TinyValidation

A fluent and elegant validation framework for Swift.

Requirements

• iOS 8.0+
• Xcode 10.0+
• Swift 4.0+

Installation

You can install TinyValidation using CocoaPods or Carthage.

CocoaPods

use_frameworks!

pod 'TinyValidation'

Carthage

github 'royhsu/TinyValidation'

How to Use

Please make sure to import the framework.

import TinyValidation

Built-in Validation Rules

You can use the built-in rules for trivial validations.

Example: Validate an email.

let validEmail = try "hello@example.com".validated(by: EmailRule.standard)

Currently supported rules.

• Email

Custom Validation Rules

Create your custom rules by conforming to ValidationRule protocol.

Example: Validate a password.

// Custom password rules.
enum PasswordRule: ValidationRule {

    case minimumLength(Int)

    case maximumLength(Int)

    @discardableResult
    func validate(_ value: String) throws -> String {

        switch self {

        case let .minimumLength(length):

            if value.count < length { throw PasswordError.minimumLength(length) }

            return value

        case let .maximumLength(length):

            if value.count > length { throw PasswordError.maximumLength(length) }

            return value

        }

    }

}

Then you can validate multiple rules at once.

let passwordRules: [PasswordRule] = [
    .minimumLength(8),
    .maximumLength(10)
]

let validPassword = try "12345678".validated(by: passwordRules)

Reference

• Validator