def chat(self):
""" returns the chat according to the users
:returns: Chat object of user1 and user2
"""
return Chat.by_users(self.user1, self.user2, create=True)
def get_chat_with_partner(self, partner):
""" get the listing related chat
:param partner: User that want to chat about this listing
:returns: Chat object
"""
return Chat.by_users(self.user, partner, create=True)
