ValidationRule<T> class abstract

Represents a validation rule that can be applied to a form field.

This abstract class defines the structure for creating custom validation rules for form fields.

Implementers

• Alpha
• AlphaDash
• AlphaNum
• Between
• Boolean
• Date
• DateAfter
• DateBefore
• Different
• Digits
• DigitsBetween
• Email
• FileSizeRule
• FileTypeRule
• InList
• Integer
• IsFalse
• IsTrue
• MaxLength
• MaxSelected
• MaxValue
• MinLength
• MinSelected
• MinValue
• NotInList
• Numeric
• Optional
• PhoneNumber
• RangeSelected
• Regex
• Required
• RequiredIf
• Same
• Size
• Url

Constructors

ValidationRule(String? _message)

Creates a new instance of ValidationRule.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

l10n → ValidatorLocalizations

The ValidatorLocalizations instance used for localization of validation messages. It's obtained through a service locator (sl) for convenience.

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

message(String fieldName) → String

Retrieves the validation message to be displayed.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

validate(T value, Map<String, FormFieldState> fields) → bool

Validates the given value against the validation rule.

validatorMessage(String fieldName) → String

Retrieves the validator message for the field.

Operators

operator ==(Object other) → bool

The equality operator.

inherited