Yii 2.0实现联表查询加搜索分页的方法示例

前言

最近在学习yii2.0，在使用yii2.0过程中遇到一些问题，现将查询搜索分页的方法整理如下，分享出来供大家参考学习，话不多说，来一起看看详细的介绍：

主表：{{%article}}

关联表：{{%article_class}}

方法如下

1、使用gii创建CRUD和search不详述

2、在Article中添加的关联内容，代码#注释部分

class Article extends yiidbActiveRecord 
{ 
 #关联查询1：这里加上被关联字段 
 public $class_name; 
... 
 public function rules() 
 { 
  return [ 
   [["article_title","article_content"], "required"], 
   [["article_content","article_title","article_class"], "string"], 
   [["article_addtime", "article_updatetime"], "integer"], 
   [["article_title", "article_author"], "string", "max" => 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"]); 
 } 
... 
} 

3、在ArticleSearch中添加的查询和关联内容，代码#注释部分

class ArticleSearch extends Article 
{ 
 #关联查询1：这里加上被关联字段 
 public $class_name; 
... 
 public function rules() 
 { 
  return [ 
   [["id", "article_addtime", "article_updatetime"], "integer"], 
   [["article_title", "article_content", "article_class", "article_author"], "safe"], 
   #关联查询2：这里加上safe验证，表示该表单字段无验证规则 
   ["class_name","safe"], 
  ]; 
 } 
... 
 public function search($params) 
 { 
  $query = Article::find(); 
 
  // 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", "article_title", $this->article_title]) 
   ->andFilterWhere(["like", "article_content", $this->article_content]) 
   ->andFilterWhere(["like", "article_class", $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; 
 } 
... 
} 

4、在ArticleController中添加的分页内容，代码#注释部分

public function actionIndex() 
 {  
  $article = new Article(); 
  #查询 
  $searchModel = new ArticleSearch(); 
  $dataProvider = $searchModel->search(Yii::$app->request->queryParams); 
  #分页 
  $dataProvider->pagination = ["pagesize" => "3"]; 
  return $this->render("index", [ 
   "dataProvider" => $dataProvider, 
   "model" => $article, 
   "searchModel" => $searchModel, 
  ]); 
 } 

5、在index view中添加的表单内容，代码#注释部分

<?= GridView::widget([ 
 "dataProvider" => $dataProvider, 
 #查询表单 
 "filterModel" => $searchModel, 
 "columns" => [ 
  [ 
   "class" => "yiigridSerialColumn", 
   "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_title", 
  "article_addtime:datetime", 
  // "article_updatetime:datetime", 
  // "article_author", 
  [ 
   "class" => "yiigridActionColumn", 
   "header" => "操作", 
  ], 
 ], 
]); ?> 

以上步骤完成结果如图：

总结

以上就是这篇文章的全部内容了，希望本文的内容对大家的学习或者工作能带来一定的帮助，如果有疑问大家可以留言交流，谢谢大家对网页设计的支持。