For More Features OUT-OF-THE-BOX (localization) see
Official Documentation site
if you need
- simple true of false function to validate a input
- validate a normal flutter Form field
@override
Widget build(BuildContext context) {
return TextFormField(
// use qValidator function and provider list of rules to apply on this field
validator: qValidator([
IsRequired(),
IsOptional()
IsEmail(),
MinLength(8),
MaxLength(30, "optionally you can override the failure if the validation fails"),
]),
);
}
if you need to show a custom error message you can
- use the rule constructor (scooped for a single rule)
- use
ValidatorsLocalization.on
(scooped for the entire Type rules)
void main() {
ValidatorsLocalization.on<IsRequired>((rule) => 'the new required message');
}
- if you use queen all the rules are localized out of the box 🎁 !