class MenuItem(models.Model):
    name = models.CharField()
    description = models.TextField()
    price = models.FloatField()
    menu = models.ForeignKey(Menu)
    group = models.ForeignKey(MenuGroup)

class MenuGroup(models.Model):
   name = models.CharField()

class Menu(models.Model):
    name = models.CharField()

"""
Looping example
"""

for menu in menus:
(menu.name: "Burger Menu")

    for group in groups:
        (group.name: "Mains")

         for item in items if item.group == group
             (item.name: big burger!)