<?phpnamespace app\models;use yii\db\ActiveRecord;
use yii\data\ActiveDataProvider;class MyUser extends ActiveRecord
{//返回要操作的表名public static function tableName(){return '{{%user}}';}//设置规则//注意，如果没有给字段设置规则，GridView的筛选项是不会出现的public function rules(){return [[['id', 'name', 'sex', 'age'], 'trim'],[['id', 'sex', 'age'], 'integer'],['name', 'string'],];}//查询public function search($params){//首先我们先获取一个ActiveQuery$query = self::find();//然后创建一个ActiveDataProvider对象$provider = new ActiveDataProvider([//为ActiveDataProvider对象提供一个查询对象'query' => $query,//设置分页参数'pagination' => [//分页大小'pageSize' => 3,//设置地址栏当前页数参数名'pageParam' => 'p',//设置地址栏分页大小参数名'pageSizeParam' => 'pageSize',],//设置排序'sort' => [//默认排序方式'defaultOrder' => ['id' => SORT_DESC,],//参与排序的字段'attributes' => ['id', 'name', 'sex', 'age'],],]);//如果验证没通过，直接返回if (!($this->load($params) && $this->validate())) {return $provider;}//增加过滤条件$query->andFilterWhere(['id' => $this->id])->andFilterWhere(['like', 'name', $this->name])->andFilterWhere(['sex' => $this->sex])->andFilterWhere(['age' => $this->age]);return $provider;}
}

<?phpnamespace app\controllers;use YII;
use yii\web\Controller;
use app\models\MyUser;class TestController extends Controller
{public function actionTest(){$user = new MyUser();//调用模型search方法，把get参数传进去$provider = $user->search(YII::$app->request->get());return $this->render('test', ['model' => $user,'provider' => $provider,]);}
}

<?php
use yii\helpers\Url;
use yii\helpers\Html;
use yii\grid\GridView;
?><div id="page-wrapper"><div class="row"><div class="col-lg-12"><button class="btn btn-primary" id="showSelBtn">显示我选中的</button></div></div><div class="row"><div class="col-lg-12"><?php echo GridView::widget([//设置GridView的ID'id' => 'myUserGridView',//设置数据提供器'dataProvider' => $provider,//设置筛选模型'filterModel' => $model,'columns' => [//复选框列['class' => 'yii\grid\CheckboxColumn'],//显示序号列['class' => 'yii\grid\SerialColumn'],[//设置字段显示标题'label' => 'ID',//字段名'attribute' => 'id',//格式化'format' => 'raw',//设置单元格样式'headerOptions' => ['style' => 'width:120px;',],],['label' => '姓名','attribute' => 'name','format' => 'raw',],['label' => '头像','attribute' => 'head_img','format' => 'raw',//通过该返回值，我们可以任意控制列数据的显示//$data指向的是当前行的数据结果集'value' => function ($data) {return '<img src="' . '/' . ltrim($data->head_img, '/') . '" width="60px">';},],['label' => '性别',//设置筛选选项'filter' => [0 => '男', 1 => '女'],'attribute' => 'sex','format' => 'raw','value' => function ($data) {return ($data->sex == 0) ? '男' : '女';}],['label' => '年龄','attribute' => 'age','format' => 'raw',],['header' => '操作','class' => 'yii\grid\ActionColumn',//设置显示模板'template' => '{upd} {del}',//下面的按钮设置，与上面的模板设置相关联'buttons' => ['upd' => function ($url, $model, $key) {return '<a href="' . Url::toRoute(['test/upd', 'id' => $key]) . '" class="btn btn-warning">修改</a>';},'del' => function ($url, $model, $key) {return '<a href="' . Url::toRoute(['test/del', 'id' => $key]) . '" class="btn btn-danger">删除</a>';},],],],]); ?></div></div>
</div><?php echo Html::jsFile('@web/js/jquery-3.3.1.min.js'); ?>
<script type="text/javascript">$("#showSelBtn").on("click", function () {var keys = $("#myUserGridView").yiiGridView('getSelectedRows');alert(keys);});
</script>