MaxValidator<T> class
MaxValidator extends TranslatedValidator to validate if a value is less than or equal to a specified maximum value.
This validator checks if the value is a number or a string that can be parsed into a number and ensures it does not exceed the specified maximum value.
Parameters:
- max The maximum allowable value.
- inclusive Whether the maximum value is inclusive. Defaults to true.
- errorText The error message returned if the validation fails.
- checkNullOrEmpty Whether to check if the value is null or empty.
- Inheritance
-
- Object
- BaseValidator<
T> - TranslatedValidator<
T> - MaxValidator
Constructors
- MaxValidator.new(num max, {bool inclusive = true, String? errorText, bool checkNullOrEmpty = true})
-
Constructor for the maximum value 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
- inclusive → bool
-
Whether the maximum value is inclusive.
final
- max → num
-
The maximum allowable 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, otherwisefalse
. 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 isnull
.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.
inherited
-
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