Re: [Zope] How to list objects across different containers in Zope's tree?

18 Jan 2001

      Thank you again James. I'll test your code.

I thought there was a simpler way to list objects across containers.
Something that could list objects within the same level (starting from
the root), as if each folder at the root was a column, and its
subfolders elements of a raw. 

Ausum

James Sintz wrote:
...
Right off the top of my head, since the sections are folder objects you
could simply dtml-in through the folders and then inbed another dtml-in.
Example (nothing fancy).
I did not include any date range stuff, but you can probably figure that out
on your own. It may be better to include a 'section' property in your zClass
and then just search your Catalog (see catalog example below for an UNTESTED
example).
<dtml-in "objectValues(['Folder'])">
  <dtml-var name_or_id><br>
  <!-- now use the folder id to move into the correct namespace -->
   <dtml-with id>
     <!-- news stories here -->
       <dtml-in "objectValues(['newItems'])">
           <dtml-var headline><br>
           <dtml-var summary><br>
       </dtml-in>
         <br>
   </dtml-with>
   <br>
</dtml-in>
Catalog example
<dtml-in "objectValues(['Folder'])">
  <dtml-var name_or_id><br>
<dtml-in "Catalog( { 'meta_type' : 'newsItem',
                                'section' :  id,
                                'goLiveDate' : [ 2000/27/12 , 2001/05/01],
                                'goLiveDate_usage' : 'range:min:max' } )">
           <dtml-var headline><br>
           <dtml-var summary><br>
  </dtml-in>
   <br>
</dtml-in>
...
-----Original Message-----
From: Ausum [SMTP:ausum@mail.cosapidata.com.pe]
Sent: Wednesday, January 17, 2001 3:18 PM
To:   James Sintz; zope@zope.org
Subject:      Re: [Zope] How to list objects across different containers
in Zope's  tree?
Thanks for the tip, James. It seems a clever approach although I must
keep it for the time being.
Anyway if that were the case, the question could be this one:
How can I list all the headlines and summaries for all the news appeared
for sports, locals and politics sections (in example) from December
27th,2000 and January 5th, 2001 ?
Greetings,
Ausum
James Sintz wrote:
...
Ausum,
It may be time to re-think your site structure. I have a news type site
as
...
well and here is how I handle it (my way... not saying it is by any
means
the best or right way).
Instead of storing your news items in a series of folderish objects,
maybe
create folders for each section and then create a news item ZClass with
the
article date or goLiveDate as the ID.
zopesite:8080/sports/2000.10.17/newsobjectid_htm
Then do some dtml to pull out the ones you want on the main
"sport/thislist_htm" page.
Better yet use ZCatalog to search for the range of news items you want
to
appear in the list.
Hope this helps!!
Jamey Sintz
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