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I'm currently working on teaching myself Zope 3/Five by converting
one of my products to as many new technologies as I can put in. I'm
coming against one issue that must be a pretty common pattern, at
least for Zope 2/Five applications, which I haven't been able to solve:
I have a schema field where I want to validate the value based on
information stored on the container where the object with the schema
in question is stored (or will be stored, in the case of a formlib
addview). I can see that fields are not context-aware by default, but
they do have a method "bind" to generate a clone that does have
access to the current context. However, the programmer has to pass a
context (any context, really) to this method himself, but when the
validation/constraints are called up there is no context.
How do others handle this situation?
jens
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