A talk about common mistakes in Plone development. Video is available on blip.tv as well. http://ploneconference2010.blip.tv/file/4304533/

1. How not to develop with Plone
Lennart Regebro, Colliberty
Plone Conference 2010, Bristol

2. How not to develop with Plone
(A rant)
Lennart Regebro, Colliberty
Plone Conference 2010, Bristol

3. Don't do your own scaffolding!

4. Use paster

5. Paster
$ easy_install ZopeSkel
$ paster create --list-templates
$ paster create -t plone3_theme
$ paster create -t archetype
$ paster create -t basic_namespace

6. Plone buildouts beware!
● No Plone 4 support (yet)
● But plone_hosting template has some utilities:
● ZEO Server + Client
● zopepy
● logrotate
● supervisor

7. Everything else beware!
The module name must have
the correct number of dots!
ZopeSkel#basic_namespace: One dot
ZopeSkel#nested_namespace: Two dots

8. Local commands
$ paster addcontent --list-all
$ paster addcontent contenttype
$ paster addcontent portlet
$ paster addcontent view

9. Clean up!
ExampleTypeSchema['title'].storage = atapi.AnnotationStorage()
ExampleTypeSchema['description'].storage = atapi.AnnotationStorage()
...
class ExampleType(base.ATCTContent):
...
title = atapi.ATFieldProperty('title')
description = atapi.ATFieldProperty('description')

10. Don't use doctests

11. Don't use doctests
Unless you are testing documentation

12. Don't reinstall to make updates
Make upgrade steps

13. Don't host the project yourself
Use the collective svn
Upload to the Cheese Shop

14. Don't use trunk

15. Don't assume so much

16. Don't require so much

17. Don't be so monolithic

18. Don't overuse components

19. Don't fight the framework

20. Don't use content types
For things that are not content

21. Don't use ZTK
when it conflicts with The Plone Way

22. Don't use CMF
To do things you can do without it

23. zope.event
subscribers = []
def notify(event):
for subscriber in subscribers:
subscriber(event)

24. blog.star

25. blog.star
collective.blog.view
collective.blog.feeds
collective.blog.portlets
collective.blog.star

26. Photo credits
Half scaffolding - istolethetv
Toothmato paste - Scott Feldstein
Eye Tests - State Records New South Wales
Unloved Wicker Trunk – Fredo Alvarez
Thinking... Please wait - Karola Riegler
Ass Required - vhhammer
Effort - Kris Bradley
MeccanoStyrofoam – Conor Lawless
155/365 Infinite Regression (fractal) - Stuart Pilbrow
underneath a star – Jeremy Villasis

27. Thank you
Lennart Regebro
regebro@gmail.com
http://regebro.wordpress.com/