Add a smarter work-around for the change-list-results hack

src/documents/templates/admin/change_list_results.html

@@ -1,6 +0,0 @@
-{% load hacks %}
-
-{# See documents.templatetags.hacks.change_list_results for an explanation #}
-
-{% change_list_results %}
-

src/documents/templates/admin/documents/document/change_list.html

@@ -0,0 +1,12 @@
+{% extends 'admin/change_list.html' %}
+
+
+{% load admin_actions from admin_list%}
+{% load result_list from hacks %}
+
+
+{% block result_list %}
+	{% if action_form and actions_on_top and cl.show_admin_actions %}{% admin_actions %}{% endif %}
+	{% result_list cl %}
+	{% if action_form and actions_on_bottom and cl.show_admin_actions %}{% admin_actions %}{% endif %}
+{% endblock %}

src/documents/templatetags/hacks.py

@@ -1,41 +1,28 @@
-import os
-
-from django.contrib import admin
+from django.contrib.admin.templatetags.admin_list import (
+    result_headers,
+    result_hidden_fields,
+    results
+)
 from django.template import Library
-from django.template.loader import get_template
-
-from ..models import Document
 
 
 register = Library()
 
 
-@register.simple_tag(takes_context=True)
-def change_list_results(context):
+@register.inclusion_tag("admin/documents/document/change_list_results.html")
+def result_list(cl):
     """
-    Django has a lot of places where you can override defaults, but
-    unfortunately, `change_list_results.html` is not one of them.  In fact,
-    it's a downright pain in the ass to override this file on a per-model basis
-    and this is the cleanest way I could come up with.
-
-    Basically all we've done here is defined `change_list_results.html` in an
-    `admin` directory which globally overrides that file for *every* model.
-    That template however simply loads this templatetag which determines
-    whether we're currently looking at a `Document` listing or something else
-    and loads the appropriate file in each case.
-
-    Better work arounds for this are welcome as I hate this myself, but at the
-    moment, it's all I could come up with.
+    Copy/pasted from django.contrib.admin.templatetags.admin_list just so I can
+    modify the value passed to `.inclusion_tag()` in the decorator here.  There
+    must be a cleaner way... right?
     """
-
-    path = os.path.join(
-        os.path.dirname(admin.__file__),
-        "templates",
-        "admin",
-        "change_list_results.html"
-    )
-
-    if context["cl"].model == Document:
-        path = "admin/documents/document/change_list_results.html"
-
-    return get_template(path).render(context)
+    headers = list(result_headers(cl))
+    num_sorted_fields = 0
+    for h in headers:
+        if h['sortable'] and h['sorted']:
+            num_sorted_fields += 1
+    return {'cl': cl,
+            'result_hidden_fields': list(result_hidden_fields(cl)),
+            'result_headers': headers,
+            'num_sorted_fields': num_sorted_fields,
+            'results': list(results(cl))}