old_contents: from django.db import models
  
  # Create your models here.
  class User(models.Model):
  	pass
  
  class Suggestion(models.Model):
  	pass
  
  class Event(models.Model):
  	pass
  
new_contents: from django.db import models
  
  
  class Suggestion(models.Model):
  	YES = 'Y'
  	NO = 'N'
  	MAYBE = 'M'
  	NONE = 'O'
  	RESPONSE_CHOICES = (
  		(YES, 'Yes'),
  		(NO, 'No'),
  		(MAYBE, 'Maybe'),
  		(NONE, 'No vote'),
  	)
  	
  	#user=
  	response = models.CharField(
  		max_length=1,
  		choices=RESPONSE_CHOICES,
  		default=NONE)
  	#suggestion_type=
  	time = models.DateTime(
  		null=True,
  		blank=True
  	)
  	#location=
  	#group=
  	#activity=
  
  	
  class Event(models.Model):
  	#owner=
  	#invites=
  	description = models.TextField()
  	#location=
  	start_time = models.DateTime()
  	end_time = models.DateTime(
  		null=True,
  		blank=True
  	)
  
  
  class Invite(models.Model):
  	YES = 'Y'
  	NO = 'N'
  	MAYBE_YES = 'MY'
  	MAYBE_NO = 'MN'
  	NONE = 'O'
  	RSVP_CHOICES = (
  		(YES, 'Yes'),
  		(NO, 'No'),
  		(MAYBE_YES, 'Maybe Yes'),
  		(MAYBE_NO, 'Maybe No'),
  		(NONE, 'No response'),
  	)
  	#event
  	#user
  	rsvp = models.CharField(
  		max_length=2,
  		choices=RSVP_CHOICESm
  		default=NONE)
  		
  
subject: Add some fields to models