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:

            # Add arbitrary name to changed_data to test

            # change message construction.

            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)