EasyValidator.required constructor
const
EasyValidator.required([
- String? errorMessage
A factory constructor for creating a required validator.
The errorMessage
parameter is the error message to be displayed when the value is not provided.
If no errorMessage
is provided, the default error message will be used.
The default error message is 'This field is required'.
Example usage:
final validator = EasyValidator.required('Username is required');
String? result = validator.validate("");
print(result); // 'Username is required'
Implementation
const factory EasyValidator.required([String? errorMessage]) =
RequiredValidator;