talent_map/server/api/modules/v1/models/Comment.php

<?php
/**
 * Created by PhpStorm.
 * User:  NODELOG
 * Date: 2017/3/8
 * Time: 下午11:21
 */
namespace api\modules\v1\models;


use api\common\models\User;
use common\helpers\Util;
use yii\helpers\ArrayHelper;

class Comment extends \common\models\Comment
{
    public function getAuthor()
    {
        return $this->hasOne(User::className(), ['id' => 'user_id']);
    }

    public function fields()
    {
        return ArrayHelper::merge(parent::fields(), [
            'author',
            'created_at' => function ($model) {
                /* @var self $model */
                return Util::formatTime($model->created_at);
            },
        ]);

    }

    public function extraFields()
    {
        return [
            'sons'
        ];
    }
}