如何使用laravel 7在db中传递数组

Posted 2021-05-05

我正在尝试在db中发送数组数据，但出现错误这是我在db中发送数据的功能

 public function create(Request $request)
  {
      $tags = explode(",", $request->labels);
      $posts = new Post();
    $posts->user_id = $request->id;
    $posts->title = $request->title;
    $posts->description = $request->description;
    $tags = explode(",", $request->labels);

    $posts->tags = $tags; // error is here in this line
    $posts->save();
      return redirect()->back()->with('message' , 'post created!!!!!');

  }

答案

如果$posts->tags与之相关-即帖子hasMany标签，标签属于ToMany Post-那么您应该可以将标签附加到帖子上，如下所示：

$posts->tags()->attach($tags);
$posts->save();