Validator<T extends Object?> class abstract

The Validator class is used by the Field class to validate its input.

Implementers

• FormValidator
• MinimumStringLengthValidator
• ValidatorWithStaticError

Constructors

Validator()

const

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

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(T value) → String?

This method should return null if the field is valid, a string corresponding to the error otherwise.

Operators

operator ==(Object other) → bool

The equality operator.

inherited