Question

我正在尝试删除单个用户评论以及与之相关的图片，方法是从数据库记录和存储中删除它们。不幸的是我不断收到错误。下面是我到目前为止的代码。

表：评论：id，comment，user_id，person_id 图片：id，image，comment_id，user_id，person_id

关系：评论：

public function pictures()
{
    return $this->hasMany('App\Picture', 'comments_id', 'id');
}

图片：

   public function comments()
    {
        return $this->belongsTo('App\Comment', 'comments_id');
    }

控制器：

public function destroy($id)
{
    $comment = Comment::find($id);
    Storage::delete($comment->pictures());

    $comment->delete();
    Session::flash('success', 'Your comment and pictures were deleted');

    return redirect()->route('home');
}

有什么想法吗？

Answer 1

您需要使用pluck()来加载图像文件名：

$files = $comment->pictures()->pluck('filename');

然后删除这些文件：

foreach ($files as $file) {
    Storage::delete(storage_path('images/' . $file));
}

这只是一个示例，您需要输入正确的列名而不是filename并构建图像的正确路径。

从DB中删除图像：

$comment->images()->delete();

Answer 2

$comment->pictures()返回关系的定义，而不是相关图片。如果你想删除所有图片，你需要迭代它们并逐个删除：

$comment = Comment::find($id);
foreach ($comment->pictures as $picture) {
  // delete picture from storage
  Storage::delete($picture->id); //or whatever field is used as key in the storage
  // delete picture from the database - might be optional if you've set a cascade on delete behaviour in your foreign key definition
  $picture->delete();
}

Answer 3

您需要提供filename图片才能从storage删除图片。

$comment = Comment::find($id);
foreach($comment->pictures as $picture)
        Storage::delete($picture->image);

Picture::where('comment_id',$comment->id)->delete();
$comment->delete();

删除评论和相关图像

3 个答案: