FormValidators class

Utilities for combining validators.

Constructors

FormValidators()

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

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

compose(List<Validator> validators) → Validator

Runs each validator in validators in order and returns the first error message, or null when all pass.

optional(Validator validator) → Validator

Wraps validator so that empty input is considered valid.