查询父类的N个子类信息
#获取子集全部id
public function getWhereDepartmentSon($department_id,$shouci=true){
$this->erp_department = new model()
查询父类的N个子类信息
#获取子集全部id
public function getWhereDepartmentSon($department_id,$shouci=true){
$this->erp_department = new model()