ThinkPHP学习笔记1-----CURD
ThinkPHP为我们提供非常快捷的方法执行curd操作,怎么用还是看手册,这里主要写一点我自己经验
例如
(一) 访问:http://localhost:1243/think/index.php/Form/show 显示数据库列表函数
代码如下
public function show(){ //进行输出表格 $user=M("user"); $userArr=$user->select(); //dump($userArr); $this->assign("userArr",$userArr); $this->display(); }
1.在M()函数中,user代表的是表名,也就是数据库中的user表.如果无法实例化对象,检查:
(1).是否在conf/config.php中设置了 ‘DB_DSN’,‘DB_PREFIX’(如果表名存在前缀);
(2)是否存在 表前缀_user表
2.display(0是存在于Action类中的函数,就像Smarty,ThinkPHP 的Action相当于smarty中的实例化的$smarty类.如果未指定display页面,则会默认寻找tpl/Form/show.html
(二). 访问:http://localhost:1243/think/index.php/Form/add 新增数据到数据库中
代码如下:
//添加数据 public function add(){ // $model=D("Form"); $user=M("user"); //验证规则可以写在action中 $validate = array( array('name','require','用户名不能为空'), // 为空验证 array('name','','用户名已存在','1','unique','1'), array('mail','email','邮箱格式错误'), ); //将规则写入model $user->setProperty("_validate",$validate);
if(!isset($_POST['sub'])){ $this->display(); exit; } //表单提交 //unset($_POST['sub']); //create函数其实是对数据库进行一次验证,在数组里面有的列才会存在在create所返回的数组中,所以可以省去unset操作 //例如在数据库表中,不存在列 mail,但是表单提交上来的有mail,create进行验证后返回的数组中不会包含mail $res=$user->create(); if(!$res){ //错误提示 $error=$user->getError(); $this->assign("error",$error); $this->display(); exit; } $result=$user->add(); if($result>0){ $this->success("添加成功","__URL__/show"); }else{ $this->error("添加失败,请重试"); } }
(1). D()函数在3.1以后无法进行单独的表设置,如果在Model文件夹下定义了一个FormModel.class.php,再用D("Form")实例化该Model,会提示数据表 Form不存在
暂未找到方法,请大家赐教
(2).进行自动验证的时候,可以将验证的规则写在action中,如上代码
倘若非要写在一个自定义的Model中,则如下
protected $_validate=array( //验证规则可以写在action中 array('name','require','用户名不能为空'), // 为空验证 array('name','','用户名已存在','1','unique','1'), array('mail','email','邮箱格式错误'), );
(3).关于create函数和add函数,见如上程序代码中注释
欢迎提出问题,共同解决。

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