在视图中进行计算获得字段如何排序 [ 2.0 版本 ]

首先需要定义'enableSorting'=>true,才能让字段点击排序，即：
`

    [
            'attribute'=>'_percent',
            'label'=>'销售占比',
            'enableSorting'=>true,
            'value'=>function($model){
                return $model->saleroom/$model->saleroom_sum;
            }
        ],

然后在Model的Search中，增加

$query = YourModel::find()->addSelect('*')->addSelect(new Expression('saleroom/saleroom_sum as _percent'));

$dataProvider->setSort([
        'attributes' => [
            '_percent' => [
                'asc' => ['_percent' => SORT_ASC],
                'desc' => ['_percent' => SORT_DESC],
                'label' => 'Customer Name'
            ],
        ]
    ]);

`
这样就可以实现你想要的排序了~