EasyValidator.contains constructor
A factory constructor for creating a ContainsValidator.
The contains
parameter specifies the string that the value being validated should contain.
The errorMessage
parameter is an optional error message to be displayed if the validation fails.
Example usage:
final validator = EasyValidator.contains('Hello','Value must contain Hello');
String? result = validator.validate("test");
print(result); // 'Value must contain Hello'
Implementation
const factory EasyValidator.contains(
String contains, {
bool caseSensitive,
String? errorMessage,
}) = ContainsValidator;