ValidationRule class

A validation rule for form fields.

Constructors

ValidationRule(String? validator(String?))

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

validator → String? Function(String?)

final

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

email([String message = 'Enter a valid email address']) → ValidationRule

minLength(int length, [String? message]) → ValidationRule

required([String message = 'This field is required']) → ValidationRule