LogValidator<T> class

LogValidator extends TranslatedValidator to log the value being validated. This validator is primarily used for debugging purposes and always returns null, indicating no validation errors.

Parameters:

log A custom logging function to log the value. If not provided, the value or error text will be logged using debugPrint.
errorText The error message that can be used for logging if the value is null.
checkNullOrEmpty Whether to check if the value is null or empty. This is set to false by default.

Inheritance

Constructors

LogValidator.new({String log(T? value)?, String? errorText}): Constructor for the log validator.
const

Properties

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
log → String Function(T? value)?: A custom logging function to log the value.
final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
translatedErrorText → String: The translated error message returned if the value is invalid.
no setteroverride

Methods

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

Operators

operator ==(Object other) → bool: The equality operator.
inherited