Don't use the internal method, instead do unicode(self.location_type) + ' - '
On Jun 6, 9:27 pm, "M.Ganesh" <[EMAIL PROTECTED]> wrote: > Rajesh Dhawan wrote: > > >> My model : > > >> class phonenumber(models.Model): > >> location_type = models.ForeignKey(location_type) > >> location_description = models.CharField(max_length=50, blank=True) > > >> def __unicode__(self): > >> if self.location_description: > >> retval = self.location_description + ' - ' > >> else: > >> retval = self.location_type + ' - ' > >> return retval > > >> class Meta: > >> app_label = 'contacts' > > >> I get an error saying : > >> TypeError at /contacts/phonenumber/ > >> unsupported operand type(s) for +: 'location_type' and 'str' > > >> How do I get the location_type __unicode__ for the fk? > > > Emily's suggestion of renaming your ForeignKey to LocationType is a > > good one. If you want to follow more well-defined conventions while > > coding in Python look at PEP 8 here:http://www.python.org/dev/peps/pep-0008/ > > > Adding __unicode__ or __str__ methods to your location_type class is > > not sufficient for the above to work because the + operator can not be > > used in this way where location_type is not a string. > > > Here are ways that would work: > > > retval = unicode(self.location_type) + ' - ' > > retval = '%s-' % self.location_type > > > For these two snippets to work 'correctly', you should define > > __unicode__ on your location_type model class. The two snippets above > > will still work without this method, but you will get Python's > > internal representation of location_type. > > > For a better understanding of this look at __repr__, __str__, and > > __unicode__ here:http://docs.python.org/ref/customization.html > > Thanks everybody, the following worked: > retval = self.location_type.__unicode__() + ' - ' > > Emily & Rajesh: > This is my first django project and I was eager to have it up and > running. Sure I'll read up on coding conventions and change my code > accordingly. Thanks once again > > Regards Ganesh --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
