RequiredValidator class
A validator that ensures the value is non-null
and non-empty.
- Implemented types
- Annotations
Constructors
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toJson(
) → Map< String, dynamic> - Returns the JSON-compatible representation of this validator.
-
toString(
) → String -
Returns the string encoded JSON representation for this class. This will
remove all null values and empty collections from the returned string.
inherited
-
validate(
{required String label, required Translator translator, required String? value}) → String? -
Passes non-empty values and fails on
null
, empty, or whitespace-only values.override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Methods
-
fromDynamic(
dynamic map) → RequiredValidator -
Processes the validator object from the given
map
which must be an actual Map or a Map-like object that supports the[]
operator. Any non-null object that is not Map-like will result in an error. Anull
value will result in a return value ofnull
.