On admin change view, exception raised from __unicode__ method of model related by fk is "hidden" and instead view without form shown

[okrutny]

I have a model PolcardPayments which references Order by fk.

class PolcardPayments(models.Model):
    order = models.ForeignKey(Order, null=True)

Order.__unicode__

was not correctly implemented, raising UnicodeEncodeError.

When I entered change view of PolcardPayments as admin, form was not shown. I found in logs that UnicodeEncodeError is raised.

Expected behavour would be to raise 500 error and process same way as other such errors.

[okrutny]

empty change view