picture); 

      if($upload_success) 
      { 
       //if success, create thumb 
       $image = Image::make(sprintf($pathToStore.'/%s', $picture))->resize(600, 531)->save($pathToStore.'/thumb/'.$picture); 
      } 
     } 

     $requestData['image'] = "$pathToStore/{$picture}"; 

    } 

    $post->update($requestData); 
    session()->flash('message', 'Successfully updated the post'); 
    return redirect('/'); 
} 

Answer 2

当PHP接收到文件上传时，默认情况下它将它写入临时目录中，并在请求处理后自动删除文件。

你需要做的是将上传的文件移动到一个安全的位置。 对于可能感兴趣的文件上传，Laravel 5.5有一个store method。

public function update(Request $request, $id) 
{ 
    $requestData = $request->all(); 
    $post = Post::findOrFail($id); 

    if ($request->hasFile('image')) { 
     $file = $request->file('image'); 
     $fileNameExt = $request->file('image')->getClientOriginalName(); 
     $fileNameForm = str_replace(' ', '_', $fileNameExt); 
     $fileName = pathinfo($fileNameForm, PATHINFO_FILENAME); 
     $fileExt = $request->file('image')->getClientOriginalExtension(); 
     $fileNameToStore = $fileName.'_'.time().'.'.$fileExt; 
     $pathToStore = public_path('media'); 
     Image::make($file)->resize(600, 531)->save($pathToStore . DIRECTORY_SEPARATOR. $fileNameToStore); 

     // UPDATE TEMPORARY IMAGE PATH WITH ACTUAL PATH 
     $requestData['image'] = "/media/{$fileNameToStore}"; 
    } 

    $post->update($requestData); 
    session()->flash('message', 'Successfully updated the post'); 
    return redirect('/'); 
}