add arbitrary name to changeddata to test change message construction add arbitrary name to changed_data to test change message construction
from django import forms
from django.contrib import admin

from .models import Article, ArticleProxy, Site


class ArticleAdminForm(forms.ModelForm):
    nolabel_form_field = forms.BooleanField(required=False)

    class Meta:
        model = Article
        fields = ["title"]

    @property
    def changed_data(self):
        data = super().changed_data
        if data:
            
            
            return data + ["not_a_form_field"]
        return data


class ArticleInline(admin.TabularInline):
    model = Article
    fields = ["title"]
    form = ArticleAdminForm


class SiteAdmin(admin.ModelAdmin):
    inlines = [ArticleInline]


site = admin.AdminSite(name="admin")
site.register(Article)
site.register(ArticleProxy)
site.register(Site, SiteAdmin)


class CustomAdminSite(admin.AdminSite):
    def get_log_entries(self, request):
        from django.contrib.contenttypes.models import ContentType

        log_entries = super().get_log_entries(request)
        return log_entries.filter(
            content_type__in=ContentType.objects.get_for_models(
                *self._registry.keys()
            ).values()
        )


custom_site = CustomAdminSite(name="custom_admin")
custom_site.register(Article)