How to display gridview grouped by field?

Question

Yii

There is such a base

| id | total | group |
+---+------+-------+
|  1 |   1    |       1  |  
|  2 |   2    |       2  |    
|  3 |   0    |       1  |    
|  4 |   5    |       2  |

I need to display the gridview so that it groups the tables by the group field
and sorts each table by the total field,
I need to get such an output

группа1
    данные с полем group=1
    данные с полем group=1
группа2
     данные с полем group=2
     данные с полем group=2

Answer 1

Good morning.
Group $dateProvider first, and then give it to the widget or see this grid