Where Did My HTML & CSS Go?! by Brigitte Jellinek

Brigitte gave Rails Girls MUC a talk on understanding where the HTML and CSS of your application can be found, and a little about working with it in RoR

Transcript

1. Where did my HTML and CSS go? Brigitte Jellinek Railsgirls Munich Nov 30th 2013!
2. You thought you knew about HTML and CSS
3. But now that you are using Rails: where did the HTML and CSS go?
4. Changes in HTML
6. The Layout (for all pages) One View (per page) Cut up HTML
7. Cut up and reassemble  /  index.html  ideas.html  /app/views  pages/info.html.erb  ideas/index.html.erb  layout/ application.html.erb I'm embedded ruby and will produce html
8. Write all Links with link_to <h1>My Static Webpage</h1>! <p>it's full off important Tags!</p>! <p>also, it has a ! <a href="ideas.html">link to my ideas</a></p>! <h1>My Rails App</h1>! <p>It's running on rails now.</p>! <p>it still has a ! <%= link_to "link to my ideas", ideas_path %></p>!
9. Links  link_to "text", "url"  link_to "all ideas", ideas_path  create all internal URLs with *_path
10. rake routes $ rake routes! Prefix Verb URI Pattern Controller#Action! root GET / pages#info! ideas GET /ideas(.:format) ideas#index! new_idea GET /ideas/new(.:format) ideas#new! edit_idea GET /ideas/:id/edit(.:format) ideas#edit! idea GET /ideas/:id(.:format) ideas#show!  see all the URLs and names of routes  just add _path or _url to the prefix:  root_path, ideas_path, new_idea_path, ...  let Rails take care of URLs for you!
11. Changes in CSS!
12. Link to CSS with stylesheet_link_tag <link rel="stylesheet" href="css/bootstrap.css">! <link rel="stylesheet" href="css/style.css">! <%= stylesheet_link_tag "application", media: "all" %>! *= require_self! *= require_tree .!
13. All my CSS files are magically assembled into one file! exceedingly clever way to enable caching
14. The Asset Pipeline: Bigger Picture
15. Use SASS .button_to, .button_to div, .button_to .btn { ! display: inline;! }! .button_to { ! &, div, .btn { ! display: inline;! }! }!
16. Use SCSS .button_to, .button_to div, .button_to.and_this_class{ ! display: inline;! }! .button_to! &, div, &.and_this_class! display: inline!
17. Summary  split up your html-files  one layout in app/views/layouts/  many views in app/views/  using ERB – embedded ruby inside <% %>  Convert all links  use link_to  never write URLs, use path-helpers instead  Move you CSS  to the asset pipline app/assets/stylesheets  Convert you CSS  to SASS, SCSS or LESS  Use all your knowledge of HTML Tags, CSS, ...  with tiny adjustments
18. Learn more! Come to Salzburg   Barcamp on Web Development March 14+15 2014   Every Oct and March   http://lanyrd.com/series/ barcamp-salzburg/   Summer University " for Women in IT: Aug25-Sep9 2014   Call for Lectures out soon!   Weekend-Courses in March + May   http://ditact.ac.at
19. Learn More! Come to Salzburg   BSc. Web Development   MSc. Web Development   Austrian Public University " of Applied Science (FH)   http://multimediatechnology.at   Web Dev User group in Salzburg   once a month   Join us on http://meetup.com
20. Brigitte Jellinek http://brigitte-jellinek.at @bjelline brigitte.jellinek@fh-salzburg.ac.at