Is there a way in a tal:condition test to test if a given variable has been defined? For example, if my view callable has not defined a variable in the response object, can I use a tal:condition to exclude a section of the template that depends on that variable being defined?
Here's what I'm trying to do. I have a template that provides the bulk layout of each page. It's used as a macro that each individual page includes. As part of the macro, I'd like to have a section that is included only if the individual page defines a variable. tal:condition seems to require that the variable be defined and have a False value. One approach I thought of, but couldn't seem to get working was to define the variable to nothing in the macro (tal:define="variable nothing") and have the client view re-define it, but I must not understand scope or something as the client definition of the variable didn't seem to replace the tal:define value. Mark -- You received this message because you are subscribed to the Google Groups "pylons-discuss" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/pylons-discuss?hl=en.
