"Jeff K. Hoffman" wrote:
On Fri, 12 Nov 1999, Christopher Petrilli wrote:
On 11/12/99 3:57 PM, Jeff K. Hoffman at jkhoffman@carolina.rr.com wrote:
I am trying to write a new subclass of OFS.Folder (as a python product) to do the following: When a user requests /myFolder/index_html, myFolder will search itself, then its list of 'parents', returning the attribute from one of them if they have it, and raising an AttributeError if not.
Pardon my ignorance, but what exactly does this accomplish that isn't accomplished by Acquisition?
I am trying to build a site as follows:
--- / baseline/ index_html content/ paragraph_a paragraph_b images/ image_a image_b variant1/ content/ paragraph_a images/ image_b variant2/ content/ paragraph_b images/ image_a ---
Such that navigating to /baseline/index_html shows paragraph_a, paragraph_b, image_a, and image_b. I also need to be able to navigate to /baseline/variant1 and see the same index_html, this time referencing the "overloaded" paragraph_a and image_b. The same for variant2, with paragraph_b and image_a.
I have found no obvious way to do this, using acquisition, without flatting my folder hierarchy out as such:
(snip)
This is unacceptable, because there are a LOT of paragraph's and images, and I want to divide them up logically using folders.
Interesting. The organizational approach you've taken defeats acquisition. I'll have to think about this (and decide if I care :).
I am evaluating Zope in the hopes of transitioning one of our major web assets (which is currently built on top of our proprietary web development platform, which supports inheritance) to Zope and dropping development on our platform. I am finding it hard to move from an inheritance based model to a purely acquisition based model without making major sacrifices in the design of our site.
Zope supports both acquisition and inheritence. Have you looked at ZClasses? ZClasses were introduced specifically to provide inheritence. We didn't provide inheritence originally, because we thought it was beyond "content- managers", which were the target audience of Principia, the predecessor of Zope. We found, however, that alot of people were mis-using acquisition to achieve the effects of inheritence.
Am I stupid?
No. :)
Please tell me I'm missing something obvious.
I think ZClasses will give you what you want. Jim -- Jim Fulton mailto:jim@digicool.com Python Powered! Technical Director (888) 344-4332 http://www.python.org Digital Creations http://www.digicool.com http://www.zope.org Under US Code Title 47, Sec.227(b)(1)(C), Sec.227(a)(2)(B) This email address may not be added to any commercial mail list with out my permission. Violation of my privacy with advertising or SPAM will result in a suit for a MINIMUM of $500 damages/incident, $1500 for repeats.