[Zope] DTML Container?

[Tres Seaver]

Alexandre Ratti wrote:
> 
> Hello,
> 
> I think you can also render the body with: <dtml-var "_.render(this())">.
> 
> I know this looks kludgy, but it worked for me and you don't need to handle
> an external method. I included below a mail I sent when I came across this
> solution.
> 
> Cheers.
> 
> Alexandre
> 
> At 12:00 08/02/2000 -0800, you wrote:
> >Look at Kevin Dangoor's KM|NetNews Product for a nice take on this.  The
> >outline
> >of the solution is to define a method 'index_html' within your ZClass (not
> >inside each instance!).  This method "stitches together" the properties of the
> >object to present its "default view".
> >
> >The key problem is to get the "body" property to be rendered using the DTML
> >engine, but filled out using the properties of the main object.  Here is a
> >Python ExternalMethod (add it to the ZClass) which does the trick::
> >
> >   from DocumentTemplate import HTML
> >
> >   def render_dtml( self, string_property ):
> >       """
> >       """
> >       return HTML( string_property, self.__dict__ )()
> >
> >You can then use this within the ZClass' instance_html as:
> >
> >   <dtml-var "render_dtml( body )">
> 
> [Archive email dated December 1999]
> 
> >I eventually found a solution for the problem described below.
> >
> >Summary: I have a ZClass that subclasses DTMLDocument. In the ZClass
> >product folder, I have an index_html method that provides a default view
> >for ZClass instances. I want this method to display both property values
> >and the text content of the ZClass instance.
> >
> >To display the text content, if I use <dtml-var raw>, the text is
> >displayed in unrendered form. Text and HTML code are OK but nested DTML is
> >not interpreted. To display the text content in rendered form, I need to
> >use <dtml-var "_.render(this())">.
> >
> >Example code for index_html:
> >
> ><dtml-var standard_html_header>
> >  <H2 align="center"><dtml-var title_or_id></H2>
> >
> ><P><EM><dtml-var myDateProperty></EM><BR>
> ><dtml-var myDescriptionProperty></P>
> >
> >  <dtml-var "_.render(this())">
> ><dtml-var standard_html_footer>



Hmm, I guess I was trying to solve a slightly different problem, which was to
render individual
*properties* of an object using DTML:  '_.render(this())' works to render the
whole DTML Method or Document (actually, to render the "document source" of the
object).  Suppose in your example that myDescriptionProperty contained DTML --
the external method would allow you to render that DTML using the ZClass
instance's namespace.

-- 
=========================================================
Tres Seaver         tseaver@palladion.com    713-523-6582
Palladion Software  http://www.palladion.com