yii2.0 GridView 自定按钮操作

GridView::widget([
        'dataProvider' => $dataProvider,
        'filterModel' => $searchModel,
        'columns' => [
            //['class' => 'yii\grid\SerialColumn'],
			
            'extract_id',
    		[
    		'attribute' => 'user_type',
    		'filter'=>
    		Html::activeDropDownList ( $searchModel, 'user_type', Extract::$userTypes,
    				[ 'class' => 'form-control','prompt' => '请选择' ] ),
    				'label'=>'用户类型',
    				'value'=>function ($model) {return Extract::$userTypes[$model->user_type];},
    				'headerOptions' => ['width' => '60'],
    		],
            'money',
            'bank_code',
            'bank_type',
            'account_name',
    		[
    		'attribute' => 'add_time',
    		'label'=>'申请时间',
    		'value'=>
    		function($model){
    			return  date('Y-m-d H:i:s',$model->add_time);   //主要通过此种方式实现
    		},
    		//'headerOptions' => ['width' => '160'],
    		],
			[
			'attribute' => 'check_time',
			'label'=>'处理时间',
			'value'=>
			function($model){
				return  date('Y-m-d H:i:s',$model->check_time);   //主要通过此种方式实现
			},
			//'headerOptions' => ['width' => '160'],
			],
            [
            'attribute' => 'status',
            'filter'=>
            Html::activeDropDownList ( $searchModel, 'status', Extract::$statuses,
            		[ 'class' => 'form-control','prompt' => '请选择' ] ),
            		'label'=>'用户类型',
            		'value'=>function ($model) {return Extract::$statuses[$model->status];},
            		'headerOptions' => ['width' => '60'],
            ],
            [
              'class' => 'yii\grid\ActionColumn',
              'template' => '{view} {process} {pass} {refuse}',
              'buttons' => [

                // 下面代码来自于 yii\grid\ActionColumn 简单修改了下
                'view' => function ($url, $model, $key) {
                  $options = [
                    'title' => Yii::t('yii', 'View'),
                    'aria-label' => Yii::t('yii', 'View'),
                    'data-pjax' => '0',
                  ];
                  return Html::a('<span class="glyphicon glyphicon-eye-open"></span>', $url, $options);
                },
                'process' => function($url, $model, $key){
                    $html = '';
                    if($model->status==Extract::STATUS_APPLYING){
                        $html = Html::a('审核', $url, [
                            'title' => '审核',
                            'data-confirm' => '确定通过吗？',
                            'data-method' => 'post',
                            'data-pjax' => '0',
                        ]);
                    }
                    return $html;
                },
                'pass' => function($url, $model, $key){
                    $html = '';
                    if($model->status==Extract::STATUS_APPLYING){
                        $html = Html::a('<span class="glyphicon glyphicon-ok"></span>', $url, [
                            'title' => '通过',
                            'data-confirm' => '确认通过吗？',
                            'data-method' => 'post',
                            'data-pjax' => '0',
                        ]);
                    }
                    return $html;
                },
                'refuse' => function($url, $model, $key){
                    $html = '';
                    if($model->status==Extract::STATUS_APPLYING){
                        $html = Html::a('<span class="glyphicon glyphicon-remove"></span>', $url, [
                            'title' => '拒绝',
                            'data-confirm' => '确定拒绝吗？',
                            'data-method' => 'post',
                            'data-pjax' => '0',
                        ]);
                    }
                    return $html;
                },
              ]
            ],
        ],
    ]);