akaihola wrote:
Actually, the manipulator doesn't even know about the default values of
the model.
Why that? If you just create AddManipulator and get its flatten_data
you'll get default values of the model.
Your example is based on hidden fields with default values. However,
I've understood that it's considered bad practice [1].
No, I didn't suggest using hidden fields. I suggested normal visible
fields prefilled with default values.
If you don't want to give user a chance to edit them then yes it would
be better not to expose them in forms at all and just set them manually
before save.
You also can make a default manipulator not complain about those fields
being absent on validation. Give them "editable=False" in the model.
Then manipulator will omit them.
