Snips MVC revisited by Michael Fester

Michael Fester @michaelfester

:snips

MVC revisited

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Model-View-Controller (MVC)

Model-View-ViewModel (MVVM)

Tasks of the ViewModel

» Network logic » Updating models » Maintaining UI state » Formatting (numbers, strings, dates) » Responding to user input

View models are testable View models are serialisable View models are portable

HomeViewModel

HomeViewController

Loading state

Form validation

Unit testing signals

ViewController revisited

» Layout » Animation » Transition » Rotation

ViewModel

» Network logic » Updating models » Maintaining UI state » Formatting (numbers, strings, dates) » Responding to user input

Data binding in ReactiveCocoa

» Consistency » Explicit » Functional » Stateless

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