Rails Workshop

Slides for a Ruby on Rails workshop I gave at Georgia Tech. Script available: https://gist.github.com/1876817

Transcript

1. Ruby Rails ON Monday, February 20, 12
2. About Me Mike Skalnik github.com/skalnik @skalnik Monday, February 20, 12
3. So what is Ruby Rails ON ? Monday, February 20, 12
4. Rails is a web framework Monday, February 20, 12 A full stack framework for creating database backed web apps
5. Rails is a kitchen sink Monday, February 20, 12 Tries to include all the things you need
6. Rails is MVC* *kinda Monday, February 20, 12 Rails is actually Model2
7. Rails is not a silver bullet Monday, February 20, 12 Rails makes it easy to make a web application quickly. A fantastic starting place. *Agile*
8. Rails is opinionated Monday, February 20, 12
9. Rails is opinionated Monday, February 20, 12 * Reaching for copy & paste? DON’T! * Defaults should be good enough. Ready to go out of the `rails new` * If at all possible, simplify the problem and scope * Don’t code more than you need *right now*, you aren’t gonna need it
10. •Don’t Repeat Yourself (DRY) Rails is opinionated Monday, February 20, 12 * Reaching for copy & paste? DON’T! * Defaults should be good enough. Ready to go out of the `rails new` * If at all possible, simplify the problem and scope * Don’t code more than you need *right now*, you aren’t gonna need it
11. •Don’t Repeat Yourself (DRY) •Convention over Configuration Rails is opinionated Monday, February 20, 12 * Reaching for copy & paste? DON’T! * Defaults should be good enough. Ready to go out of the `rails new` * If at all possible, simplify the problem and scope * Don’t code more than you need *right now*, you aren’t gonna need it
12. •Don’t Repeat Yourself (DRY) •Convention over Configuration •Keep It Simple Stupid Rails is opinionated Monday, February 20, 12 * Reaching for copy & paste? DON’T! * Defaults should be good enough. Ready to go out of the `rails new` * If at all possible, simplify the problem and scope * Don’t code more than you need *right now*, you aren’t gonna need it
13. •Don’t Repeat Yourself (DRY) •Convention over Configuration •Keep It Simple Stupid •You Aren’t Gonna Need It Rails is opinionated Monday, February 20, 12 * Reaching for copy & paste? DON’T! * Defaults should be good enough. Ready to go out of the `rails new` * If at all possible, simplify the problem and scope * Don’t code more than you need *right now*, you aren’t gonna need it
14. Rails has Monday, February 20, 12 * ActiveRecord * ActionView (Part of ActionPack) * ActionController (Also ActionPack) * Beautify of Ruby allows for very expressive specific code * Encourages TDD
15. Rails has •An Object Relational Mapper Monday, February 20, 12 * ActiveRecord * ActionView (Part of ActionPack) * ActionController (Also ActionPack) * Beautify of Ruby allows for very expressive specific code * Encourages TDD
16. Rails has •An Object Relational Mapper •A Templating Engine Monday, February 20, 12 * ActiveRecord * ActionView (Part of ActionPack) * ActionController (Also ActionPack) * Beautify of Ruby allows for very expressive specific code * Encourages TDD
17. Rails has •An Object Relational Mapper •A Templating Engine •Web Application Conventions Monday, February 20, 12 * ActiveRecord * ActionView (Part of ActionPack) * ActionController (Also ActionPack) * Beautify of Ruby allows for very expressive specific code * Encourages TDD
18. Rails has •An Object Relational Mapper •A Templating Engine •Web Application Conventions •An internal Ruby DSL Monday, February 20, 12 * ActiveRecord * ActionView (Part of ActionPack) * ActionController (Also ActionPack) * Beautify of Ruby allows for very expressive specific code * Encourages TDD
19. Rails has •An Object Relational Mapper •A Templating Engine •Web Application Conventions •An internal Ruby DSL •Testing built in Monday, February 20, 12 * ActiveRecord * ActionView (Part of ActionPack) * ActionController (Also ActionPack) * Beautify of Ruby allows for very expressive specific code * Encourages TDD
20. Lets chat about MVC Monday, February 20, 12 What do you guys know about MVC? Technically Model2
21. Model “Models” the nouns in your application Responsible for behavior & data The posts, comments, and authors Monday, February 20, 12
22. View Displays information passed to it HTML, XML, or even complex JSON Templated with erb, builder, slim Monday, February 20, 12
23. Controller Controls relationship between Model & View Monday, February 20, 12
24. Controller Browser View Model Monday, February 20, 12 Browser sends request which controller sees Controller coordinates with Model Passes values to view View renders values and sends to browser Terminal time!
25. $ terminal_time Monday, February 20, 12
26. ActiveRecord “An object that wraps a row in a database table” Monday, February 20, 12 Based on Martin Fowler’s Active Record
27. Responsible 1.persistence 2.database access 3.behavior for Monday, February 20, 12
28. Usage Create create, new Read find, find_by_<attr> Update save, update_attributes Delete destroy Monday, February 20, 12 Create instantiates and saves, new only instantiates find_by_attr
29. $ terminal_time Monday, February 20, 12
30. Action Controller get and show vs. do and redirect Monday, February 20, 12
31. Usage Pass to view as @var redirect_to render Monday, February 20, 12 redirect_to sends a 301 and redirects to different action render just renders that actions view
32. $ terminal_time Monday, February 20, 12
33. View Has access to @variables We’ll just stick to ERB Monday, February 20, 12
34. ERB <% %> Evaluate <%= %> Evaluate & Print <%- %> Evaluate & Eat Whitespace Monday, February 20, 12
35. $ terminal_time Monday, February 20, 12
36. So what do you think? Monday, February 20, 12
37. @ Web Tech Innovators Monday, February 20, 12
38. ATLRUG Monday, February 20, 12