Записки программиста, обо всем и ни о чем. Но, наверное, больше профессионального.

2013-03-11

Hacking Plone

Вот, допустим, сделали вы когда-то content type в Plone. И, так уж вышло, не предусмотрели в нем поведения контейнера. А потом вдруг понадобилось добавить это поведение в этот тип.

В статье приводится хакерский (в хорошем смысле) способ обновления типа данных в Плоне

A workaround that seems working to me is to detach the object from the ZODB, switch the class and put the object back in place, like shown in here:
(pdb) obj = portal['example-1']
(pdb) del portal['example-1']
(pdb) obj
<Item at /Plone/example-1>
(pdb) from plone.dexterity.content import Container
(pdb) obj.__class__ = Container
(pdb) portal['example-1'] = obj
This is unorthodox for sure, but for the time being it proved to be a working solution without side effects.
...
The techniques described in this post are for sure interesting and powerful, but I would not rely on such low level tricks for routine operations, i.e. they are useful for doing migration or management scripts but definitely not suited for a browser view!


Статья рекомендована тем разработчикам, кто нацелен на глубинное понимание происходящего в Plone/Zope.

original post http://vasnake.blogspot.com/2013/03/hacking-plone.html

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