old_contents: from django.db import models
  
  class Event(models.Model):
      pass
  
  class Location(models.Model):
      pass
  
  class Contact(models.Model):
      pass
  
  class Resource(models.Model):
      pass
  
  class Contacts(models.Model):
      pass
  
new_contents: from django.db import models
  
  class Event(models.Model):
      contacts = models.ManyToMany(Contact)
      capacity = models.IntegerField
      setup_start = models.DateField
      setup_end = model.DateField
      event_start = model.DateField
      event_end = model.DateField
      teardown_start = model.DateField
      teardown_end = model.DateField
      needed_resources = models.ManyToMany(Resource)
      status = models.CharField(length=255, blank=False)
      visibility = models.CharField(length=255, blank=False)
      event_organizer = models.ForeignKey(Organization)
  
  class Location(models.Model):
      personel = models.ForeignKey('User')
      location_name = models.CharField(length=255, blank=False)
      availability = models.CharField(length=255, blank=False)
  
  class Organization(models.Model):
      name = models.CharField(length=255, blank=False)
      phone_number = models.CharField(length=11, blank=True)
      email = models.CharField(length=255)
  
  class Resource(models.Model):
      isFixed = models.BooleanField
      resourceType = models.CharField(length=255, blank=False)
      description = models.CharField(length=255, blank=True)
      location = models.ForeignKey(Location, null=True)
  
  
subject: Add basic data models.