Question

你如何为一个雄辩的模型添加别名？例如，如果我有一个SQL查询，如下所示：

SELECT one.name
     , one.id
     , one.name AS sortkey1
     , CAST(NULL AS UNSIGNED) AS sortkey2
     , CAST(NULL AS UNSIGNED) AS sortkey3
 FROM locations AS one
WHERE one.parent_id = 0
UNION ALL
....

在我的存储库中，我会有以下内容：

$first = $this->model->where('one.parent_id', '=', 0)
                     ->select('one.name'
                           , 'one.id'
                           , 'one.name AS sortkey1'
                           , DB::raw('CAST(NULL AS UNISIGNED) AS sortkey2')
                           , DB::raw('CAST(NULL AS UNISIGNED) AS sortkey3'));

那么你如何为模型添加别名呢？在上面的示例中，模型映射了位置表，在我的雄辩查询中，我想将其别名为one，而不是locations

Answer 1

您可以这样使用from：

$first = $this->model->from('locations as one')
                     ->where('one.parent_id', '=', 0)
                     ->select('one.name'
                           , 'one.id'
                           , 'one.name AS sortkey1'
                           , DB::raw('CAST(NULL AS UNISIGNED) AS sortkey2')
                           , DB::raw('CAST(NULL AS UNISIGNED) AS sortkey3'));

如何在查询中对eloquent模型进行别名

1 个答案: