December 2009

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I’ve spent some time this weekend updating the Plone Help Center product to work in Plone 4, specifically in Plone 4.0a2. Some reasons/excuses:

  • I had free time.
  • I love coding for fun.
  • I wanted to experience myself how easy/hard can be to updating a Plone 3 product to work in Plone 4.

The changelog will tell you about every change I performed, but a summary of the most important stuff is:

  • The attribute __implements__ of a class cannot be used anymore. Use zope.interface implements and implementsOnly instead.
  • Use mailhost.send instead of mailhost.secureSend. Learn how to upgrade your product accordingly (thanks alecm!).
  • Manually define all needed variables which were formerly globally defined in the famous main_template. This was the most time-consuming step, because I had to fix them one-by-one following a try-error approach. Thanks god PHC has automatic tests, which helped a lot there.
    Perhaps we could come up with a handy find-grep expression to be run in the root of your add-on package to identify all templates where you’re using global expressions (no longer available). find-grep hackers are welcome to comment this post. ;)

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I’ve prepared some slides for tomorrow’s presentation about the Higgs boson for the Experimental Particle Physics course. They probably are very imprecise and lack formality, but that’s all I managed to do!

I’ve borrowed a lot of material and knowledge from Wikipedia and the webpages of the different experiments mentioned, so keep this in mind if you want to borrow anything from my slides. :)

You can get them in PDF format and in ODP format.

Very special thanks to Beatriz Seoane Bartolomé, who helped me to understand the hypothesis contrast diagrams.

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Now one can generate graphs like this one. :)

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