YII2框架中ActiveDataProvider与GridView的配合使用操作示例

<?php

namespace 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;
  }
}

<?php

namespace 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' =  $key]) . '" rel="external nofollow" class="btn btn-warning" 修改</a ';
},
'del' =  function ($url, $model, $key) {
return '<a href="' . Url::toRoute(['test/del', 'id' =  $key]) . '" rel="external nofollow" 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