instaPaySignal.py

@receiver(post_save, sender=Payment)
def call_payment_api(sender, instance, created, **kwargs):
    if created:
        # Initiate a Beyonic Collection Request to request money from the user
        import beyonic
        beyonic.api_key = settings.BEYONIC_API_KEY
        response = beyonic.CollectionRequest.create(
            phonenumber=instance.phone_number,
            amount=instance.item.price,
            currency=instance.item.currency,
            description='Payment for ' + instance.item.model,
            callback_url=reverse('merchant_payment'),
            send_instructions=True
        )
        instance.request_response = str(response)
        instance.remote_id = response['id']
        instance.status = Payment.REQUEST_SENT
        instance.save()