50],#关联查询2：这里加上safe验证，表示该表单字段无验证规则 ['class_name','safe'],]; } ... #关联查询3：获取被关联表 mysite_article_class public function getArticleClass(){ /** * 第一个参数为要关联的子表模型类名称， * 第二个参数指定通过子表的 id 去关联主表的 article_class 字段 */ return $this->hasMany(ArticleClass::className(),['id' => 'article_class']); } ... }

// add conditions that should always apply here

关联查询4：使用jionWith和select做关联查询

$query = Article::find();
$query->joinWith(['articleClass']);
$query->select("{{%article}}.*,{{%article_class}}.class_name");

$dataProvider = new ActiveDataProvider([
'query' => $query,]);

$this->load($params);
if (!$this->validate()) {
return $dataProvider;
}

// grid filtering conditions

精确查询

$query->andFilterWhere([
'id' => $this->id,'article_addtime' => $this->article_addtime,'article_updatetime' => $this->article_updatetime,#关联查询5：添加被关联字段的精确查询,这里要跟view表单被查询属性一致，
// '{{%article_class}}.class_name' => $this->class_name,]);

模糊查询

$query->andFilterWhere(['like',$this->article_title])
->andFilterWhere(['like',$this->article_content])
->andFilterWhere(['like',$this->article_class])
->andFilterWhere(['like','article_author',$this->article_author])

关联查询5：添加被关联字段的精确查询,这里要跟view表单被查询属性一致，

->andFilterWhere(['like','{{%article_class}}.class_name',$this->class_name]);
return $dataProvider;
}
...
}

search(Yii::$app->request->queryParams); #分页 $dataProvider->pagination = ['pagesize' => '3']; return $this->render('index',[ 'dataProvider' => $dataProvider,'model' => $article,'searchModel' => $searchModel,]); }

PHP;"> $dataProvider,#查询表单 'filterModel' => $searchModel,'columns' => [ [ 'class' => 'yii\grid\SerialColumn','header' => '编号',],// 'article_class',#注意这里被关联表字段是{{%article_class}}.class_name,表单属性这么写'attribute' => 'class_name',#查询结果就是被关联表字段值'value' => 'class_name',[ 'label'=>'文章分类','attribute' => 'class_name','value' => 'class_name','article_addtime:datetime',// 'article_updatetime:datetime',// 'article_author',[ 'class' => 'yii\grid\ActionColumn','header' => '操作',]); ?>