ArcoFormRule class

校验规则，对应官方 FormItem.rules 数组项的常用子集。

rules: const <ArcoFormRule>[
  ArcoFormRule.required(),
  ArcoFormRule.minLength(2),
]

Constructors

ArcoFormRule.custom(String? validator(Object? value), {String? message})

自定义校验：返回错误文案表示不通过，返回 null 表示通过。

const

ArcoFormRule.length(int value, {String? message})

精确长度。

const

ArcoFormRule.maxLength(int value, {String? message})

最大长度。

const

ArcoFormRule.minLength(int value, {String? message})

最小长度（按 String.length 计）。

const

ArcoFormRule.pattern(RegExp pattern, {String? message})

正则匹配（空值跳过，交由必填规则处理）。

const

ArcoFormRule.required({String? message})

非空校验（字符串去首尾空格后非空）。

const

Properties

hashCode → int

The hash code for this object.

no setter, inherited

isRequired → bool

是否为必填规则（决定标签前的红色星标，同官方 isRequiredRule）。

final

length → int?

final

maxLength → int?

final

message → String?

final

minLength → int?

final

pattern → RegExp?

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

validator → String? Function(Object? value)?

自定义校验函数。

final

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

validate(Object? value, String label) → String?

校验 value，返回错误文案；null 表示通过。label 用于默认文案。

Operators

operator ==(Object other) → bool

The equality operator.

inherited