FieldValidator<T> class abstract

A generic abstract class representing a field validator.

Subclasses should implement the call method to define custom validation logic.

Implementers

• BoundedFieldValidator
• CombinedFieldValidator
• DependentValidator
• EmailFieldValidator
• FieldMatchValidator
• RequiredValidator

Constructors

FieldValidator({String? errorMessage})

Properties

errorMessage → String?

Overrides this validator's default error message.

final

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

Methods

call(T? value) → String?

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

resolveErrorMessage(String defaultMessage) → String

Resolves the message to report for a failed validation.

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited