Fix tsvector generation for tickets as 'group' is a reserved word in …

…prostgres. Renaming column

src/onegov/search/upgrade.py

@@ -2,3 +2,16 @@
 upgraded on the server. See :class:`onegov.core.upgrade.upgrade_task`.
 
 """
+from onegov.core.upgrade import upgrade_task
+
+
+@upgrade_task('rename tickets column group to group_name')
+def rename_tickets_column_group_to_group_name(context):
+    # Renaming the column group to group_name as 'group' is a reserved word
+    # in postgres and reindexing fails while generating the tsvector string
+
+    if context.has_column('tickets', 'group'):
+        context.session.execute("""
+            ALTER TABLE tickets
+            RENAME COLUMN group to group_name;
+        """)

src/onegov/ticket/model.py

@@ -37,8 +37,8 @@ class Ticket(Base, TimestampMixin, ORMSearchable):
     subtitle = Column(Text, nullable=True)
 
     #: the group this ticket belongs to. used to differentiate tickets
-    #: belonging to one specific handler (handler -> group -> title)
-    group = Column(Text, nullable=False)
+    #: belonging to one specific handler (handler -> group_name -> title)
+    group_name = Column(Text, nullable=False)
 
     #: the name of the handler associated with this ticket, may be used to
     #: create custom polymorphic subclasses of this class. See
@@ -115,7 +115,7 @@ def created(cls):
         'number': {'type': 'text'},
         'title': {'type': 'text'},
         'subtitle': {'type': 'text'},
-        'group': {'type': 'text'},
+        'group_name': {'type': 'text'},
         # properties cannot be added to search index
         # 'ticket_email': {'type': 'keyword'},
         # 'ticket_data': {'type': 'localized_html'},