CustomValidator<I> class

Custom validator. Allows to define validation with CustomValidator.isValid callback.

Can be defined or with field name and error message within default constructor or with CustomValidator.message callback to generate error message during the validation

Implemented types

• Validator<I>

Constructors

CustomValidator({required _MessageBuilder<I> message, required _Validator<I> isValid, String? fieldName, bool ignoreNullable = true})

CustomValidator.withMessage({required _MessageBuilder<I> message, required _Validator<I> isValid, bool ignoreNullable = true})

const

Properties

hashCode → int

The hash code for this object.

no setter, inherited

ignoreNullable → bool

If validation can be invoked on null values.

final

isValid → _Validator<I>

Validation method

final

message → _MessageBuilder<I>

Validation message callback

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

call(I? value) → String?

Invoke validation

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited