[Zope] Question: Passing variables several levels

[John Goerzen]

OK, Here's the story.  I have several cases in which I'd like to have
a horizontal bar.  So, I defined a DTML method at the top of the
hierarchy named Banner_Bar_Generic.  This works in isolation.  Then, I
have a DTML method named linkHome that generates a relative link
containing a sufficient number of "../" entries to take the user back
to the top of the site.  This also works in isolation, but oddly
enough, only when called as <dtml-var linkHome>, and not as <dtml-var
"linkHome">; the latter apparently has problems passing PARENTS or
REQUEST.  linkHier (not shown; also works in isolation and has an
implementation similar to linkHome) generates a strong showing where
the person is in the site; ie "Air Capital Linux Users Group:
Information: Free Software", in a Yahoo fashion.

Now, the question.  I want to put a top bar on each page, containing
these sorts of links.  So, I figure I ought to define a
Banner_Bar_Top, implemented in terms of Banner_Bar_Generic.  However,
I can't figure out how to pass along the proper strings; I always get
a Zope error.  Here's my latest attempt at this.  Also below is the
code for the other DTML methods.  Any suggestions are welcome!

*** Banner_Bar_Top:

<dtml-with REQUEST>
<dtml-with PARENTS>
<dtml-with "_.namespace(StopAt='ACLUG')">
  <dtml-var "Banner_Bar_Generic(
            ltext='<FONT FACE=' + 'helv,helvetica,arial' + '>'+
            linkHier + '</FONT>',
            rtext='<A HREF=' + linkHome + '><FONT COLOR=#FFFFFF>Home</FONT></A>',
            bgcolor='#9C0000')">
</dtml-with>
</dtml-with>
</dtml-with>


*** Banner_Bar_Generic:

<dtml-comment>
Arguments are:
  ltext -- text for left side
  rtext -- text for right side
  bgcolor -- background color
</dtml-comment>

<TABLE
 BORDER="0"
 WIDTH="100%"
 ALIGN=center
 CELLSPACING="0"
 BGCOLOR="<dtml-var bgcolor>">
<TR>
<dtml-comment>If no right text, align to center.</dtml-comment>
<dtml-if rtext>
  <TD ALIGN=left>
<dtml-else>
  <TD ALIGN=center>
</dtml-if>

<FONT COLOR="#FFFFFF"><dtml-var ltext></FONT>

<dtml-if rtext>
  <TD ALIGN=right>
  <FONT COLOR="#FFFFFF"><dtml-var rtext></FONT>
<dtml-else>
  <!-- No right text defined -->
</dtml-if>
</TABLE>

*** linkHome:


<dtml-comment><dtml-in "PARENTS">
  Item: '<dtml-var "PARENTS[_['sequence-index']].id">'<BR>
</dtml-in>
</dtml-comment>
<dtml-call "REQUEST.set('InsertStr', '../')"> 
<dtml-in "PARENTS"><dtml-if "PARENTS[_['sequence-index']].id != StopAt"><dtml-var InsertStr><dtml-else><dtml-call "REQUEST.set('InsertStr', '')"></dtml-if></dtml-in>

Thanks,
John Goerzen

-- 
John Goerzen   Linux, Unix consulting & programming   jgoerzen@complete.org |
Developer, Debian GNU/Linux (Free powerful OS upgrade)       www.debian.org |
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