On 12/4/05, J Cameron Cooper <[EMAIL PROTECTED]> wrote: > Christopher Rivard wrote: > > Hello, > > > > I'm am trying to check for the membership of items in a list and think > > I'm missing something. > > How is this done in dtml? > > > > List allids: [15,16,17,18] > > > > Check for multiple items in the list: > > > > <dtml-in allids prefix="loop"> > > <dtml-if expr="loop_item == 17"> > > something > > <dtml-elif expr="loop_item == 17 and loop_item != 18"> > > doesn't work > > </dtml-if> > > </dtml-in> > > > > The goal is to check for combinations: > > 17 and not 18 > > 18 only > > 17 only > > 17 and 15 > > 18 and 16 > > ...combinations. > > > > I don't think that I really want to loop through the list, just want to > > check membership in the list. > > In Python, you can simply ask:: > > 17 in allids > > 18 not in allids > > and so forth as boolean expressions. > He can do this in DTML too. <dtml-if "17 in allids"> you're here! </dtml-if>
> Just make sure that the elements of the list you're getting are what you > think they are. If you ask about the integer 17 and the list actually > has a string "17" they won't match. You can either adjust what you test > or use something like the 'int' function to "cast". > > --jcc > -- > Building Websites with Plone > http://plonebook.packtpub.com/ > _______________________________________________ > Zope maillist - Zope@zope.org > http://mail.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://mail.zope.org/mailman/listinfo/zope-announce > http://mail.zope.org/mailman/listinfo/zope-dev ) > -- Peter Bengtsson, work www.fry-it.com home www.peterbe.com hobby www.issuetrackerproduct.com _______________________________________________ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )