Make sure that cache is always cleaned while performing an update

ram/ram/admin.py

@@ -1,22 +1,60 @@
-from django.contrib import admin
 from django.conf import settings
+from django.contrib import admin
+from django.core.cache import cache
 
 admin.site.site_header = settings.SITE_NAME
 
 
 def publish(modeladmin, request, queryset):
-    for obj in queryset:
-        obj.published = True
-        obj.save()
+    queryset.update(published=True)
+    cache.clear()
 
 
 publish.short_description = "Publish selected items"
 
 
 def unpublish(modeladmin, request, queryset):
-    for obj in queryset:
-        obj.published = False
-        obj.save()
+    queryset.update(published=False)
+    cache.clear()
 
 
 unpublish.short_description = "Unpublish selected items"
+
+
+def set_featured(modeladmin, request, queryset):
+    count = queryset.count()
+    if count > settings.FEATURED_ITEMS_MAX:
+        modeladmin.message_user(
+            request,
+            "You can only mark up to {} items as featured.".format(
+                settings.FEATURED_ITEMS_MAX
+            ),
+            level="error",
+        )
+        return
+    featured = modeladmin.model.objects.filter(featured=True).count()
+    if featured + count > settings.FEATURED_ITEMS_MAX:
+        modeladmin.message_user(
+            request,
+            "There are already {} featured items. You can only mark {} more items as featured.".format(  # noqa: E501
+                featured,
+                settings.FEATURED_ITEMS_MAX - featured,
+            ),
+            level="error",
+        )
+        return
+    queryset.update(featured=True)
+    cache.clear()
+
+
+set_featured.short_description = "Mark selected items as featured"
+
+
+def unset_featured(modeladmin, request, queryset):
+    queryset.update(featured=False)
+    cache.clear()
+
+
+unset_featured.short_description = (
+    "Unmark selected items as featured"
+)

ram/roster/admin.py

@@ -6,8 +6,8 @@ from django.utils.html import format_html, format_html_join, strip_tags
 
 from adminsortable2.admin import SortableAdminBase, SortableInlineAdminMixin
 
-from ram.admin import publish, unpublish
 from ram.utils import generate_csv
+from ram.admin import publish, unpublish, set_featured, unset_featured
 from repository.models import RollingStockDocument
 from portal.utils import get_site_conf
 from roster.models import (
@@ -303,37 +303,4 @@ class RollingStockAdmin(SortableAdminBase, admin.ModelAdmin):
 
     download_csv.short_description = "Download selected items as CSV"
 
-    def set_featured(modeladmin, request, queryset):
-        count = queryset.count()
-        if count > settings.FEATURED_ITEMS_MAX:
-            modeladmin.message_user(
-                request,
-                "You can only mark up to {} items as featured.".format(
-                    settings.FEATURED_ITEMS_MAX
-                ),
-                level="error",
-            )
-            return
-        featured = RollingStock.objects.filter(featured=True).count()
-        if featured + count > settings.FEATURED_ITEMS_MAX:
-            modeladmin.message_user(
-                request,
-                "There are already {} featured items. You can only mark {} more items as featured.".format(  # noqa: E501
-                    featured,
-                    settings.FEATURED_ITEMS_MAX - featured,
-                ),
-                level="error",
-            )
-            return
-        queryset.update(featured=True)
-
-    set_featured.short_description = "Mark selected rolling stock as featured"
-
-    def unset_featured(modeladmin, request, queryset):
-        queryset.update(featured=False)
-
-    unset_featured.short_description = (
-        "Unmark selected rolling stock as featured"
-    )
-
     actions = [publish, unpublish, set_featured, unset_featured, download_csv]