More than you wanted to know about Service Objects Zero One × RUBYFUZA & FRIENDS

4 Things About Me Coding In The Bad Old Days Meet Service Objects Service Object Nirvana What's In It For Me? Hey Kid, Wanna Build One? Tips & Tricks Questions & Closing I. II. III. IV. V. VI. VII. VIII. 00 Todays Agenda More than you wanted to know about Service objects Zero One × RUBYFUZA & FRIENDS

01 More than you wanted to know about Service objects 4 Things About Me My Family My Dogs My Company Zero One × RUBYFUZA & FRIENDS

01 Too much Destiny More than you wanted to know about Service objects Hit me up on gee-forr on PSN. Let's raid. Zero One × RUBYFUZA & FRIENDS

A story about the bad old days More than you wanted to know about Service objects Zero One × RUBYFUZA & FRIENDS

V Logic in your views More than you wanted to know about Service objects Zero One × RUBYFUZA & FRIENDS

C What about controllers? More than you wanted to know about Service objects Zero One × RUBYFUZA & FRIENDS

M Models are the perfect place for my logic More than you wanted to know about Service objects Zero One × RUBYFUZA & FRIENDS

Mixed concerns Single use context Hard to refactor Difficult to extend Painful to test More than you wanted to know about Service objects ⇣ The downside Zero One × RUBYFUZA & FRIENDS

Developer, meet Service Object. Service Object, meet developer. More than you wanted to know about Service objects Zero One × RUBYFUZA & FRIENDS

A Service Object is a Plain old Ruby Object, that is meant to decompose business logic into manageable classes and methods. Rob Race, Hackernoon (http://bit.ly/serv-objs-1) “ ” Zero One × RUBYFUZA & FRIENDS

03 More than you wanted to know about Service objects What makes a Service Object great? 7 Preferably via single public method It Does One Thing 8 Simple Services can compose together to implement complex processes They Can Chain Together F Gives you more than a simple boolean return value Complex Return Objects Zero One × RUBYFUZA & FRIENDS

organisers 03 Let's get meta More than you wanted to know about Service objects Two types typically found in the wild: actions & Zero One × RUBYFUZA & FRIENDS

What changed for me when I started using Service Objects in my code? More than you wanted to know about Service objects Zero One × RUBYFUZA & FRIENDS

04 What Changed? More than you wanted to know about Service objects Give some input Test some output Stub friendly Tests became easier     Change friendly architecture Limited blast radius for changes Logic can be swapped out easily Logic can be dropped easily Changes to reqs are simpler      Zero One × RUBYFUZA & FRIENDS

04 What Changed? More than you wanted to know about Service objects Logic reuse Reuse across situations Reuse became a reality    Objectively simpler code Most code fits in a screen More devs can contribute Less complexity → more quality Lower overall code complexity L     Zero One × RUBYFUZA & FRIENDS

05 What can I expect if I use Service Objects? Zero One × RUBYFUZA & FRIENDS More than you wanted to know about Service objects

05 What is this? More than you wanted to know about Service objects What does it do? Zero One × RUBYFUZA & FRIENDS

05 How about now? More than you wanted to know about Service objects Zero One × RUBYFUZA & FRIENDS What does it do?

05 Great if you're DHH More than you wanted to know about Service objects Not so great for the rest of us. Zero One × RUBYFUZA & FRIENDS

05 Any clearer now? More than you wanted to know about Service objects Zero One × RUBYFUZA & FRIENDS

05 Let's take a closer look More than you wanted to know about Service objects Zero One × RUBYFUZA & FRIENDS

IssuesJWT IssuesCookie FetchExistingUserForOpenIDPayload CreateUserForOpenIDPayload More than you wanted to know about Service objects 05 Simpler feature refactoring LogUserIn Zero One × RUBYFUZA & FRIENDS

UpdateWhileYouWereGoneNotifications SendWelcomeBackEmail IssuesJWT FetchExistingUserForOpenIDPayload CreateUserForOpenIDPayload More than you wanted to know about Service objects 05 Modular logic at the process layer LogUserIn Zero One × RUBYFUZA & FRIENDS

Actions have easily stubbable or mockable inputs, and easily testable outputs Organisers take code on a journey, traversing through the whole stack. They implement a process end to end. Treat like unit tests Actions Treat like integration tests Organisers Zero One × RUBYFUZA & FRIENDS

Web Controllers Async jobs Rake tasks 05 Use outside of just web requests More than you wanted to know about Service objects Your application is more than just a series of HTTP transactions Zero One × RUBYFUZA & FRIENDS

Controllers become super boring. 0 resist the temptation to send params as primary argument Zero One × RUBYFUZA & FRIENDS

06 Let's build one More than you wanted to know about Service objects Zero One × RUBYFUZA & FRIENDS

Tip, Tricks, etc 07 More than you wanted to know about Service objects Zero One × RUBYFUZA & FRIENDS

07 Name after steps in business process. Avoid naming after implementation details. InviteFriend is better than CreateLinkedUser Actions P Naming More than you wanted to know about Service objects Name after business processes Organisers f Zero One × RUBYFUZA & FRIENDS

Not traditional. Publish/ Subscribe Framework Wisper Plenty of features, like rollbacks. Responsive developer. Light-Service Can be very powerful. D.R.Y? more like D.I.Y, amirite? Dry-rb Battle-tested. Simple. Core features supported. Has plugins. Recommended. Interactor 07 More than you wanted to know about Service objects Picking a Service Object Framework 01 02 03 04 Zero One × RUBYFUZA & FRIENDS

07 More than you wanted to know about Service objects Programatically generate action sequences Zero One × RUBYFUZA & FRIENDS

More than you wanted to know about Service objects Sidekiq Workers Service Objects W Hybrid Service Object × Async Worker Zero One × RUBYFUZA & FRIENDS

08 Thank you! More than you wanted to know about Service objects Gabriel Fortuna / [email protected] / @gee_forr Zero One / zero-one.io / @we_are_zero_one Kill some mediocrity with us - We're hiring. Zero One × RUBYFUZA & FRIENDS Seriously, let's play some Destiny, PSN: gee-forr