bsh_info/app/common/model/PostFavorite.php

<?php

namespace app\common\model;

use support\Model;

class PostFavorite extends Model
{
    /**
     * The connection name for the model.
     *
     * @var string|null
     */
    protected $connection = 'mysql';
    
    /**
     * The table associated with the model.
     *
     * @var string
     */
    protected $table = 'post_favorite';

    /**
     * The primary key associated with the table.
     *
     * @var string
     */
    protected $primaryKey = 'id';

    /**
     * Indicates if the model should be timestamped.
     *
     * @var bool
     */
    public $timestamps = true;
    
    
    protected $dateFormat = 'U';

    /**
     * 允许自动填充模型字段
     */
    protected $fillable = ['id', 'post_id', 'user_id', 'created_at', 'updated_at'];

    /**
     * 不允许自动填充模型字段
     */
    protected $guarded = [];

    public function post()
    {
        return $this->hasOne('app\common\model\Post', 'id', 'post_id');
    }

    protected function serializeDate(\DateTimeInterface $date)
    {
        // 此方法决定了模型日期字段序列化时的默认格式
        return $date->format('Y-m-d H:i:s');
    }
}