# HG changeset patch
# User Goffi <goffi@goffi.org>
# Date 1521369241 -3600
# Node ID 5e809a49971c01947ebcbf08642b7690038c1223
# Parent  808ec98de8b3e53afe3fdbb976021bd2d6f09f9a
pages: new pages_tools module:

this module will have helper methods which are common but not common enough to be in the main LiberviaPage class.
A first method retrieve comments and convert them to data objects.

diff -r 808ec98de8b3 -r 5e809a49971c src/server/pages_tools.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/server/pages_tools.py	Sun Mar 18 11:34:01 2018 +0100
@@ -0,0 +1,62 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+# Libervia: a Salut à Toi frontend
+# Copyright (C) 2011-2018 Jérôme Poisson <goffi@goffi.org>
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+"""Helper methods for common operations on pages"""
+
+from sat.core.i18n import _
+from libervia.server.constants import Const as C
+from twisted.internet import defer
+from sat.core.log import getLogger
+log = getLogger(__name__)
+from sat.tools.common import data_objects
+
+
+def commentsDataToObjects(comments_data):
+    return data_objects.BlogItems(comments_data)
+
+
+def retrieveComments(self, service, node, profile, pass_exceptions=True):
+    """Retrieve comments from server and convert them to data objects
+
+    @param service(unicode): service holding the comments
+    @param node(unicode): node to retrieve
+    @param profile(unicode): profile of the user willing to find comments
+    @param pass_exceptions(bool): if True bridge exceptions will be ignored but logged
+        else exception will be raised
+    """
+    try:
+        d = self.host.bridgeCall(u'mbGet',
+            service,
+            node,
+            C.NO_LIMIT,
+            [],
+            {},
+            profile)
+    except Exception as e:
+        if not pass_exceptions:
+            raise e
+        else:
+            log.warning(_(u"Can't get comments at {node} (service: {service}): {msg}").format(
+                service=service,
+                node=node,
+                msg=e))
+            return defer.succeed([])
+
+    d.addCallback(commentsDataToObjects)
+    return d