如何在 Laravel 控制器中使用 null 或为空？

Question

I want to delete a row from likes_table if the table already has a row which contain requested shop_id and user_id combination. Or, make a new row if it not exists.

However, this following code always executes delete method (returns 204) even if there is no row.

Would you give me any advice?

public function store(Request $request)
    {
        $liked_id = Like::where('shop_id', $request->shop_id)
            ->where('user_id', $request->user_id)
            ->get('id');
        $liked = Like::find($liked_id);
        if (!empty($liked)) {
            Like::where('shop_id', $request->shop_id)
                ->where('user_id', $request->user_id)->delete();
            return 204;
        } else {
            return Like::create($request->all());
        }
    }

Answer 1

I solved it myself.

OK：

if ($liked->isEmpty())

NG:

if (!empty($liked))