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

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

pip install django-weight-sort-signal

Configuration

#. settings.py::

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

Configuration for third party app signal usage

#. 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

#. 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

#. 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

#. 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 :

#. ::

from .signals import order_refresh


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