Re: [Zope] Error Value: sequence-var-get_size

Zoper writes:

... <dtml-var sequence-var-get_size> bytes</td> <td> ...

but whenever I try to run it I get an ugly Zope message: "This resource may be trying to reference a nonexistent object or variable sequence-var-get_size". What is the problem? There are objects that do not have a "get_size" method (e.g. Folder, Database Adapter, External Methods).

Check whether it exists before you use it. <dtml-if sequence-var-get_size> <dtml-var sequence-var-get_size> bytes </dtml-if> This will give you nothing for objects with size 0. But, this might not be a problem for you. If it is, you must use '<dtml-if expr="_.has_key('sequence-var-get_size')">'. Dieter