Django, error when trying to add search fields in the admin interface -

i trying add search field in admin interface userprofile class.

this models.py:

class userprofile(models.model):     user = models.foreignkey(user, default=none, null=true,                              related_name='profile')  # don't judge me. had use null=true     registered = models.booleanfield(default=false)     activated = models.booleanfield(default=false)     activation_key = models.charfield(max_length=128)     receive_notifications = models.booleanfield(default=false)     email = models.charfield(max_length=80, default='')      def __unicode__(self):         return self.email 

and admin.py:

from main.models import userprofile django.contrib import admin  class userprofileadmin(admin.modeladmin):     search_fields = ['email']  admin.site.register(userprofileadmin) 

when try run server error:

'mediadefiningclass' object not iterable @ line register userprofileadmin.

what doing wrong?

this

admin.site.register(userprofileadmin) 

should

admin.site.register(userprofile, userprofileadmin)