[Zope-CMF] I can't live without DTML in Portal Document

Wed, 10 Oct 2001 08:23:02 -0400

Florent Guillaume wrote:

 >Loren Stafford wrote:
 >>Not a great subject line, but I'm having trouble expressing the real problem
 >>in a few words. So here are a lot of words:
 >>
 >>On my Intranet site, I've got a Portal Folder
 >>
 >>   http://morphicsweb//Portal/Members/lstaffor/Papers/2001_09_01/,
 >>
 >>and in that folder a Document (Format HTML) called 'index_html' and a Portal
 >>Image 'Fig_1.gif'. In 'index_html' I reference the image with <img
 >>src="../Fig_1.gif">. When I click the View action the document is requested
 >>with the URL
 >>
 >>
 >>http://morphicsweb/Portal/Members/lstaffor/Papers/2001_09_01/index_html/docu
 >>ment_view
 >>
 >>and the browser expands the 'img' reference to
 >>
 >>  http://morphicsweb/Portal/Members/lstaffor/Papers/2001_09_01/Fig_1.gif
 >>
 >>and all is well.
 >>
 >>However, if I find the document by a Topic search, the document is requested
 >>with the URL
 >>
 >>  http://morphicsweb/Portal/Members/lstaffor/Papers/2001_09_01/index_html
 >>
 >>and the browser expands the 'img' reference to
 >>
 >>  http://morphicsweb/Portal/Members/lstaffor/Papers/Fig_1.gif
 >>
 >>which is invalid, since Fig_1.gif is not in that folder.
 >>
 >>I've made a temporary fix by coding the absolute URL of the image in the img
 >>tag, but, until now, I haven't had to code absolute URLs since I started
 >>using Zope. I usually generate them with DTML, but I can't use DTML in a
 >>Portal Document. I could play a trick with acquisition, moving the image up
 >>one level (or the index_html Document down one level); but that would still
 >>be a trick.
 >>

>>What is the right solution to this problem? What is the real problem?
>>
> 
> I believe that Document (and other contents in general) should insert a
> <base> tag in the <head> in some situations, but I've not yet completely
> figured out the mechanism used (it's fairly intricate and not very well
> documented -- see HTTPResponse::insertBase, and the call to
> response.setBase in BaseRequest::traverse ...).
> 
> Your best bet in the meantime, as you mentionned, would be acquisition,
> which is not that much of a hack (except that it can lead to
> caching-unfriendly behaviour).

Note that the default skiins for content objects already set

the BASE tag, for just this reason.  Here is 'document_view'::

  <dtml-let relative_to_content="1">
  <dtml-var standard_html_header>
  </dtml-let>
  <div class="Desktop">
   <div class="Document">
    <dtml-var content_byline>
    <dtml-var CookedBody>

    <div class="Discussion">
     <dtml-var viewThreadsAtBottom>
    </div>

   </div>
  </div>

  <dtml-var standard_html_footer>

That 'relative_to_content' flag causes 'standard_html_header' to

insert a base tag with the current object's 'absolute_url'.  I think
this is still broken in CMFDecor, however.

Tres.
-- 
===============================================================
Tres Seaver                                tseaver@zope.com
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