Question

I have this models.py

from django.db import models
from django.contrib.auth.models import User

class Service(models.Model):
    user = models.ForeignKey(User)
    name = models.CharField(max_length=800, blank=False)
    service = models.CharField(max_length=2000, blank=False)
    def __unicode__(self):
        return self.name

class ServiceCheck(models.Model):
    service = models.ForeignKey(Service)
    check_status = models.CharField(max_length=80)
    check_time = models.DateTimeField()

When i run syncdb against postgresql it ends up with error:

~/dev-md> sudo python manage.py syncdb
Creating tables ...
Creating table monitor_service
Creating table monitor_servicecheck

DatabaseError: Hash/Modulo distribution column does not refer to hash/modulo distribution column in referenced table.

Answer 1

Code looks okay upon first glance. I suspect it’s a database related issue.

As the max_lengths provided are pretty huge, try reducing the max_lengths to something <= 255 or use a TextField instead of a CharField.

Failing this, try renaming the field service in Service and/or ServiceCheck.