django weight sort signal

django_weight_sort_signal is change order of Django signals sorting by using weight. its help you weight signal handling with third-party apps also without changing signal class

Installation

1. Install django-weight-sort-signal using pip:

   pip install django-weight-sort-signal
   

Configuration

1. settings.py:

   INSTALLED_APPS = [
           ...
           'django_weight_sort_signal',
       ]
   '''
   

Configuration for third party app signal usage

1. settings.py:

   INSTALLED_APPS = [
   
           'django_weight_sort_signal', #django_weight_sort_signal put into top in the INSTALLED_APPS
           'django.contrib.admin',
           'django.contrib.auth',
           ...
       ]
   '''
   
   DJANGO_WEIGHT_SORT_SIGNAL ={
       'DEFAULT_SIGNAL':True, #its help you weight signal handling with third-party apps without changing signal class
   
   }
   

Signal

1. signal.py:

   from django_weight_sort_signal.dispatcher import WeightSortSignal
   
   order_refresh = WeightSortSignal(providing_args=["order"])
   

Reciever

In receiver callback we can give weight to sort

1. receiver.py:

   from .signals import order_refresh
   
   from django_weight_sort_signal.dispatcher import receiver as weight_sort_receiver
   
   
   @weight_sort_receiver(order_refresh,weight=10)
   def tax_order_refresh(sender,order, **kwargs):
       #tax amount calculation functionality triggered on order_refresh signal dispatch
       pass
   
   
   @weight_sort_receiver(order_refresh,weight=20)
   def discount_order_refresh(sender,order, **kwargs):
       #discount amount calculation functionality triggered on order_refresh signal dispatch
       pass
   
   @weight_sort_receiver(order_refresh,weight=30)
   def shipping_order_refresh(sender,order, **kwargs):
       #shipping amount calculation functionality triggered on order_refresh signal dispatch
       pass
   

Reciever for third-party apps Eg:

In receiver callback we can give weight to sort without changing the base signal

1. receiver.py:

   from django.contrib.auth.signals import user_logged_in
   
   def do_stuff(sender, user, request, **kwargs):
       #ADD SOME CODE
   user_logged_in.connect(do_stuff,weight=10)
   
   def do_stuff2(sender, user, request, **kwargs):
       #ADD SOME CODE
   user_logged_in.connect(do_stuff2,weight=20)
   

We can dispatch signal anywhere as following.

Send :

1. from .signals import order_refresh
   
   
   order = Order.objects.get(pk=10001)
   order.status="review"
   order.save()
   order_refresh.send(sender=None,order=order)