import datetime

from django.db import models

from django.utils.translation import ugettext_lazy as _

def standalone_number(self):

    return 1

class Numbers(object):

    @staticmethod

    def get_static_number(self):

        return 2

    @classmethod

    def get_class_number(self):

        return 3

    def get_member_number(self):

        return 4

nn = Numbers()

class Group(models.Model):

    name = models.CharField(_('name'), max_length=100)

class Event(models.Model):

    group = models.ForeignKey(Group)

class Happening(models.Model):

    when = models.DateTimeField(blank=True, default=datetime.datetime.now)

    name = models.CharField(blank=True, max_length=100, default=lambda:"test")

    number1 = models.IntegerField(blank=True, default=standalone_number)

    number2 = models.IntegerField(blank=True, default=Numbers.get_static_number)

    number3 = models.IntegerField(blank=True, default=Numbers.get_class_number)

    number4 = models.IntegerField(blank=True, default=nn.get_member_number)