I'm trying to make a custom manager for a few models. The objective is
to limit user access to information in the database belonging to the
company of which they are a member.
I think I want to say:
class Something(models.Model):
...
objects = MemberManager()
But when I run manage.py runserver I get:
AttributeError: 'MemberManager' object has no attribute '_inherited'
Here is the code:
from django.db import models
from company.models import *
class MemberManager(models.Manager):
"""
The manager in every model using this manager must return ONLY
rows belonging to the User's company. company.models.Member is
the table which links a member (ie user) to a particular company
in company.models.Company. Each member can be connected to exactly
zero or one company. If zero raise BusinessRuleViolation exception
otherwise return the company with which to filter query sets using
the user's company.
"""
def __init__(self, request=None):
self.user = None
if request and request.user and request.user.is_authenticated():
self.user = request.user
def get_company(self):
if self.user:
user_row = Member.objects.get(user=self.user)
return user_row.company
def get_query_set(self):
coy = self.get_company()
if coy:
return super(MemberManager,
self).get_query_set().filter(company=coy)
raise BusinessRuleViolation('User must be a company Member')
From the research I've done it seems I should not have the __init__()
in this and indeed if I experimentally factor it out it the error goes away.
The doc string says what I'm trying to do but maybe there is a better
way than a custom manager.
Thanks for any pointers
Mike
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