FormKey<T> class

A key that uniquely identifies a form field and its type.

FormKey extends LocalKey and is used throughout the form system to reference specific form fields. It includes type information to ensure type-safe access to form values.

Example:

const emailKey = FormKey<String>('email');
const ageKey = FormKey<int>('age');

Inheritance

• Object
• Key
• LocalKey
• FormKey

Implementers

• DynamicFormKey

Constructors

FormKey(Object key)

Creates a FormKey with the specified key object.

const

Properties

hashCode → int

The hash code for this object.

no setter, override

key → Object

The underlying key object.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

type → Type

Gets the generic type parameter of this key.

no setter

Methods

getValue(FormMapValues values) → T?

Gets the value associated with this key from the form values map.

isInstanceOf(dynamic value) → bool

Checks if a dynamic value is an instance of this key's type.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

override

operator [](FormMapValues values) → T?

Operator overload to get the value from form values (same as getValue).