Missing context content with multiple inheritance

[cfra]

Setup

I ran into this issue in a real live use-case, and created the following distilled version which allows to reproduce the issue:

from django_context_decorator import context
from django.views.generic import TemplateView

class BaseView(TemplateView):
    template_name = "example.html"

    @context
    @property
    def bg_image(self):
        return "BaseView.bg_image"

    @context
    @property
    def heading(self):
        return "BaseView.heading"

    @context
    @property
    def subheading(self):
        return "BaseView.subheading"


class MixinView:
    @context
    @property
    def bg_image(self):
        return "MixinView.bg_image"


class DescendantView(BaseView):
    @context
    @property
    def heading(self):
        return "DescendantView.heading"


class MixedView(MixinView, DescendantView):
    @context
    @property
    def subheading(self):
        return "MixedView.subheading"

Observed Behavior

When MixedView gets rendered, bg_image and subheading are set correctly in the context, but heading is missing completely.

Expected Behavior

heading should be present in the context with value DescendantView.heading.

[rixx]

Definitely a bug – happy to take pull requests!