How to conditionally require a field based on a selection in a form?
I am using Plone and z3c.forms. There is a field at the top that selects what content object we are creating. It then shows the fields needed to build that object.
I need to be able to conditionally require fields based on what content object is selected at the top of the form. Is this possible?
Solution
It is possible; what you need is called an "invariant validator". Have a look here.
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