AggregateValidator<T> class

AggregateValidator extends BaseValidator to validate a value using a list of multiple validators.

Parameters:

validators The list of validators to apply to the value.
checkNullOrEmpty Whether to check if the value is null or empty. This is set to false by default.

Inheritance

AggregateValidator.new(List<FormFieldValidator<T>> validators): Constructor for the aggregate validator.
const

checkNullOrEmpty → bool: Whether to check if the value is null or empty.
finalinherited
errorText → String?: The error message returned if the value is invalid.
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
validators → List<FormFieldValidator<T>>: The list of validators to apply to the value.
final

isNullOrEmpty(T? valueCandidate) → bool: Checks if the value is null or empty. Returns true if the value is null or empty, otherwise false. The value is considered empty if it is a String, Iterable, or Map and it is empty or contains only whitespace characters. If the value is not a String, Iterable, or Map, it is considered empty if it is null.
inherited
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toString() → String: A string representation of this object.
inherited
validate(T? valueCandidate) → String?: Validates the value and checks if it is null or empty.
override
validateValue(T? valueCandidate) → String?: Validates the value. Returns null if the value is valid, otherwise an error message. Call validate() instead of this method when using the validator.
override