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On 01/30/2011 01:21 PM, Mike Orr wrote:
> On Sun, Jan 30, 2011 at 8:25 AM, Wade Leftwich wrote:
>> Actually a bit more in keeping with the spirit of Traversal, and again
>> keeping your calls to Mongo to a mininum, would be something like
>> this:
>>
>> /blog/month/2011/01/29/my-post-about-pyramid would do this:
>>
>> archive = Blog['archive']
>> year = archive['2011'] = archive.__getitem__('2011') = Year(y=2011)
>> month = year['01'] = year.__getitem__('01') = Month(y=2011, m=1)
>> day = month['29'] = month.__getitem__('01') = Day(y=2011, m=1, d=29)
>> post = day['my-post-about-pyramid'] = day.__getitem__('my-post-about-
>> pyramid') = Post(y=2011, m=1, d=29, slug='my-post-about-pyramid')
>> ... and the default view for Post would be to query Mongo
>>
>> This would handle shorter paths in a natural way -- e.g. '/blog/month/
>> 2011/01' would map to the default view for Month(y=2011, m=1), which
>> would call Post.list_posts_for_month() .
>
> Are you traversing each level of the date here, or using a subpath from
> archive?
>
> It seems like extra overhead to create a temporary Year class and
> Month class just to traverse through them. What are you gaining?
One advantage: this strategy allows registering views against those
transient classes, which means that in the "reusable app" scenario the
re-using app can override those views selectively.
Another advantage: the logic is in the code, not in per-deployment
configuration, which makes it unit-testable.
> I'm thinking of making a CMS site with articles embedding nested
> comments. Chris suggested making the article a repoze.folder.Folder
> subclass. I said it seems funny to think of an artlcle as a folder. He
> said he makes almost everything folders nowadays, as it makes it
> easier to both use the object and traverse through it. Could
> ArchiveYear and ArchiveMonth be made into Folder subclasses to factor
> away some of the code?
That would makes sense if you actually want to *store* the entries
inside the archive/year/month tree (a perfectly reasonable strategy).
Making the *entry* a folder would make sense if you wanted to store
other items (images, audio / video clips, tarballs, PDFs) inside it.
Tres.
- --
===================================================================
Tres Seaver +1 540-429-0999 tsea...@palladion.com
Palladion Software "Excellence by Design" http://palladion.com
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