A talk about Deliverance and Diazo makes theming easier for Plone, and everybody else.

1. Deliverance and Diazo Easy Theming for Everyone (not just Plonistas) Roché Compaan • [email_address] • http://twitter.com/rochecompaan Upfront Systems • http://upfrontsystems.co.za

2. In the beginning theming Plone was hard!

3. And led to various disorders

7. Viewlet Mania

8. Layer Delirium

9. Skin-o-rexia

10. Resource Disassociation

11. Battered Buildout Syndrome

12. All disorders installable with the DSM Generic Setup Profile

13. Today, theming Plone is as easy as pie. "Easy as Pie" is a song by country singer Billy "Crash" Craddock. It was released on the 1976 album Easy as Pie. The song became a #1 hit on the country charts and was also a crossover hit. A live version was also released on 1977's Live! and 2009's Live -N- Kickin'. en.wikipedia.org/wiki/Easy_as_Pie_(song) PS: I've never listened to this song, I hope it's not too corny ...

14. Why is it easier? Embed content inside theme without touching the theme or content

17. Uses simple rules and CSS selectors to embed content from your CMS into HTML theme

18. Keeps presentation separate from content

19. Extended in Python

20. Read more at: http://packages.python.org/Deliverance/

22. Compiles simple rules to XSLT

23. Can be extended using inline XSL

24. Read more at: http://diazo.org

26. Through the web editing of files (HTML, CSS, rules.xml)

30. Need to learn XSL and XPATH for advanced use

31. Need to understand WSGI Pipeline for extension in Python

32. Case Study: Mobile frontend for Connexions (mobile.cnx.org)

34. Serves almost 2 million visitors a month

35. 18440 reasuable modules woven into 1131 collections

36. Hosts all Siyavula content covering Grade R to 12 (http://cnx.org/lenses/siyavula)

37. Powered by Plone

38. Why a mobile front end?

39. 10% Percentage of population with fixed-line internet access in South Africa

40. 84% Mobile penetration in South Africa

41. The “Kindle” of Africa

43. Very conservative subset of XHTML tags

44. Transformed tables to lists were possible

45. Convert MathML to images

46. Resize images for mobile screen size

47. Custom transform for Mxit

49. First implementation was in Diazo

51. Debugging is very painful – difficult to debug why rules don't work

52. No easy way to do more complex transforms like the conversion of MathML to images

53. Code available at: https://software.cnx.rice.edu/svn/devsets/mobile-frontend/buildout/xdv

54. Coolest Diazo feature: Inline XSL

55. Next we tried Deliverance

57. Advanced transforms possible using pure Python and pyref syntax

58. Code available at: https://software.cnx.rice.edu/svn/devsets/mobile-frontend/buildout/deliverance

60. Transform table to list in Python using lxml :

61. Demo

62. Questions?

64. http://www.flickr.com/photos/sully_aka__wstera2/1407282637

65. http://www.slideshare.net/stevevosloo/open-innov-africa-summit-sv-notes

66. http://www.slideshare.net/Jazkarta/deliverance-talk-at-plone-meetup