Yii框架表单模型和验证用法,yii框架表单模型
Yii框架表单模型和验证用法,yii框架表单模型
本文实例讲述了Yii框架表单模型和验证用法。分享给大家供大家参考,具体如下:
表单模型CFormModel绝大部分继承CModelCModel,由于表模型数据不需要持久化,所以主要在验证操作上。下面以框架脚手架生成的网站登录为例说明表单模型。
//模型中的验证规则 public function rules() { return array( array('username, password', 'required'), array('rememberMe', 'boolean'), array('password', 'authenticate'), ); }
$model=new LoginForm;//创建一个登录表单模型 $model->attributes=$_POST['LoginForm'];//传入登录数据 CModel->setAttributes($values,$safeOnly=true)//调用CModel的setter方法 //返回model中relues中定义的安全数据,经过下面的调用流程获取一个验证器集合 //每个验证器由CValidator::createValidator($rule[1],$this,$rule[0],array_slice($rule,2)) CModel->getValidators() ->createValidators() ->rules() CModel->validate();//遍历验证器执行验证
验证器内部实现
表单模型核心部分在验证上,下面探讨其实现方式。
YII框架中验证以独立组件集合的形式存在,CValidator是所有验证器的基类。还是以登录验证为例。rules方法中包含required、boolean、authenticate三个验证器
public static function createValidator($name,$object,$attributes,$params=array()) { if(is_string($attributes)) $attributes=preg_split('/[\s,]+/',$attributes,-1,PREG_SPLIT_NO_EMPTY); if(isset($params['on'])) { if(is_array($params['on'])) $on=$params['on']; else $on=preg_split('/[\s,]+/',$params['on'],-1,PREG_SPLIT_NO_EMPTY); } else $on=array(); if(method_exists($object,$name)) { $validator=new CInlineValidator; $validator->attributes=$attributes; $validator->method=$name; if(isset($params['clientValidate'])) { $validator->clientValidate=$params['clientValidate']; unset($params['clientValidate']); } $validator->params=$params; if(isset($params['skipOnError'])) $validator->skipOnError=$params['skipOnError']; } else { $params['attributes']=$attributes; if(isset(self::$builtInValidators[$name])) $className=Yii::import(self::$builtInValidators[$name],true); else $className=Yii::import($name,true); $validator=new $className; foreach($params as $name=>$value) $validator->$name=$value; } $validator->on=empty($on) ? array() : array_combine($on,$on); return $validator; }
创建验证器流程
1、获取属性(array $attributes)和使用场景(array $on)
2、判断验证器是否存在model中,如果存在创建一个内联验证器CInlineValidator,如果不存在,执行第3步
3、如果验证器是框架自带的导入自带验证器,否则导入外部验证器,然后实例化并赋值。
当触发validate()时候,可能产生的错误将被存储在model中,可以通过调用 CModel::getErrors() 和CModel::getError() 提取这些错误信息
PS:小编在这里推荐一款本站的php格式化美化的排版工具帮助大家在以后的PHP程序设计中进行代码排版:
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更多关于Yii相关内容感兴趣的读者可查看本站专题:《Yii框架入门及常用技巧总结》、《php优秀开发框架总结》、《smarty模板入门基础教程》、《php日期与时间用法总结》、《php面向对象程序设计入门教程》、《php字符串(string)用法总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》
希望本文所述对大家基于Yii框架的PHP程序设计有所帮助。

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