如果我在db中有2个字段-概率和影响，并且我需要在GridView中将这两个字段相乘的列。我设法像这样添加它：
[
'attribute' => 'priority',
'format' => 'raw',
'value' => function ($model) {
return $model->influence * $model->probability;
},
],
但是无法处理排序，因为该列不在db中，并且向$ query添加过滤器只会导致错误。
$query = Risks::find();
$query->select(`probability*influence AS priority`);
$dataProvider = new ActiveDataProvider([
'query' => $query,
]);
已更新（适用于Asc和Desc，但不适用于过滤器）
public function search($params)
{
$query = Risks::find();
$query->joinWith(['author', 'proj']);
$query->select('*, (probability * influence) as priority');
$dataProvider = new ActiveDataProvider([
'query' => $query,
]);
$dataProvider->setSort([
'attributes' => [
// 'id',
'probability',
'risks',
'influence',
'del' => [
'asc' => ['risks.del' => SORT_ASC],
'desc' => ['risks.del' => SORT_DESC],
],
'priority' => [
'asc' => ['priority' => SORT_ASC],
'desc' => ['priority' => SORT_DESC],
'label' => 'Priority',
],
'proj' => [
'asc' => ['projects.name' => SORT_ASC],
'desc' => ['projects.name' => SORT_DESC],
],
'author' => [
'asc' => ['users.name' => SORT_ASC],
'desc' => ['users.name' => SORT_DESC],
]
]
]);
$this->load($params);
if (!$this->validate()) {
// uncomment the following line if you do not want to any records when validation fails
// $query->where('0=1');
return $dataProvider;
}
$query->andFilterWhere([
'id' => $this->id,
'proj_id' => $this->proj_id,
'author_id' => $this->author_id,
'influence' => $this->influence,
'probability' => $this->probability,
//'del' => $this->del,
])
->andFilterWhere(['like', 'projects.name', $this->proj])
->andFilterWhere(['like', 'users.name', $this->author]);
$query->andFilterWhere(['like', 'risks', $this->risks]);
$query->having('priority = '. $this->priority);
//$query->having(['priority' => $this->priority]);
return $dataProvider;
}
步骤1：将吸气剂功能添加到基本Risks模型中：
public function getPriority() {
return ($this->probability * $this->influence);
}
步骤2：priority为模型添加属性RisksSearch并配置规则。
/* your calculated attribute */
public $priority;
/* setup rules */
public function rules() {
return [
/* your other rules */
[['priority'], 'safe']
];
}
步骤3：编辑search（）方法以包括计算所得的字段 priority
public function search($params) {
$query = Person::find();
$query->select('*, (probability * influence) as priority');
$dataProvider = new ActiveDataProvider([
'query' => $query,
]);
/**
* Setup your sorting attributes
* Note: This is setup before $this->load($params)
*/
$dataProvider->setSort([
'attributes' => [
'id',
'priority' => [
'asc' => ['priority' => SORT_ASC],
'desc' => ['priority' => SORT_DESC],
'label' => 'Priority',
'default' => SORT_ASC
],
]
]);
...
步骤4：添加$query->andFilterWhere()之后$this->load($params)才能过滤计算出的字段
// use the operator you wish, i.e. '=', '>', '<' etc
$query->andFilterWhere(['=', '(probability * influence)', $this->priority]);
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我来说两句