//字段必填
[[‘username‘],‘required‘,‘message‘=>‘{attribute}不能为空!‘]
[[‘username‘,‘password‘], ‘required‘,‘message‘=>‘{attribute}不能为空!‘]


//去除首尾空白字符
[‘email‘, ‘trim‘]
[‘email‘, ‘filter‘, ‘filter‘ => ‘trim‘]


//赋予默认值
[‘age‘, ‘default‘, ‘value‘ => 18]


//字符串长度
[‘email‘, ‘string‘, ‘min‘ => 3, ‘max‘ => 20]
[‘email‘, ‘string‘, ‘length‘ => [3, 20]]

// 检查 "username" 是否为长度 4 到 24 之间的字符串
[‘username‘, ‘string‘, ‘length‘ => [4, 24]],


// 整数格式
[‘age‘, ‘integer‘]

// 浮点数格式
[‘salary‘, ‘double‘]

// 数字格式
[‘temperature‘, ‘number‘]

// 布尔格式
[‘isAdmin‘, ‘boolean‘]

// email格式
[‘email‘, ‘email‘]

// 日期格式
[‘birthday‘, ‘date‘]

// URL格式
[‘website‘, ‘url‘, ‘defaultScheme‘ => ‘http‘]

// 标记 "description" 为安全特性
[‘description‘, ‘safe‘],


//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‘]
[‘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‘]

yii2 model常用验证规则