[Zope] dynamically generated TAL

9 Mar 2003

      * Dieter Maurer <dieter@handshake.de> [2003-03-05 20:37:48 +0100]:
...
N. Thomas wrote at 2003-3-4 23:18 -0500:
...
* Dieter Maurer <dieter@handshake.de> [2003-03-03 20:56:46 +0100]:
...
N. Thomas wrote at 2003-3-1 23:46 -0500:
...
We have a script that generates TAL. The problem is that the content
is not being interpeted as TAL by Zope, but rather as raw HTML.
You must make a Page Template object from your TAL source code, wrap
it in an appropriate context (--> "__of__") and return it (or call it
to let it render).
Well, this was a start in the right direction. But after wading
through the archives, the nearest solution I can cruft together is
an external method like this:
Because, you did not do the "__of__" magic...
Well, after banging my head on this for a few days, I was finally able
to get this to work. Here is the correct code to do this:

    from Products.PageTemplates.ZopePageTemplate import ZopePageTemplate

    def talgen(self):

        zptstr = \
    """
    <html>
    <title>This is a dynamically generated ZPT page.</title>
    <body>
    This sentence <b tal:omit-tag="">should contain no tags.</b>
    </body>
    </html>
    """ 

        z = ZopePageTemplate(id=None, text=zptstr, content_type="text/html")
        return z.__of__(self)()

The problem earlier was that I was not defining the method with self so
that it would be bound to the context, hence any references later on to
self threw an error.
...
I trust you that you will write a HowTo about dynamic generation of
TAL code, once you solved your problem ;-)
Yup, doing that now. It should be up on zope.org in the New User How-to
section soon.

Much thanks to Dieter Maurer, and hazmat (Kapil Thangavelu) on #zope
(IRC freenode) for helping me out with this.

thomas

-- 
N. Thomas
nthomas@cise.ufl.edu
Etiamsi occiderit me, in ipso sperabo