Question

My UserProfile was working fine until I changed the model and form. I added a DateField in model and updated my Forms.py and template. Also did a syncdb.

profile/models.py

class UserProfiles(models.Model):
    user = models.OneToOneField(User)
    #other fields here
    birthday = models.DateField()

profile/forms.py

class UserProfileForm(ModelForm):
    class Meta:
        model = UserProfiles
        fields = ('some_field', 'birthday', 'otherfields')

profile/views.py

def editprofile(request):
    return render_to_response('profile_edit.html', {'form':UserProfileForm()}, context_instance=RequestContext(request))

This is the error it is throwing.

Traceback:
File "C:\Python27\lib\site-packages\django\core\handlers\base.py" in get_response
  111.                         response = callback(request, *callback_args, **callback_kwargs)
File "E:\django-sample\proschools\..\proschools\profile\views.py" in generateprofile
  12.             userprofile = UserProfiles.objects.get(user=request.user)
File "C:\Python27\lib\site-packages\django\db\models\manager.py" in get
  132.         return self.get_query_set().get(*args, **kwargs)
File "C:\Python27\lib\site-packages\django\db\models\query.py" in get
  344.         num = len(clone)
File "C:\Python27\lib\site-packages\django\db\models\query.py" in __len__
  82.                 self._result_cache = list(self.iterator())
File "C:\Python27\lib\site-packages\django\db\models\query.py" in iterator
  273.         for row in compiler.results_iter():
File "C:\Python27\lib\site-packages\django\db\models\sql\compiler.py" in results_iter
  680.         for rows in self.execute_sql(MULTI):
File "C:\Python27\lib\site-packages\django\db\models\sql\compiler.py" in execute_sql
  735.         cursor.execute(sql, params)
File "C:\Python27\lib\site-packages\django\db\backends\util.py" in execute
  34.             return self.cursor.execute(sql, params)
File "C:\Python27\lib\site-packages\django\db\backends\mysql\base.py" in execute
  86.             return self.cursor.execute(query, args)
File "C:\Python27\lib\site-packages\MySQLdb\cursors.py" in execute
  174.             self.errorhandler(self, exc, value)
File "C:\Python27\lib\site-packages\MySQLdb\connections.py" in defaulterrorhandler
  36.     raise errorclass, errorvalue

Exception Type: OperationalError at /profile/
Exception Value: (1054, "Unknown column 'profile_userprofiles.birthday' in 'field list'")

Answer 1

If the table existed before you added the new column syncdb will not add new columns to it! syncdb does not alter existing tables. Consider using Django south or else add the column manually.