[Zope] newbie dtml-if/expr ?

[Daniel Chudnov]

(zope-2.1.6, rh6-linux)

How come I can't do this:

  <dtml-if "var1 and var2">
   <dtml-call somefuncNeedingVar1AndVar2>
  </dtml-if>

...or other obvious (e.g. (extra) (parenthesized)) variations thereupon,
but the following seem to work:


  <dtml-if "_.has_key('var1') and _.has_key('var2')">
   ...
  </dtml-if>

...or this...

  <dtml-if "_.has_key('var1') and _.var2">   <!-- but not vice-versa -->
   ...
  </dtml-if>

...or even worse, this...

  <dtml-if var1>
   <dtml-if var2>
     ...
   </dtml-if>
  </dtml-if>


Can't seem to find the answer in the zqr or dtml reference... what am I
missing here?  Hopefully there's a simple answer. :)


  Many thanks,

  -Dan