SometimesRule class

Indicates that the field under validation is optional and may not be present in the input data.

If the field is present, it will be validated against other rules. If absent, other rules are skipped.

Signature: sometimes

Examples:

• sometimes

Inheritance

• Object
• Rule
• SometimesRule

Constructors

SometimesRule()

Properties

customMessage ↔ String?

The error message to be returned if validation fails. Can be overridden by the user.

getter/setter pair, inherited

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

signature → String

Returns the unique signature of the rule. Defaults to the class name in snake_case (logic handled by registry usually, but good to have).

no setter, override

Methods

message(ValidationContext context) → String

Returns the validation error message.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

passes(ValidationContext context) → FutureOr<bool>

Validates the value using the given context.

override

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited