ruiRoad_pro_v1.0/app/model/store/yoga/CoursePackageItemModel.php

<?php
namespace app\model\store\yoga;
use app\common\model\CommonModel;

class CoursePackageItemModel extends CommonModel{
    protected  $name = 'yoga_store_course_package_item';
    protected  $pk   = 'course_package_item_id';

    public function project()
    {
        return $this->hasOne(ProjectModel::class,'project_id','project_id');
    }
}