Finished conversion of Mayan to the new document grouping app and paradigm

apps/grouping/utils.py

@@ -0,0 +1,36 @@
+from django.utils.translation import ugettext_lazy as _
+from django.contrib import messages
+from django.core.urlresolvers import reverse
+
+from grouping.models import DocumentGroup
+from grouping.conf.settings import SHOW_EMPTY_GROUPS
+from grouping.forms import DocumentDataGroupForm
+from grouping import document_group_link
+
+
+def get_document_group_subtemplate(request, document):
+    document_groups, errors = DocumentGroup.objects.get_groups_for(document)
+    if (request.user.is_staff or request.user.is_superuser) and errors:
+        for error in errors:
+            messages.warning(request, _(u'Document group query error: %s' % error))
+
+    if not SHOW_EMPTY_GROUPS:
+        #If GROUP_SHOW_EMPTY is False, remove empty groups from
+        #dictionary
+        document_groups = dict([(group, data) for group, data in document_groups.items() if data['documents']])
+
+    if document_groups:
+        return {
+            'name': 'generic_form_subtemplate.html',
+            'context': {
+                'title': _(u'document groups (%s)') % len(document_groups.keys()),
+                'form': DocumentDataGroupForm(
+                    groups=document_groups, current_document=document,
+                    links=[document_group_link]
+                ),
+                'form_action': reverse('document_group_action'),
+                'submit_method': 'GET',
+            }
+        }
+    else:
+        return None