<?php
class PostTest extends CDbTestCase{
public $ fixtures =array (
'posts' = > 'Post',
'tags' = > 'Tag',
);
public function testFindPost( ){
//调用 find 时，我们使用 $condition 和 $params指定查询条件。
//此处 $condition 可以是 SQL 语句中的 WHERE 字符串，$params则是一个参数数组，
//其中的值应绑定到 $condation中的占位符。
$ post = $ this - > posts('post1' ) ;
$ fPost = Post: : model( ) - >find( 'id = :id' , array ( ':id' = > $ post -> id) ) ;
//SELECT * FROM `tbl_post` `t` WHERE `t`.`id`=1LIMIT 1
$ fPost = Post: : model( ) - >find( '?' , array ( $ post - > id) );
//SELECT * FROM `tbl_post` `t` WHERE '1' LIMIT1
//find返回符合条件的第一条记录，而findAll会返回符合条件的所有行。
$ fAllPost = Post: : model( ) - >findAll( 'id = :id' , array ( ':id' = > $ post -> id) ) ;
//SELECT * FROM `tbl_post` `t` WHERE id ='1'
$ fAllPost = Post: : model( ) - >findAll( '?' , array ( $ post - > id) );
//SELECT * FROM `tbl_post` `t` WHERE'1'
$ criteria = new CDbCriteria( );
$ criteria - > condition = 'id =:id AND title = :title' ;
$ criteria - > params = array (':id' = > $ post - > id, ':title' => $ post - > title);
$ fPost = Post: : model( ) - >find( $ criteria ) ;
//SELECT * FROM `tbl_post` `t` WHERE id = '1'AND title = 'post1' LIMIT 1
$ fAllPost = Post: : model( ) - >findAll( $ criteria ) ;
//SELECT * FROM `tbl_post` `t` WHERE id = '1'AND title = 'post1'
$ fPost = Post: : model( ) - >findByPk( $ post - > id, 'title = :title' , array (':title' = > $ post - > title) );
//SELECT * FROM `tbl_post` `t` WHERE `t`.`id`=1AND (title = 'post1') LIMIT 1
$ fPost = Post: : model( ) - >findByAttributes( array ( 'id' = > $ post -> id, 'title' = > $ post -> title) ) ;
//SELECT * FROM `tbl_post` `t` WHERE`t`.`id`='1' AND `t`.`title`='post1' LIMIT1
$ sql = 'SELECT id, title from {{post}} WHERE id= ? AND title = ?' ; //必须设置表前缀
$ fPost = Post: : model( ) - >findBySql( $ sql , array ( $ post - > id, $ post -> title) ) ;
$ sql = 'SELECT id, title from {{post}} WHERE id= :id AND title = :title' ;
$ fPost = Post: : model( ) - >findBySql( $ sql , array ( ':id' = > $ post -> id, ':title' = > $ post -> title) ) ;
//如果没有找到符合条件的行，find返回null，findAll 返回array()。
}
public function testCountPost( ){
$ post = $ this - > posts('post1' ) ;
$ cPost = Post: : model( ) - >count ( '?' , array ( $ post - > title) );
//SELECT COUNT(*) FROM `tbl_post` `t` WHERE'post1' 无意义
$ cPost = Post: : model( ) - >countByAttributes( array ( 'title' = > $ post -> title, 'content' = > $ post ->content) ) ;
//SELECT COUNT(*) FROM `tbl_post` `t` WHERE`t`.`title`='post1' AND`t`.`content`='content1'
$ sql = "SELECT title from {{post}} WHERE titleLIKE '%" . $ post - > title . "%'";
$ cPost = Post: : model( ) - >countBySql( $ sql ) ;
//至少有一条记录符合查询条件
$ ePost = Post: : model( ) - >exists( 'id = ? AND title = ?' , array ( $ post -> id, $ post - > title) );
//SELECT 1 FROM `tbl_post` `t` WHERE id = '1' AND title = 'post1' LIMIT 1
}
public function testUpdatePost( ){
$ post = $ this - > posts('post1' ) ;
$ post - > title = 'update post1' ;
if ( $ post - > isNewRecord){
$ post -> create_time = $ post - >update_time = new CDbexpression_r( 'NOW()' );
//UPDATE`tbl_post` SET `id`=1, `title`='update post 1',`content`='content1', `tags`=NULL, `status`=1, `create_time`=NULL,`update_time`=1302161123, `author_id`=1 WHERE`tbl_post`.`id`=1
} else {
$ post -> update_time = time ( ) ;
}
$ post - > save( );
//updateAll
$ sql = "SELECT * FROM {{post}} WHERE title LIKE'%" . "post" . "%'" ;
//SELECT * FROM tbl_post WHERE title LIKE'%post%'
$ post = Post: : model( ) - >findBySql( $ sql ) ;
$ post - > updateAll( array ('update_time' = > time ( ) ) , 'id <=?' , array ( '2' ) ) ;
//UPDATE `tbl_post` SET `update_time`=1302161123WHERE id <= '2'
$ post - > updateByPk( $ post -> id + 2, array ( 'title' = > 'updatepost 3' ) ) ;
$ post - > updateByPk( $ post -> id, array ( 'title' = > 'updatepost 3' ) , 'id = ?' , array ( '3' ) ) ;
//updateCounter更新某个字段的数值，一般是计数器(+/-)。
$ tag = $ this - > tags( 'tag1' );
$ uTag = Tag: : model( ) - >updateCounters( array ( 'frequency' = > '3' ) , 'id= ?' , array ( '1' ) ) ;
}
public function testDeletePost( ){
$ post = $ this - > posts('post1' ) ;
$ post - > delete ( );
$ this - > assertEquals( 1, $post - > id) ;//删除数据库表中的记录，但是post的这个实例还在。
$ post2 = Post: : model( ) - >findByPk( $ post - > id) ;
$ this - > assertEquals( null , $post2 ) ;
//多条记录
$ delete = Post: : model( ) - >deleteAll( '(id = ? AND title = ?) || (id = \'4\') ' , array ( 1,'post 1' ) ) ;
$ this - > assertEquals( 0, $delete ) ;
$ delete = Post: : model( ) - >deleteAllByAttributes( array ( 'id' = > '2' ) ,'content = ?' , array ( 'content2') ) ;
//DELETE FROM `tbl_post` WHERE`tbl_post`.`id`='2' AND (content ='content2')
$ this - > assertEquals( 1, $delete ) ;
}
}
? >
原文：http://xiang.lf.blog.163.com/blog/static/1277333222012428104111302/
