Drilling down works on a functional level. Gotta set up interface and

tests.

On a related note, TAKE THAT DJANGO FILTERS.

djadmin2/filters.py

@@ -4,6 +4,7 @@ from __future__ import division, absolute_import, unicode_literals
 import collections
 from itertools import chain
 
+from django import forms
 from django.forms.util import flatatt
 from django.utils.html import format_html
 from django.utils.encoding import force_text
@@ -16,6 +17,10 @@ import django_filters
 LINK_TEMPLATE = '<a href=?{0}={1} {2}>{3}</a>'
 
 
+class NumericDateFilter(django_filters.DateFilter):
+    field_class = forms.IntegerField
+
+
 class ChoicesAsLinksWidget(django_widgets.Select):
     """Select form widget taht renders links for choices
     instead of select element with options.
@@ -95,6 +100,31 @@ def build_list_filter(request, model_admin, queryset):
     )(request.GET, queryset=queryset)
 
 
+def build_date_filter(request, model_admin, queryset):
+    filterset_dict = {
+        "year": NumericDateFilter(
+            name="published_date",
+            lookup_type="year",
+        ),
+        "month": NumericDateFilter(
+            name="published_date",
+            lookup_type="month",
+        ),
+        "day": NumericDateFilter(
+            name="published_date",
+            lookup_type="day",
+        )
+    }
+
+    newset = type(
+        b'%sDateFilterSet' % queryset.model.__name__,
+        (django_filters.FilterSet,),
+        filterset_dict,
+    )(request.GET, queryset=queryset)
+
+    return newset
+
+
 def get_filter_for_field_name(model, field_name):
     """Returns filter for model field by field name.
     """

djadmin2/settings.py

@@ -8,12 +8,11 @@ from django.conf import settings
 #   views. This is a security feature.
 # See the docstring on djadmin2.types.ModelAdmin2 for more detail.
 MODEL_ADMIN_ATTRS = (
-    'actions_selection_counter', 'list_display', 'list_display_links',
-    'list_filter', 'admin', 'search_fields', 'field_renderers',
-    'index_view', 'detail_view', 'create_view', 'update_view', 'delete_view',
-    'get_default_view_kwargs', 'get_list_actions',
-    'actions_on_bottom', 'actions_on_top',
-    'save_on_top', 'save_on_bottom',
-    'readonly_fields', )
+    'actions_selection_counter', "date_hierarchy", 'list_display',
+    'list_display_links', 'list_filter', 'admin', 'search_fields',
+    'field_renderers', 'index_view', 'detail_view', 'create_view',
+    'update_view', 'delete_view', 'get_default_view_kwargs',
+    'get_list_actions', 'actions_on_bottom', 'actions_on_top',
+    'save_on_top', 'save_on_bottom', 'readonly_fields', )
 
 ADMIN2_THEME_DIRECTORY = getattr(settings, "ADMIN2_THEME_DIRECTORY", "djadmin2theme_default")

djadmin2/types.py

@@ -59,6 +59,7 @@ class ModelAdmin2(with_metaclass(ModelAdminBase2)):
             bypass the blocking features of the ImmutableAdmin.
     """
     actions_selection_counter = True
+    date_hierarchy = False
     list_display = ('__str__',)
     list_display_links = ()
     list_filter = ()

djadmin2/views.py

@@ -26,7 +26,7 @@ from . import permissions, utils
 from .forms import AdminAuthenticationForm
 from .models import LogEntry
 from .viewmixins import Admin2Mixin, AdminModel2Mixin, Admin2ModelFormMixin
-from .filters import build_list_filter
+from .filters import build_list_filter, build_date_filter
 
 
 class AdminView(object):
@@ -155,6 +155,9 @@ class ModelListView(AdminModel2Mixin, generic.ListView):
         if self.model_admin.list_filter:
             queryset = self.build_list_filter(queryset).qs
 
+        if self.model_admin.date_hierarchy:
+            queryset = self.build_date_filter(queryset).qs
+
         queryset = self._modify_queryset_for_sort(queryset)
 
         if search_use_distinct:
@@ -194,6 +197,18 @@ class ModelListView(AdminModel2Mixin, generic.ListView):
             )
         return self._list_filter
 
+    def build_date_filter(self, queryset=None):
+        if not hasattr(self, "_date_filter"):
+            if queryset is None:
+                queryset = self.get_queryset()
+            self._date_filter = build_date_filter(
+                self.request,
+                self.model_admin,
+                queryset,
+            )
+
+        return self._date_filter
+
     def get_context_data(self, **kwargs):
         context = super(ModelListView, self).get_context_data(**kwargs)
         context['model'] = self.get_model()
@@ -202,6 +217,15 @@ class ModelListView(AdminModel2Mixin, generic.ListView):
         context['search_term'] = self.request.GET.get('q', '')
         context['list_filter'] = self.build_list_filter()
         context['sort_term'] = self.request.GET.get('sort', '')
+
+        if self.model_admin.date_hierarchy:
+            date_field = self.model_admin.date_hierarchy
+            context['years'] = (
+                context['object_list'].dates(date_field, "year")
+            )
+            context["days"] = (
+                context['object_list'].dates(date_field, "day")
+            )
         return context
 
     def get_success_url(self):

example/blog/admin.py

@@ -12,8 +12,9 @@ class CommentInline(admin.TabularInline):
 
 class PostAdmin(admin.ModelAdmin):
     inlines = [CommentInline, ]
-    search_fields = ('title', 'body')
+    search_fields = ('title', 'body', "published_date")
     list_filter = ['published', 'title']
+    date_hierarchy = "published_date"
 
 admin.site.register(Post, PostAdmin)
 admin.site.register(Comment)

example/blog/admin2.py

@@ -29,11 +29,12 @@ class PostAdmin(djadmin2.ModelAdmin2):
     list_actions = [DeleteSelectedAction, CustomPublishAction, unpublish_items]
     inlines = [CommentInline]
     search_fields = ('title', '^body')
-    list_display = ('title', 'body', 'published')
+    list_display = ('title', 'body', 'published', "published_date",)
     field_renderers = {
         'title': renderers.title_renderer,
     }
     save_on_top = True
+    date_hierarchy = "published_date"
 
 
 class CommentAdmin(djadmin2.ModelAdmin2):

example/blog/models.py

@@ -11,6 +11,7 @@ class Post(models.Model):
     title = models.CharField(max_length=255, verbose_name=_('title'))
     body = models.TextField(verbose_name=_('body'))
     published = models.BooleanField(default=False, verbose_name=_('published'))
+    published_date = models.DateField(auto_now=True)
 
     def __unicode__(self):
         return self.title