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from django.contrib import admin
from polymorphic.admin import PolymorphicInlineSupportMixin, StackedPolymorphicInline
from .models import BankPayment, CreditCardPayment, Order, Payment, SepaPayment
class CreditCardPaymentInline(StackedPolymorphicInline.Child):
model = CreditCardPayment
class BankPaymentInline(StackedPolymorphicInline.Child):
model = BankPayment
class SepaPaymentInline(StackedPolymorphicInline.Child):
model = SepaPayment
class PaymentInline(StackedPolymorphicInline):
"""
An inline for a polymorphic model.
The actual form appearance of each row is determined by
the child inline that corresponds with the actual model type.
"""
model = Payment
child_inlines = (CreditCardPaymentInline, BankPaymentInline, SepaPaymentInline)
@admin.register(Order)
class OrderAdmin(PolymorphicInlineSupportMixin, admin.ModelAdmin):
"""
Admin for orders.
The inline is polymorphic.
To make sure the inlines are properly handled,
the ``PolymorphicInlineSupportMixin`` is needed to
"""
inlines = (PaymentInline,)
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