Draper Gem

A quick presentation at Montrealrb.com on how to use Draper gem to decorate views in a Ruby on Rails application.

Transcript

1. Draper Let's bring a decorator in the house
2. @hugofrappier hugo@cekoya.com 514.228.3796
3. Commodore 64
4. Macintosh 512
5. what is Draper?
6. object-oriented layer for presentation logic
7. # app/decorators/article_decorator.rb! class ArticleDecorator < Draper::Decorator! delegate_all! ! def publication_status! if published?! "Published at #{published_at}"! else! "Unpublished"! end! end! ! def published_at! object.published_at.strftime("%A, %B %e")! end! end!
8. when to use Draper?
9. formatting of complex data
 for user display
10. views controller notices mailers
11. why Draper?
12. views on a diet
13. easier to test than helpers
14. step 1 install gem
15. step 2 generate decorator for a model
16. step 3 decorate an object
17. step 4 use decorator in views, controllers, mailers
18. let's refactor BOOKIEWOOGIE https://github.com/frahugo/bookiewoogie