Yii2 rules验证规则

去除首尾空白字符

['email', 'trim'] 或 ['email', 'filter', 'filter' => 'trim']

字段必填

['email', 'required']

赋予默认值

['age', 'default', 'value' => 20]

字符串长度

['email', 'string', 'min' => 3, 'max' => 20] 或 ['email', 'string', 'length' => [3, 20]]

格式类型验证

['age', 'integer'] <span style="font-family: Arial, Helvetica, sans-serif;">// 整数格式
['salary', 'double'] <span style="font-family: Arial, Helvetica, sans-serif;">// 浮点数格式
['temperature', 'number'] <span style="font-family: Arial, Helvetica, sans-serif;">// 数字格式
['isAdmin', 'boolean'] <span style="font-family: Arial, Helvetica, sans-serif;">// 布尔格式
['email', 'email'] <span style="font-family: Arial, Helvetica, sans-serif;">// email格式
['birthday', 'date'] <span style="font-family: Arial, Helvetica, sans-serif;">// 日期格式
['website', 'url', 'defaultScheme' => 'http'] <span style="font-family: Arial, Helvetica, sans-serif;">// URL格式

验证码

['verificationCode', 'captcha']

值在数据表中是唯一的

['email', 'unique', 'targetClass' => 'commonmodelsUsers']

值在数据表中已存在

['email', 'exist',     'targetClass' => 'commonmodelsUser',     'filter' => ['status' => User::STATUS_ACTIVE],     'message' => 'There is no user with such email.']

检查输入的两个值是否一致

['passwordRepeat', 'required'] // 必须要加上这一句 ['passwordRepeat', 'compare', 'compareAttribute' => 'password', 'operator' => '===']

数值范围检查

['age', 'compare', 'compareValue' => 30, 'operator' => '>=']
['level', 'in', 'range' => [1, 2, 3]]

使用自定义函数过滤

['email', 'filter', 'filter' => function($value) {     // 在此处标准化输入的email     return strtolower($value); }]

文件上传

['textFile', 'file', 'extensions' => ['txt', 'rtf', 'doc'], 'maxSize' => 1024 * 1024 * 1024]

图片上传

['avatar', 'image', 'extensions' => ['png', 'jpg'],     'minWidth' => 100, 'maxWidth' => 1000,     'minHeight' => 100, 'maxHeight' => 1000, ]

使用正则表达式

['username', 'match', 'pattern' => '/^[a-z]w*$/i']

提示：打印出

Validator::$builtInValidators

可以看到被支持的所有validators

Array
(
[boolean] => yii\validators\BooleanValidator
[captcha] => yii\captcha\CaptchaValidator
[compare] => yii\validators\CompareValidator
[date] => yii\validators\DateValidator
[default] => yii\validators\DefaultValueValidator
[double] => yii\validators\NumberValidator
[each] => yii\validators\EachValidator
[email] => yii\validators\EmailValidator
[exist] => yii\validators\ExistValidator
[file] => yii\validators\FileValidator
[filter] => yii\validators\FilterValidator
[image] => yii\validators\ImageValidator
[in] => yii\validators\RangeValidator
[integer] => Array
(
[class] => yii\validators\NumberValidator
[integerOnly] => 1
)

[match] => yii\validators\RegularExpressionValidator
[number] => yii\validators\NumberValidator
[required] => yii\validators\RequiredValidator
[safe] => yii\validators\SafeValidator
[string] => yii\validators\StringValidator
[trim] => Array
(
[class] => yii\validators\FilterValidator
[filter] => trim
[skipOnArray] => 1
)

[unique] => yii\validators\UniqueValidator
[url] => yii\validators\UrlValidator
[ip] => yii\validators\IpValidator
)