example.dart

final EzSchema userProfileSchema = EzSchema.shape({
  "firstName": EzValidator<String>().required(),
  "lastName": EzValidator<String>().required(),
  "email": EzValidator<String>().required().email(),
  "age": EzValidator<int>().min(18).max(100),
  'contactDetails': EzSchema.shape({
    'mobile': EzValidator<String>()
        .required()
        .matches(RegExp(r'^\+\d{10,15}$'), 'Invalid phone number'),
    'landline': EzValidator<String?>(optional: true),
  }),
  'address': EzSchema.shape({
    'street': EzValidator<String>().required(),
    'city': EzValidator<String>().required(),
    'state': EzValidator<String>().required(),
    'zipCode': EzValidator<num>().required(),
    'country': EzSchema.shape({
      'name': EzValidator<String>(defaultValue: 'TUNISIA').required(),
      'code': EzValidator<String>().required(),
      'continent': EzSchema.shape({
        'name': EzValidator<String>().required(),
        'code': EzValidator<String>().required(),
      })
    }),
  }),
  'employment': EzSchema.shape({
    'current': EzValidator<String?>(optional: true),
    'previous': EzSchema.shape({
      'companyName': EzValidator<String>().required(),
      'position': EzValidator<String>().required(),
      'years': EzValidator<int>().min(1).max(50),
    }),
  }),
});

// -----------------

  final (data, errors) = userProfileSchema.validateSync({
      'firstName': 'John',
      'lastName': 'Doe',
      'email': 'john.doe@example.com',
      'age': 30,
      'contactDetails': {
        'mobile': '+12345678901',
      },
      'address': {
        'street': '123 Main St',
        'city': 'Anytown',
        'state': 'Anystate',
        'zipCode': 12345,
        'country': { }, // I will not define the country
      },
      'employment': {
        'current': 'Current Company',
        'previous': {
          'companyName': 'Previous Company',
          'position': 'Previous Position',
          'years': 5,
        },
      },
    });

  print(data);

// Result of displayed data will contain country with default values
// {
//   firstName: John,
//   lastName: Doe,
//   email: john.doe@example.com,
//   age: 30,
//   contactDetails: { mobile: +12345678901, landline: null },
//   address:
//     {
//       street: 123 Main St,
//       city: Anytown,
//       state: Anystate,
//       zipCode: 12345,
//       country:
//         { name: TUNISIA, code: null, continent: { name: null, code: null } },
//     },
//   employment:
//     {
//       current: Current Company,
//       previous:
//         {
//           companyName: Previous Company,
//           position: Previous Position,
//           years: 5,
//         },
//     },
// }
//

print(errors)

// {address: {country: {code: The field is required, continent: {name: The field is required, code: The field is required}}}}