Validator class abstract

Abstract class for input validation

Implementers

• CallbackValidator
• ChainedValidator
• ChainedValidator
• ConfirmPasswordValidator
• EmailAddressValidator
• ListValidator
• MinLengthValidator
• NumberValidator
• PasswordValidator
• RegexValidator

Constructors

Validator()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

isValid → bool

Return the state of the validator after the most recent validation.

no setter

longErrorMessage → String?

Return a long error message if the input is invalid

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

shortErrorMessage → String?

Return a short error message if the input is invalid

no setter

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(BuildContext context, String fieldName, String? value) → String?

Function to validate the form input. It takes a string and returns an String error message if the input is invalid or null if the input is valid.

Operators

operator ==(Object other) → bool

The equality operator.

inherited