Number

The Number schema is used to validate the input value as a number. This schema contains some useful built-in validators to validate the input value.

The following code shows how to create a Number schema:

Using Validasi

Validasi.number();

Using Direct Class

NumberValidator();

INFO

The Number schema is based on num. Which could represent both int and double values.

Below are the available methods for the Number schema:

• nonDecimal
• decimal
• positive
• negative
• nonPositive
• nonNegative
• gt
• gte
• lt
• lte
• finite

nonDecimal

Validasi.number().nonDecimal({String? message});

The nonDecimal method is used to validate that the input value is a non-decimal number. This method will return an error message if the input value is a decimal number.

import 'package:validasi/validasi.dart';

void main() {
    final schema = Validasi.number().nonDecimal();

    final result = schema.tryParse(3.14);

    print(result.errors.first.message); // 'field must be non-decimal number'
}

decimal

Validasi.number().decimal({String? message});

The decimal method is used to validate that the input value is a decimal number. This method will return an error message if the input value is not a decimal number.

import 'package:validasi/validasi.dart';

void main() {
    final schema = Validasi.number().decimal();

    final result = schema.tryParse(3);

    print(result.errors.first.message); // 'field must be decimal number'
}

positive

Validasi.number().positive({String? message});

The positive method is used to validate that the input value is a positive number. This method will return an error message if the input value is not a positive number.

import 'package:validasi/validasi.dart';

void main() {
    final schema = Validasi.number().positive();

    final result = schema.tryParse(-1);

    print(result.errors.first.message); // 'field must be positive number'
}

negative

Validasi.number().negative({String? message});

The negative method is used to validate that the input value is a negative number. This method will return an error message if the input value is not a negative number.

import 'package:validasi/validasi.dart';

void main() {
    final schema = Validasi.number().negative();

    final result = schema.tryParse(1);

    print(result.errors.first.message); // 'field must be negative number'
}

nonPositive

Validasi.number().nonPositive({String? message});

The nonPositive method is used to validate that the input value is a non-positive number. This method will return an error message if the input value is a positive number.

import 'package:validasi/validasi.dart';

void main() {
    final schema = Validasi.number().nonPositive();

    final result = schema.tryParse(1);

    print(result.errors.first.message); // 'field must be non-positive number'
}

nonNegative

Validasi.number().nonNegative({String? message});

The nonNegative method is used to validate that the input value is a non-negative number. This method will return an error message if the input value is a negative number.

import 'package:validasi/validasi.dart';

void main() {
    final schema = Validasi.number().nonNegative();

    final result = schema.tryParse(-1);

    print(result.errors.first.message); // 'field must be non-negative number'
}

gt

Validasi.number().gt(num min, {String? message});

The gt method is used to validate that the input value is greater than the specified minimum value. This method will return an error message if the input value is not greater than the specified minimum value.

import 'package:validasi/validasi.dart';

void main() {
    final schema = Validasi.number().gt(5);

    final result = schema.tryParse(3);

    print(result.errors.first.message); // 'field must be greater than 5'
}

gte

Validasi.number().gte(num min, {String? message});

The gte method is used to validate that the input value is greater than or equal to the specified minimum value. This method will return an error message if the input value is not greater than or equal to the specified minimum value.

import 'package:validasi/validasi.dart';

void main() {
    final schema = Validasi.number().gte(5);

    final result = schema.tryParse(3);

    print(result.errors.first.message); // 'field must be greater than or equal to 5'
}

lt

Validasi.number().lt(num max, {String? message});

The lt method is used to validate that the input value is less than the specified maximum value. This method will return an error message if the input value is not less than the specified maximum value.

import 'package:validasi/validasi.dart';

void main() {
    final schema = Validasi.number().lt(5);

    final result = schema.tryParse(7);

    print(result.errors.first.message); // 'field must be less than 5'
}

lte

Validasi.number().lte(num max, {String? message});

The lte method is used to validate that the input value is less than or equal to the specified maximum value. This method will return an error message if the input value is not less than or equal to the specified maximum value.

import 'package:validasi/validasi.dart';

void main() {
    final schema = Validasi.number().lte(5);

    final result = schema.tryParse(7);

    print(result.errors.first.message); // 'field must be less than or equal to 5'
}

finite

Validasi.number().finite({String? message});

The finite method is used to validate that the input value is a finite number. This method will return an error message if the input value is not a finite number.

import 'package:validasi/validasi.dart';

void main() {
    final schema = Validasi.number().finite();

    final result = schema.tryParse(double.infinity);

    print(result.errors.first.message); // 'field must be finite number'
}