Model error_message 'required' gets overridden by default_error_message

[Oskar Haller]

When creating a custom user model I tried the following.

error_messages={'required': _('Please enter your last name.')}

However, it get's overridden by the default_error_message "This field is required."

Unless I specify the 'required' error_message in my form.

This is related to this bug-report 5-years ago https://code.djangoproject.com/ticket/22105 . Is the behavior above still considered 'deliberate'. If so could you elaborate on it? I really see no explanation why this could be wanted.

[Tim Graham]

​It's documented:

Error messages defined on model fields are only used when the ValidationError is raised during the model validation step and no corresponding error messages are defined at the form level.

Changing the behavior would be backwards incompatible. If you want to propose changing it, try putting together a patch and presenting a proposal on the DevelopersMailingList. That said, the rationale at ticket:22105#comment:1 makes sense to me so I'm not sure that a proposal has much chance of success.

I'd ask that you not create duplicate tickets (of #22105 in this case) and instead use DevelopersMailingList for design decision reconsiderations.

[Oskar Haller]

Alright, thanks for the link to the documentation and clarification. I'll post the link under the old ticket as well.