Convert document cache clear view to CBV. Update message and link label to include the word 'image'.

mayan/apps/documents/links.py

@@ -147,8 +147,8 @@ link_clear_image_cache = Link(
     description=_(
         'Clear the graphics representations used to speed up the documents\' '
         'display and interactive transformations results.'
-    ),
-    permissions=(permission_document_tools,), text=_('Clear document cache'),
+    ), permissions=(permission_document_tools,),
+    text=_('Clear document image cache'),
     view='documents:document_clear_image_cache'
 )
 link_trash_can_empty = Link(

mayan/apps/documents/urls.py

@@ -14,16 +14,16 @@ from .api_views import (
 )
 from .settings import setting_print_size, setting_display_size
 from .views import (
-    DeletedDocumentDeleteView, DeletedDocumentDeleteManyView,
-    DeletedDocumentListView, DocumentEditView, DocumentListView,
-    DocumentPageView, DocumentPageListView, DocumentPageViewResetView,
-    DocumentPreviewView, DocumentRestoreView, DocumentRestoreManyView,
-    DocumentTrashView, DocumentTrashManyView, DocumentTypeCreateView,
-    DocumentTypeDeleteView, DocumentTypeDocumentListView,
-    DocumentTypeFilenameDeleteView, DocumentTypeFilenameEditView,
-    DocumentTypeFilenameListView, DocumentTypeListView, DocumentTypeEditView,
-    DocumentVersionListView, DocumentView, EmptyTrashCanView,
-    RecentDocumentListView
+    ClearImageCacheView, DeletedDocumentDeleteView,
+    DeletedDocumentDeleteManyView, DeletedDocumentListView, DocumentEditView,
+    DocumentListView, DocumentPageView, DocumentPageListView,
+    DocumentPageViewResetView, DocumentPreviewView, DocumentRestoreView,
+    DocumentRestoreManyView, DocumentTrashView, DocumentTrashManyView,
+    DocumentTypeCreateView, DocumentTypeDeleteView,
+    DocumentTypeDocumentListView, DocumentTypeFilenameDeleteView,
+    DocumentTypeFilenameEditView, DocumentTypeFilenameListView,
+    DocumentTypeListView, DocumentTypeEditView, DocumentVersionListView,
+    DocumentView, EmptyTrashCanView, RecentDocumentListView
 )
 
 urlpatterns = patterns(
@@ -145,7 +145,7 @@ urlpatterns = patterns(
         name='document_multiple_clear_transformations'
     ),
     url(
-        r'^cache/clear/$', 'document_clear_image_cache',
+        r'^cache/clear/$', ClearImageCacheView.as_view(),
         name='document_clear_image_cache'
     ),
     url(

mayan/apps/documents/views.py

@@ -62,6 +62,19 @@ from .utils import parse_range
 logger = logging.getLogger(__name__)
 
 
+class ClearImageCacheView(ConfirmView):
+    extra_context = {
+        'title': _('Clear the document image cache?')
+    }
+    view_permission = permission_document_tools
+
+    def view_action(self):
+        task_clear_image_cache.apply_async()
+        messages.success(
+            self.request, _('Document cache clearing queued successfully.')
+        )
+
+
 class DocumentListView(SingleObjectListView):
     extra_context = {
         'hide_links': True,
@@ -1179,23 +1192,6 @@ def document_type_filename_create(request, document_type_id):
     }, context_instance=RequestContext(request))
 
 
-def document_clear_image_cache(request):
-    Permission.check_permissions(request.user, (permission_document_tools,))
-
-    previous = request.POST.get('previous', request.GET.get('previous', request.META.get('HTTP_REFERER', reverse(settings.LOGIN_REDIRECT_URL))))
-
-    if request.method == 'POST':
-        task_clear_image_cache.apply_async()
-        messages.success(request, _('Document cache clearing queued successfully.'))
-
-        return HttpResponseRedirect(previous)
-
-    return render_to_response('appearance/generic_confirm.html', {
-        'previous': previous,
-        'title': _('Clear the document cache?'),
-    }, context_instance=RequestContext(request))
-
-
 def document_version_revert(request, document_version_pk):
     document_version = get_object_or_404(DocumentVersion, pk=document_version_pk)