我在此代码中收到“致命错误:无法在第 1540 行访问 /Applications/XAMPP/xamppfiles/htdocs/cityland/application/libraries/Grocery_CRUD.php 中的空属性”错误
public function projectAmenities()
{
$crud = new grocery_CRUD();
$crud->set_theme('datatables');
$crud->set_table('tbl_sys_project_amenity');
$crud->set_relation('amenity','tbl_sys_amenities','amenity');
$crud->set_relation('project_id','tbl_sys_projects','project_id');
$crud->set_subject('Amenities');
$output = $crud->render();
$this->projectAmenitiesOutput($output);
}
tbl_sys_project_amenity 是 tbl_sys_amenities 和 tbl_sys_projects 的辅助实体。此错误仅显示在此特定表中。
我的表结构
tbl_sys_amenities
amenity
description
tbl_sys_projects
project_id
title
location
tbl_sys_project_amenity
project_id
amenity
quantity