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

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

class ProjectModel extends CommonModel{
    protected  $name = 'yoga_store_project';
    protected  $pk   = 'project_id';

    public function coach()
    {
        return $this->hasMany(CoachProjectModel::class,'project_id','project_id');
    }

    public function schedulings()
    {
        return $this->hasMany(CoachSchedulingModel::class,'project_id','project_id');
    }
}