FormzInputErrorCacheMixin<T, E> mixin

Mixin for FormzInput that caches the error result of the validator. Use this mixin when implementations that make expensive computations are used, such as those involving regular expressions.

Superclass Constraints


error → E?
Returns a validation error if the FormzInput is invalid. Returns null if the FormzInput is valid.
no setteroverride
isValid bool
Whether the FormzInput value is valid according to the overridden validator.
no setteroverride
value → T
The value of the given FormzInput. For example, if you have a FormzInput for FirstName, the value could be 'Joe'.
isPure bool
If the FormzInput is pure (has been touched/modified). Typically when the FormzInput is initially created, it is created using the FormzInput.pure constructor to signify that the user has not modified it.
isNotValid bool
Whether the FormzInput value is not valid. A value is invalid when the overridden validator returns an error (non-null value).
no setterinherited
displayError → E?
The error to display if the FormzInput value is not valid and has been modified.
no setterinherited
hashCode int
The hash code for this object.
no setterinherited
runtimeType Type
A representation of the runtime type of the object.
no setterinherited


noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
toString() String
A string representation of this object.
validator(T value) → E?
A function that must return a validation error if the provided value is invalid and null otherwise.


operator ==(Object other) bool
The equality operator.