yii'-GridView

        'dataProvider' => $dataProvider,
        'filterModel' => $searchModel, //table第二行生成查询表单
        'columns' => [
            ['class' => 'yii\grid\SerialColumn'],

//            'id',
            [
               'attribute'=>'id',
               'contentOptions'=>['width'=>'30px']  //设置html属性
            ],
            'name',
//            'author_id', //不想显示id,想显示作者name
            [
//                'attribute'=>'author_id',
                //关联字段搜索author_id(其他表中的字段,但是要根据name搜索):
                //1 想按照author.name搜索,就自定义一个冗余字段在searchModel中添加属性"authorName",这里也不在用author_id
                'attribute'=>'authorName',
                /*2 在serchModel中新添加字段如下:

                public function attributes()
                {
                    return array_merge(parent::attributes,['authName']);
                }
                 3 在serchModel中的rules规则中添加字段authName,此时表单搜索框已经出来了,但是还不能搜索

                 4 在searchMode最下方添加关联查询如下:
                    $query->join('INNER JOIN','Adminer','post.author_id = Adminer.id');
                    $query->andFilterWhere(['like','Adminer.nickname',$this->authorName]);
                    [注]:这里要注意,如果两个表字段相同,要指定"表名.属性",否则查询就会报错

                 5 让authorName可以排序
                    $dataProvider->sort->attributes['authorName'] =
                    [
                        'asc'=>['Adminer.nickname'=>SORT_ASC], //可以升序
                        'desc'=>['Adminer.nickname'=>SORT_DESC],//可以降续
                    ]
                */

                'value'=>'author.name' //关联的作者表author
            ],

//            'content', //截取几个字段显示
            [
                'attribute'=>'content',
                'value'=>function($model,$key,$index,$column){
                    //$model:当前行对象;$key:当前行的键值;$index:当前行的索引;$column:数据列对象
                    $tmpStr = strip_tags($model->content);
                    $tmp_len = mb_strlen($tmpStr,'utf-8');
                    return mb_substr($tmpStr,0,20,'ytf-8').($tmp_len > 20 ? '...': '');
                }
            ],
            [
                'attribute' => 'status' , //下拉菜单
                'value'=>'status0.name',
                'filter'=>[1=>'草稿箱',2=>'已发布'], //key=>val 就会形成下拉菜单筛选
                'contentOptions'=>function($model){ //添加html属性以及class
                    return $model->status == 1 ? ['class'=>'bg-danger'] : [];
                }
            ],
            'content:ntext',
//            'created_at',
            [
                'attribute'=>'created_at',
                'format'=>['date','php:Y-m-d H:i:s']
            ],
            'updated_at',

//            ['class' => 'yii\grid\ActionColumn'], //负责动作按钮的,这是一种简写:只展示"查看","修改","删除"
            [
                'class' => 'yii\grid\ActionColumn',
                'template'=>'{view}{update}{delete}{customer}',  //添加自己扩展的动作
                'button'=>[
                    'customer'=>function($url,$model,$key){
                        //$url:按钮对应的url;$model:当前模对象的模型;$key:模型的键

                        $options = [
                            'title'=>Yii::t('yii','审核'), //Yii::t(): 多语言翻译
                            'aria-label'=>Yii::t('yii','审核'),
                            'data-confitm'=>Yii::t('yii','你确定执行此操作嘛?'),
                            'data-method'=>'post',
                            'data-pjax'=>0,
                            //如果action是别的控制器的,就指定controller
                            ];
                        return Html::a('',$url,$options);
                    }
                ]
            ]
        ]
    ]); ?>