Laravel雄辩从第二级表中获取数据

Question

我有表格：operations,remarks和adjustments。

operations：

| id | user_id | operation | start_date | end_date | 
| 1 |  2 | opeartion1 | 1/1/16 | 5/5/16 | 
| 2 |  2 | opeartion2 | 1/1/16 | 5/5/16 | 

remarks：

| id | user_id | operation_id | remarks | 
| 10 |  4  |  1  | remarks1 new | 
| 13 |  4  |  2  | remarks22new | 

adjustments：

| id | remarks_id | user_id |   before   |    after   |  created_at  |  updated_at  | 
|:--:|:----------:|:-------:|:----------------------:|:----------------------------:|:-------------------:|:-------------------:| 
| 1 |  10  | 6 | {"remarks":"remarks1"} | | {"remarks":"remarks1 new"} | 0000-00-00 00:00:00 | 0000-00-00 00:00:00 | 
| 2 |  13  | 7 | {"remarks":"remarks1"} | | {"remarks":"remarks1 new"} | 0000-00-00 00:00:00 | 0000-00-00 00:00:00 | 

我想从adjustments表中获取数据，在Operation特别operation_id这样控制器的show()方法：

$history = Adjustment::with('user','remark')->get(); 

从此我得到的所有行从adjustments表是这样的：

Jerry Nienow 2016-05-12 07:00:24 {"remarks":"remarks1"} {"remarks":"remarks1 new"} 
Jerry Nienow 2016-05-12 07:01:09 {"remarks":"remarks22"} {"remarks":"remarks22new"} 

，但我希望有一个特定的operation_id这样的：

Jerry Nienow 2016-05-12 07:00:24 {"remarks":"remarks1"} {"remarks":"remarks1 new"} 

Answer 1

刚加入remarks表，并通过此结果得到结果$operationId：

Adjustment::join('remarks', 'remarks.id','=', 'adjusments.remarks_id')->where('remarks.operation_id', '=', $operationId)->get(); 

您应该先设置$operationId。