At 06:11 PM 7/28/99 -0400, Jeffrey Shell wrote:

I've found the return tag very nice for when I had situations (similar to what you described) of having heaps of logic before any content, usually on something that happens after submitting a form. If you had a DTML Document/Method like the following:

<!--#if something--> <!--#in something_else--> <!--#call "DoSomething(with=_['sequence-item']"--> <!--#else--> <!--#call "DoNothing(with="_['sequence-item']"--> <!--#/in--> <!--#var index_html--> <!--#else--> <!--#var standard_html_header--> <h1 align="center" style="color:red;">Boo!</h1> <!--#var standard_html_footer-->

It may very likely (when rendered) leave one or more blank lines at the top, which Zope will try (unsuccesfully) to parse for HTTP Headers. Now, instead of #var index_html, I can have #return index_html and (thus far) it seems to do the right thing.

Hmmm... interesting. I haven't really worked with Zope2 very much, but in 1.10.x, my solution to this problem was always to do it this way: <!--#var standard_html_header--> <!--#if something--> <!--#in something_else--> <!--#call "DoSomething(with=_['sequence-item']"--> <!--#else--> <!--#call "DoNothing(with="_['sequence-item']"--> <!--#/in--> <!--#var index_html--> <!--#else--> <h1 align="center" style="color:red;">Boo!</h1> <!--#/if--> <!--#var standard_html_footer--> This way, Zope gets the headers first and doesn't complain, the logic still runs the same, and everything comes out hunky-dory. Of course this wouldn't help if DoSomething actually needed to set an environment variable that goes in the header.... And index_html can't have any header or footer information, but I've usually been able to work around that. Nick Garcia | ngarcia@codeit.com CodeIt Computing | http://codeit.com