2

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
4

2 回答 2

6

您需要在表格上创建id列primary key，它会修复。autoincrementtbl_sys_project_amenity

于 2013-08-03T11:47:55.400 回答
0

当你使用缓存数据库替换配置数据库

$db['default']['cache_on'] = TRUE; $db['default']['cachedir'] = APPPATH 。'缓存';

至

$db['default']['cache_on'] = false; $db['default']['cachedir'] = '';

于 2016-01-26T07:53:51.530 回答