MaxLengthRule class

Validates that a field's value does not exceed a maximum length.

Implemented types
Annotations

Constructors

MaxLengthRule.new(int maxLength, {String? message})
Creates a maximum length validation rule. maxLength is the maximum allowed number of characters. message is the optional error message.
const

Properties

hashCode → int
The hash code for this object.
no setterinherited
maxLength → int
final
message → String
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

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(String? value, {BuildContext? context}) → String?
Validates the given value. Returns an error message String if validation fails, otherwise returns `null].
override

Operators

operator ==(Object other) → bool
The equality operator.
inherited