[Zope-CMF] Re: Custom factories?

[yuppie]

Hi Charlie!


Charlie Clark wrote:
> I've been working on some very lightweight content types that differ 
> minimally from each other so I'd like to use attributes rather than 
> different classes. I've come across a couple of problems while working 
> on this: if I put the attributes into the factory I need to make my 
> basic object into a callable because it gets called when the factory 
> gets registered.
> 
> Currently I have something like this:
> 
> class SpecialDocument:
>     def __init__(self, **kw):
>         pass
> 
>     def __call__(self, text_type=None):
>         self.text_type = text_type
> 
> HTMLDocFactory = Factory(SpecialDocument(text_type='text/html')
> PlainTextDocFactory = Factory(SpecialDocument(text_type='text/plain')
> 
> This is extended with additional registrations of the content class with 
> additional meta_types.

Do you mean you use different meta types for one class? There should not 
be a need for that. One meta type can be used for several portal types.

I attached a custom factory for plain CMF documents that sets the 
initial text format to 'html'. Maybe that code helps you.

Cheers,

	Yuppie



-----------------------------------------------------

from zope.interface import implementedBy
from zope.interface import implements
from zope.component.interfaces import IFactory
from Products.CMFDefault.Document import Document


class _HTMLDocumentFactory(object):

     """Creates an HTML document.
     """

     implements(IFactory)
     title = u'HTML document'
     description = u'An HTML document.'

     def __call__(self, *args, **kw):
         item = Document(*args, **kw)

         item.setFormat('html')

         return item

     def getInterfaces(self):
         return implementedBy(Document)

HTMLDocumentFactory = _HTMLDocumentFactory()