如何在不修改逻辑代码的情况下完美解决以上三个问题？看了下面的教程，一目了然！
以高级版2.0.6为例，打开/frontend/models/SignupForm.php
class SignupForm extends Model
{
public $username;
public $email;
public $password;
/**
* @inheritdoc
*/
public function rules()
{
return [
['username', 'filter', 'filter' => 'trim'],
['username', 'required'],
['username', 'unique', 'targetClass' => 'commonmodelsUser', 'message' => 'This username has already been taken.'],
['username', 'string', 'min' => 2, 'max' => 255],
['email', 'filter', 'filter' => 'trim'],
['email', 'required'],
['email', 'email'],
['email', 'string', 'max' => 255],
['email', 'unique', 'targetClass' => 'commonmodelsUser', 'message' => 'This email address has already been taken.'],
['password', 'required'],
['password', 'string', 'min' => 6],
];
}
只需修改rules规则即可完美实现
a.添加用户字符限制,6-16位
['username', 'string', 'min' => 6, 'max' => 16],
输入限制：用户名由字母，汉字，数字，下划线组成，且不能以数字和下划线开头。
['username', 'match','pattern'=>'/^[(x{4E00}-x{9FA5})a-zA-Z]+[(x{4E00}-x{9FA5})a-zA-Z_d]*$/u','message'=>'用户名由字母，汉字，数字，下划线组成，且不能以数字和下划线开头。'],
b.添加重复密码字段
public $repassword;
一般重复密码与密码的字段验证基本上是一致的，所以可以在password中添加repassword，并添加两次输入一致的限制
[['password','repassword'], 'required'], [['password','repassword'], 'string', 'min' => 6], ['repassword', 'compare', 'compareAttribute' => 'password','message'=>'两次输入的密码不一致！'],
c.添加验证码字段
public $verifyCode;
验证码有自带的扩展，只需添加以下代码即可
['verifyCode', 'captcha'],
注意：需要在对应的控制器中添加以下代码，本例为SiteController中添加
public function actions()
{
return [
'captcha' => [
'class' => 'yiicaptchaCaptchaAction',
'fixedVerifyCode' => YII_ENV_TEST ? 'testme' : null,
],
];
}
修改之后的规则
class SignupForm extends Model
{
public $username;
public $email;
public $password;
public $repassword;
public $verifyCode;
public function rules()
{
return [
['username', 'filter', 'filter' => 'trim'],
['username', 'required'],
['username', 'unique', 'targetClass' => 'commonmodelsUser', 'message' => '该用户名已被使用！'],
['username', 'string', 'min' => 6, 'max' => 16],
['username', 'match','pattern'=>'/^[(x{4E00}-x{9FA5})a-zA-Z]+[(x{4E00}-x{9FA5})a-zA-Z_d]*$/u','message'=>'用户名由字母，汉字，数字，下划线组成，且不能以数字和下划线开头。'],
['email', 'filter', 'filter' => 'trim'],
['email', 'required'],
['email', 'email'],
['email', 'string', 'max' => 255],
['email', 'unique', 'targetClass' => 'commonmodelsUser', 'message' => '该邮箱已经被注册！'],
[['password','repassword'], 'required'],
[['password','repassword'], 'string', 'min' => 6],
['repassword', 'compare', 'compareAttribute' => 'password','message'=>'两次输入的密码不一致！'],
['verifyCode', 'captcha'],
];
}
....
验证一下效果：
