Question

需要eloquent / fluent查询才能与groupBy函数求和。

到目前为止，我已经尝试过：

    $this->data['no_of_pages'] = Document::sum('no_of_pages')
                                ->groupBy('users_editor_id');

由于sum（）已经执行了查询并且在应用了grouBy（）的时候已经准备好结果，因此哪个部分给了我call to member function groupBy() on non-object。那么有人可以指导我吗？

Answer 1

Document::groupBy('users_editor_id')
   ->selectRaw('sum(no_of_pages) as sum, users_editor_id')
   ->pluck('sum','users_editor_id');

   // originally lists(), which was deprecated in favour of pluck in 5.2
   // and dropped completely in 5.3
   // ->lists('sum','users_editor_id');


// returns array like this:
array(
  users_editor_id => sum,
  ...
)

或者这种方式（我不会使用它，因为它不会成为实际的ORM结果）：

Document::groupBy('users_editor_id')
   ->selectRaw('*, sum(no_of_pages) as sum')
   ->get();

// returns collection of Document pseudo models with additional sum field

Answer 2

Document::Where('some_condition',true)
   ->select([DB::raw("SUM(debit) as total_debit"), DB::raw("SUM(credit) as total_credit")])
   ->groupBy('id')
   ->get()

Answer 3

一些重构和方便的答案是（来自@keroles Monsef）

Document::Where('some_condition',true)
    ->selectRaw("SUM(debit) as total_debit")
    ->selectRaw("SUM(credit) as total_credit")
    ->groupBy('id')
    ->get();

Laravel Eloquent：与groupBy相加

3 个答案: