[cmfsyllabus] Re: [Plone-users] Course booking system

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On April 23, 2004 12:39 am, you wrote:
> Hi Dmitry
>
> Thanks for getting hold of me.  Can you tell me a bit more about
> yourself and how you would/could envison yourself working on a project
> to build the sort of functionality I spoke about in my message?

Hi, I'm CC'ing CMFSyllabus mailing list as here I've put together some info on 
my vision how add-ons for CMFSyllabus should be developed.

CMFSyllabus is an AT-based project thus easily extendible. Some of the 
features you describe can go into "core" features, some can go as add-on 
product. Probably the best approach would be to generate new product with 
classes subclassing CMFSyllabus's classes, something like:

from Products.CMFSyllabus import Course

class Course(Course.Course):
      schema=Course.Course.schema + ....
....

which would give you all the functionality of CMFSyllabus plus all the fields 
you need for your custom stuff. 
One thing I'm worried about is that inter-class dependencies are hardcoded and 
I didn't play enough with approach described above. But my educated guess 
would be that it should work as long as meta_type for your derived classes is 
the same as I use inside CMFSyllabus and as long as you don't install 
original CMFSyllabus in the same Plone instance as your modified one 
everything should be fine (note that having both products CMFSyllabus and 
your modified MySyllabus in Zope Products directory is fine - it's Plone who 
might not like having both products installed with the same meta_types).

Hope my rumble was clear enough to understand :)

- -- 
Dmitry Makovey
Web Systems Administrator
Athabasca University
(780) 675-6245
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