我想使用另一個(gè)控制器保存信息以將其存儲(chǔ)在數(shù)據(jù)庫(kù)中。在我的情況下，有兩個(gè)控制器：PostingsController評(píng)論控制器我可以使用 CommentsController 為評(píng)論創(chuàng)建創(chuàng)建函數(shù)，但我無(wú)法從 CommentsController 將 post_id 保存在數(shù)據(jù)庫(kù)中。我想使用 PostingsController 保存 post_id，因?yàn)樗哂校?/if user did not fill the form properly    //error messages will popup    $this->validate($request, [        'comment' => 'required',    ]);    //if user filled the form properly    //store the form    $comment = new Comment();    //for connecting both user and comment    $comment->user_id = Auth::id();    //to store comment    $comment->post_id = //I want to save post_id from PostingsController    //to store comment    $comment->comment = $request->input('comment');    //save all user input    $comment->save();    dd($comment);我設(shè)置了 $comment = Posting::id();，但它不起作用。錯(cuò)誤是：BadMethodCallExceptionCall to undefined method App\Models\Posting::id()