crm/app/model/BuildingUrge.php

<?php

namespace app\model;

use think\Model;

class BuildingUrge extends Model
{
    public function building(){
        return $this->hasOne(Building::class, 'id', 'building_id');
    }
    public function user(){
        return $this->hasOne(User::class, 'id', 'urge_uid');
    }
    public function employee(){
        return $this->hasOne(Employee::class, 'id', 'employee_id');
    }
}