5-關聯模型

一、 SectionModel.class.php

    要繼承 RelationModel，映射模型和類名寫對應上數據表和action類

 1 <?php
 2     class SectionModel extends RelationModel{
 3         public $_link=array(
 4             'Category'=>array(
 5                 'mapping_type'=>HAS_MANY,  //關聯關係 1：n
 6                 'class_name'=>'Category',    //對應類名
 7                 'foreign_key'=>'sectionid',     //外鍵，分類表的字段
 8                 'mapping_name'=>'category',    //映射模型
 9                 'mapping_order'=>'sectionid desc', //映射排序
10             ),
11             'Article'=>array(
12                 'mapping_type'=>HAS_MANY,
13                 'class_name'=>'Article',
14                 'foreign_key'=>'sectionid',
15                 'mapping_name'=>'article',
16             
17             ),
18         );
19         

二、SectionAction.class.php  

　　開啓關聯relation(true)->

<?php
        class SectionAction extends CommonAction{
            public function index(){
                $sec=new SectionModel();
//Relation(true)會關聯保存User模型定義的全部關聯數據
//-----查詢 
//dump($sec->relation(true)->find(3));


/*----建立數據
                2.INSERT INTO `joys_section` (`title`) VALUES ('自定義單元') [ RunTime:0.001198s ]
3.SHOW COLUMNS FROM `joys_category` [ RunTime:0.005667s ]
4.INSERT INTO `joys_category` (`title`,`alias`,`sectionid`) VALUES ('自定義分類1','test11',8) [ RunTime:0.000496s ]
5.INSERT INTO `joys_category` (`title`,`alias`,`sectionid`) VALUES ('自定義分類12','test21',8) [ RunTime:0.000302s ]
                
                
                $data['title']="自定義單元";
                $data['category']=array(
                    array('title'=>'自定義分類1','alias'=>'test11'),
                    array('title'=>'自定義分類12','alias'=>'test21')
                    );
                $sec->relation(true)->add($data);*/
/*----更新數據    
/*SHOW COLUMNS FROM `joys_section` [ RunTime:0.007477s ]
UPDATE `joys_section` SET `id`=8,`title`='自定義單元' WHERE ( id=8 ) [ RunTime:0.002553s ]
SHOW COLUMNS FROM `joys_category` [ RunTime:0.008511s ]
INSERT INTO `joys_category` (`title`,`alias`,`sectionid`) VALUES ('自定義分類88','test',8) [ RunTime:0.000866s ]
SHOW COLUMNS FROM `joys_article` [ RunTime:0.011497s ]
                
                $data['id']=8;    //更新的時候要加上$data['id']=8;，否則從表更新不了
                $data['title']="自定義單元";
                $data['category']=array(
                    array('title'=>'自定義分類88','alias'=>'test')
                    );
            $sec->relation(true)->where('id=8')->save($data);
            *
            */        
                
                
//---------刪除                
/*DELETE FROM `joys_section` WHERE ( `id` = 8 ) [ RunTime:0.002513s ]
SHOW COLUMNS FROM `joys_category` [ RunTime:0.013709s ]
DELETE FROM `joys_category` WHERE ( `sectionid` = 8 ) [ RunTime:0.000967s ]
SHOW COLUMNS FROM `joys_article` [ RunTime:0.014401s ]
DELETE FROM `joys_article` WHERE ( `sectionid` = 8 ) [ RunTime:0.001064s ]
                    
                $sec->relation(true)->delete(8);*/
            $data['id']=8;    //更新的時候要加上$data['id']=8;，否則從表更新不了
                $data['title']="自定義單元";
                $data['category']=array(
                    array('title'=>'自定義分類88','alias'=>'test')
                    );
            $sec->relation(true)->where('id=8')->save($data);    
                
                
                
                $this->display();    
            }