hi
i have this model Client_Order
i want to do some manipulation each time a new pakg is added to this
field.
i used m2m_changed signal, but it cant distinguish between existing
instances attached and the newly added ones.
both post_add and pre_add show the same number of instances .. i.e if
a.b were attached and i added c instance to it .. both post_add and
pre_add give the same pk_set in kwargs
ACTV_STATUS = (
('Active','Active'),
('Inactive','Inactive'),
)
class Client_Order(models.Model):
order_name = models.CharField(max_length=300)
order_desc = models.TextField(verbose_name="Order
Description")
order_client = models.ForeignKey(Client_sda)
order_active_status = models.CharField(choices = ACTV_STATUS,
max_length=300)
order_pakages = models.ManyToManyField(Pakage,
help_text="Please attach a maximum of 5 packages only. ")
discount = models.IntegerField(default=0)
total_amount = models.IntegerField()
order_booking_date = models.DateField()
order_expiry_date = models.DateField()
@receiver(m2m_changed)
def handle_something(sender, instance, signal,*args, **kwargs):
print kwargs
print 'pk_set->',kwargs['pk_set']
how do i distinguish between newly added instances from previously
added ones ?
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