RequiredRule class

Ensures that value is not null and if it is a string that it is not empty after trimming.

Inheritance

• Object
• SuperFormFieldRule
• RequiredRule

Constructors

RequiredRule(String message)

Properties

hashCode → int

The hash code for this object.

no setter, inherited

message → String

final

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.

override

validate(dynamic value) → ValidationError?

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited