Validator<T> class
abstract
Validator is an abstract class that will allow you to create whatever
validation you need, always returning the same ValidatorResult object.
T stands for the type used to identify the fields such as a custom
object or a string.
- Implementers
Constructors
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
result(
{required bool isValid, required String? errorMessage}) → Future< ValidatorResult> - Returns a validation result as a Future to avoid verbosity
-
toString(
) → String -
A string representation of this object.
inherited
-
validate(
T value) → Future< ValidatorResult> - Called by the FormBuilder to on each field.
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited