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        Laravel Eloquent:如何僅從連接表中獲取某些列

        Laravel Eloquent: How to get only certain columns from joined tables(Laravel Eloquent:如何僅從連接表中獲取某些列)
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                • 本文介紹了Laravel Eloquent:如何僅從連接表中獲取某些列的處理方法,對大家解決問題具有一定的參考價值,需要的朋友們下面隨著小編來一起學習吧!

                  問題描述

                  我在 Eloquent 中有 2 個連接表,即主題和用戶.

                  I have got 2 joined tables in Eloquent namely themes and users.

                  主題模型:

                  public function user() {
                    return $this->belongs_to('User');
                  }
                  

                  用戶模型:

                  public function themes() {
                    return $this->has_many('Theme');
                  }
                  

                  我的 Eloquent api 調用如下所示:

                  My Eloquent api call looks as below:

                  return Response::eloquent(Theme::with('user')->get());
                  

                  返回主題中的所有列(很好)和用戶的所有列(不好).我只需要用戶模型中的用戶名"列,如何將查詢限制為該列?

                  Which returns all columns from theme (that's fine), and all columns from user (not fine). I only need the 'username' column from the user model, how can I limit the query to that?

                  推薦答案

                  更改模型以指定要選擇的列:

                  Change your model to specify what columns you want selected:

                  public function user() {
                    return $this->belongs_to('User')->select(array('id', 'username'));
                  }
                  

                  并且不要忘記包括您要加入的專欄.

                  And don't forget to include the column you're joining on.

                  這篇關于Laravel Eloquent:如何僅從連接表中獲取某些列的文章就介紹到這了,希望我們推薦的答案對大家有所幫助,也希望大家多多支持html5模板網!

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