Yii2-GridView自定义数据列

1. 在模型中增加需要的字段，关联查询

public function getuser(){
    return $this->hasOne(User::className(), ['code'=>'code']);
}

2. 在显示的网页显示需要的字段

<?= GridView::widget([
    'dataProvider' => $dataProvider,
    'filterModel' => $searchModel,
    'columns' => [
        ['class' => 'yii\grid\SerialColumn'],
        'code',
        'name',
        'content',
        'user.username',
        ['class' => 'yii\grid\ActionColumn'],
    ],
]); ?>