仅当存在于 laravel 中时才取消链接图像

Question

更新用户图像时，如果存在，请从公用文件夹中取消链接图像，否则请使用图像更新用户。目前我没有用户图像。在从个人资料部分更新用户时，我收到此错误 unlink('images/users') is a directory。我想如果用户存在图像然后取消链接图像并上传新图像，否则只需上传新图像。

我的控制器：

public function changeUserImage(Request $request)
    {
        $this->validate($request, [
            'image' => 'required|mimes:jpeg,jpg,png|max:10000',
        ]);
        $image = $request->file('image');
        if (isset($image)) {
            $imageName = time() . '.' . $request->image->getClientOriginalExtension();
            if (!file_exists('images/users')) {
                mkdir('images/users', 0777, true);
            }
            if (file_exists('images/users')){
                unlink('images/users/' . \auth()->user()->image);
                $image->move('images/users', $imageName);
                User::find(\auth()->user()->id)->update(['image'=>$imageName]);
            }else if (!file_exists('images/users')){
                $image->move('images/users', $imageName);
                User::find(\auth()->user()->id)->update(['image'=>$imageName]);
            }
        }
        return redirect()->back();
    }

Answer 1

试试这个。我还没有测试它。如果您有任何问题，请告诉我。

确保导入文件：use File;

更新

public function changeUserImage(Request $request)
{
    $this->validate($request, [
        'image' => 'required|mimes:jpeg,jpg,png|max:10000',
    ]);
    // Let get the current image
    $user = Auth::user();
    $currentImage = $user->image;
    // Let compare the current Image with the new Image if are not the same
    $image = $request->file('image');
    // The Image is required which means it will be set, so we don't need to che isset($image)
    if ($image != $currentImage) {
      // To make our code cleaner let define a directory for DRY code
        $filePath = public_path('images/users/');
        $imageName = time() . '.' . $request->image->getClientOriginalExtension();
        if (!File::isDirectory($filePath)){
            File::makeDirectory($filePath, 0777, true, true);
        }
        $image->move($filePath, $imageName);
        // After the Image has been updated then we can delete the old Image if exists
        if (file_exists($filePath.$currentImage)){
            @unlink($filePath.$currentImage);
        }
    } else {
      $imageName = $currentImage;
    }
    //  SAVE CHANGES TO THE DATA BASE
    $user->image = $imageName;
    $user->save();
    
    return redirect()->back();
}

Answer 2

要存储图像：$request->image->storeAs('images/users/', $file_name);

删除图片：Storage::delete('images/users/'. $file_name);