How to create an object of another model in Django Admin on the edit page of one model?

Question

Python

Good afternoon.

In the admin panel, when you click on the button on the edit page of one model, make sure that an object of another model is created:

from loans.models import Bid, Payment

@admin.register(Bid)
class Bid(admin.ModelAdmin):
    change_form_template = "admin/my_admin_bid.html"

        def response_change(self, request, obj):
        if "_make_paid" in request.POST:
            obj.state = 'PAID'
            obj.save()
            Payment.objects.create(bid=obj, amount=amount)
            # Получаю Error: AttributeError: type object 'Payment' has no attribute 'objects'
            self.message_user(request, "This loan mark as PAID")
            return HttpResponseRedirect(".")
        return super().response_change(request, obj)

Can't google the solution.

Answer 1

Works like this:

class Bid(admin.ModelAdmin):
    change_form_template = "admin/my_admin_bid.html"

        def response_change(self, request, obj):
        if "_make_paid" in request.POST:
            obj.state = 'PAID'
            obj.save()
            obj.payment.create(bid=obj, amount=amount)
            self.message_user(request, "This loan mark as PAID")
            return HttpResponseRedirect(".")
        return super().response_change(request, obj)

Instead of Payment.objects.create(bid=obj, amount=amount)
We write this obj.payment.create(bid=obj, amount=amount)