• What is CombineValidate?
• Examples
• Basic usage
• CombineValidateExtended library
• Requirements
• Installation
• Documentation

Useful satellite for validation user inputs proposes for any SwiftUI architectures. (MVVM as basic reference)

• SwiftUI native
• Combine under the hood
• Fully customizable
• Validate simple fields for non empty values
• Validate fields by predefined or your own regular expressions
• Try input by multiple regex expressions and emerge up the result what is the regex got fired
• Pass your own error messages
• Localize error messages with custom localization table names
• Use the wide validation extension library
• Extend the set of validation possibilities as you want

Firstly you should define the validation publisher within your @Published property

class FormViewModel: ObservableObject {
    
    @Published var email = ""
    public lazy var emailValidator: ValidationPublisher = {
        $email.validateWithRegex(
            regex: RegularPattern.email,
            error: "Not email",
            tableName: nil
        )
    }()
}

Excellent! And then, call the validate view modifier from your SwiftUI Input

TextField("Should email", text: $viewModel.email)
        .validate(for: viewModel.emailValidator)

Enjoy!

Same steps you can apply to SecureField and Toggle.

Useful set of validation publishers and regular expressions library. Validation for

• any kind of credit card numbers
• urls
• hash tags
• numbers
• passwords
• much more

The CombineValidate dependes on the Combine reactive framework. Minimal requirements:

• iOS 13
• MacOS Catalina

Package installation occurs via SPM. Add package in your Xcode as dependency

• Find in File menu "Add packages"
• Use the repo link https://github.com/pridees/combine-validate and follow for installation steps
• Add the CombineValidate dependency to your project targets

Look at here and explore documentation.