Flutter Field Validator

A powerful Flutter validation package with built-in validators, localization support, and input formatters.

Features

✅ Global Validators

Email
Mobile Number
Password
URL
Credit Card
CVV
Expiry Date

✅ India Validators

PAN
Aadhaar
GST
IFSC
UPI
PIN Code
Passport
Voter ID
Vehicle Number
Driving License
Bank Account

✅ USA Validators

SSN
ZIP Code
EIN
Phone Number

✅ UK Validators

Postcode
NINO
UTR
Phone Number

✅ Input Formatters

Numbers Only
Alphabets Only
Alphanumeric
No Spaces
No Special Characters
Email
Website
PAN Formatter
Aadhaar Formatter
GST Formatter
IFSC Formatter
UPI Formatter
Length Limit Formatters

✅ Localization

English
Hindi

Installation

Add dependency:

dependencies:
  form_validator_flutter: ^1.0.0

Run:

flutter pub get

Import

import 'package:form_validator_flutter/form_validator_flutter.dart';

Usage

Email Validation

TextFormField(
  validator: Validators.email,
)

Mobile Validation

TextFormField(
  validator: Validators.mobile,
)

PAN Validation

TextFormField(
  validator: IndianValidators.pan,
)

Aadhaar Validation

TextFormField(
  validator: IndianValidators.aadhaar,
)

SSN Validation

TextFormField(
  validator: USValidators.ssn,
)

UK Postcode Validation

TextFormField(
  validator: UKValidators.postcode,
)

Input Formatters

PAN Formatter

TextFormField(
  inputFormatters:
      ValidatorInputFormatters.panFormatters,
)

Mobile Formatter

TextFormField(
  inputFormatters:
      ValidatorInputFormatters.mobileFormatters,
)

Aadhaar Formatter

TextFormField(
  inputFormatters:
      ValidatorInputFormatters.aadhaarFormatters,
)

Localization

Switch language dynamically:

ValidatorLocale.current =
    ValidationLocale.hindi;

Back to English:

ValidatorLocale.current =
    ValidationLocale.english;

Example

See the example application included with the package.

Contributing

Contributions, issues and feature requests are welcome.

License

MIT License.