def pre_delete_remove_from_friends(sender, instance, **kwargs):
sender = instance.sender
receiver = instance.receiver
sender.friends.remove(receiver.user)
receiver.friends.remove(sender.user)
sender.save()
receiver.save()
def deleting(sender, instance, **kwargs):
sender = instance.sender
receiver = instance.receiver
sender.followers.remove(receiver.user)
receiver.followers.remove(sender.user)
sender.save()
receiver.save()
def pre_delete_remove_from_follower(sender, instance, **kwargs):
sender = instance.sender
receiver = instance.receiver
sender.followed_user.remove(receiver.user)
receiver.followed_user.remove(sender.user)
sender.save()
receiver.save()
def Remove_Friend_From_List(sender, instance, **kwargs):
sender = instance.sender
receiver = instance.receiver
sender.friends.remove(receiver.user)
receiver.friends.remove(sender.user)
sender.save()
receiver.save()
def pre_delete_remove_connection(sender, instance, **kwargs):
sender = instance.sender
receiver = instance.receiver
sender.connections.remove(receiver.user)
receiver.connections.remove(sender.user)
sender.save()
receiver.save()
def post_save_remove_from_friends(sender, created, instance, **kwargs):
sender = instance.sender
receiver = instance.receiver
if instance.status == 'deleted':
sender.friends.remove(receiver)
receiver.friends.remove(receiver)
sender.save()
receiver.save()
def post_save_add_to_friends(sender, created, instance, **kwargs):
sender = instance.sender
receiver = instance.receiver
if instance.status == 'accepted':
sender.friends.add(receiver)
receiver.friends.add(receiver)
sender.save()
receiver.save()
def pre_delete_remove_from_friends(sender, instance, **kwargs):
"""before the relationship get deleted,it is removed from friends"""
# here sender is instance of Relationship
sender = instance.sender
receiver = instance.receiver
sender.friends.remove(receiver.id)
receiver.friends.remove(sender.id)
sender.save()
receiver.save()
def update_receiver_and_giver_models_after_donation(sender, **kwargs):
donation = kwargs.get('instance')
update_amount = donation.amount
## If is update, update_amount is only difference between two amounts
if donation.pk:
old_amount = Donation.objects.get(pk=donation.pk).amount
update_amount = donation.amount - old_amount
receiver = donation.receiver
receiver.amount_received += update_amount
receiver.save()
giver = donation.giver
giver.amount_given += update_amount
giver.save()
def pre_delete_remove_from_friends(sender, instance, **kwargs):
'''
this mehod will remove two user in a relationship and will break the conection between them
with the help of signals i.e if an invitation is rejected or a friend is unfriended them both
users prfile will be updated to each and friend count will decrease .
:param name: sender - The model class that just had an instance created
:param name: **kwargs -A dictionary of keyword arguments passed to __init__()
:param type: variable
:param name: created -A boolean; True if a new record was created
:param type: variable
:return: boolean
'''
sender = instance.sender
receiver = instance.receiver
sender.friends.remove(receiver.user)
receiver.friends.remove(sender.user)
sender.save()
receiver.save()
