<?php namespace backend/controllers;header("Content-type:text/html;charset=utf-8");use Yii;use yii/web/Controller; //超级控制器类use backend/models/BooksInfo; //表Model类use backend/models/InfoSearch; //引入搜索Model类use yii/data/ActiveDataProvider; //小部件数据源类use yii/grid/GridView; //查询小部件/** *@abstract BooksController *@author NING <[email ning@163.com]> *@version [version 1.0] [书籍管理] */class BooksInfoController extends Controller{  //书籍列表 public function actionIndex() { $searchModel = new InfoSearch(); //实例化searchModel[搜索Model] if(!empty($_GET['InfoSearch'])){  $getSearch = Yii::$app->request->get(); //接收搜索字段  $data = $searchModel->search($getSearch); }else{  //小部件查询数据  $data = new ActiveDataProvider([    'query' => BooksInfo::find(), //查询数据    'pagination' => [      'pageSize' => 2, //每页显示条数    ],    'sort' => [      'defaultOrder' => [        // 'created_at' => SORT_DESC,        'id' => SORT_ASC, //[字段]设置排序・      ]    ],  ]); } //传送查询数据、搜素Model return $this->render('index',['data'=>$data,'searchModel'=>$searchModel]); }?>

<?php namespace backend/models;use Yii;use yii/db/ActiveRecord;/** *@abstract [BookForm] *@author NING <[email ning@163.com]> *@version [vector 1.0] [书籍详情模型] */class BooksInfo extends ActiveRecord{ /**   * @设置表名   */  public static function tableName()  {    return '{{%books_info}}';  }  //关联表  public function getBooksType(){    // hasOne要求返回两个参数 第一个参数是关联表的类名 第二个参数是两张表的关联关系     // 这里id是books_type表的id, 关联books_info表的type_id     return $this->hasOne(BooksType::className(), ['id' => 'type_id']);  } public function attributeLabels() { return [  'id' => 'ID',  'book_name' => '书籍名称',  'book_face' => '书籍封面',  'type_id' => '书籍分类ID',  'type_name' => '书籍分类', ]; }}?>

<?phpnamespace backend/models; //命名空间use Yii;use yii/base/Model; //引入基类Modeluse yii/data/ActiveDataProvider;  //引入数据源类/** *@abstract [搜索Model] *@return [type] *@author NING <[email ning@163.com]> */// 注意:此处继承的是查询Model--->BooksInfoclass InfoSearch extends BooksInfo{  public $type_name; //定义属性变量  // 只有在 rules() 函数中声明的字段才可以搜索  public function rules()  {    return [      // [['book_name','type_name'], 'safe'],      [['type_name'], 'safe'],    ];  }  public function scenarios()  {    // 旁路在父类中实现的 scenarios() 函数    return Model::scenarios();  }  public function search($params)  {    $query = BooksInfo::find();    $dataProvider = new ActiveDataProvider([      'query' => $query,      'pagination' => [        'pageSize' => 1,      ],    ]);    /*这里的articlecategory是article模型里面关联的方法名，除了首字母，其他都要完全一样，否则会报错*/    $query->joinWith(['booksType']);    // 从参数的数据中加载过滤条件，并验证    if (!($this->load($params) && $this->validate())) {      return $dataProvider;    }    // 增加过滤条件来调整查询对象    $query->andFilterWhere(['like', 'book_name', $this->book_name]);    //添加关联字段过滤条件[注意:此处books_type.type_name中books_type为分类表名]    $query->andFilterWhere(['like', 'books_type.type_name', $this->type_name]);    return $dataProvider;  }}?>

<?php use yii/grid/GridView;use yii/data/ActiveDataProvider;use yii/grid/ActionColumn;use yii/helpers/Html;$this->title = '图书列表';?><!-- 面包屑 --><ol class="breadcrumb"> <li><a href="#" rel="external nofollow" rel="external nofollow" >Home</a></li> <li><a href="#" rel="external nofollow" rel="external nofollow" >图书信息</a></li> <li class="active">图书列表</li></ol><?phpecho GridView::widget([ 'dataProvider' => $data,  //数据源  'filterModel' => $searchModel, //搜索列 'columns' => [    // ['filterModel' => $searchModel],    ['class' => 'yii/grid/CheckboxColumn'], //复选框列    ['attribute' => 'id'],   ['attribute' => 'book_name',],    ['attribute' => 'book_face','content'=>function($model){     // 图片显示     return Html::img($model->book_face,['width'=>'50']);    }], [      'attribute' => 'type_name',      'value' => 'booksType.type_name', //两表联查[书籍类型]    ],    ['class' => 'yii/grid/ActionColumn','header'=>'操作'], //动作列 ],  'pager' => [//自定义分页样式以及显示内容    'prevPageLabel'=>'上一页',    'nextPageLabel'=>'下一页',    'firstPageLabel' => '第一页',    'lastPageLabel' => '最后一页',    'options'=>['style'=>'margin-left:200px;','class'=>"pagination"],    ],]);?>