Queries with no result record causes internal error

[Akihiro KAYAMA]

Queries with no result record like query:?status=reopened causes internal error

Traceback (most recent call last):
  File "/usr/pkg/lib/python2.4/site-packages/trac/web/main.py", line 379, in dispatch_request
    dispatcher.dispatch(req)
  File "/usr/pkg/lib/python2.4/site-packages/trac/web/main.py", line 232, in dispatch
    template, content_type = self._post_process_request(req,
  File "/usr/pkg/lib/python2.4/site-packages/trac/web/main.py", line 262, in _post_process_request
    content_type)
  File "/usr/pkg/lib/python2.4/site-packages/TracPaginateTickets-0.1-py2.4.egg/paginate/web_ui.py", line 42, in post_process_request
    results_dict = walk_hdf(req.hdf.getObj('query.results').child())
AttributeError: 'NoneType' object has no attribute 'child'

[Akihiro KAYAMA]

Following patch will solve this problem. (includes ticket:1306 patch)

--- paginateticketsplugin/0.10/paginate/web_ui.py.orig	2006-09-04 02:54:38.000000000 +0900
+++ paginateticketsplugin/0.10/paginate/web_ui.py	2007-03-14 20:27:27.000000000 +0900
@@ -39,8 +39,12 @@
                         ret[node.name()] = node.value()
                     node = node.next()
                 return ret                
-            results_dict = walk_hdf(req.hdf.getObj('query.results').child())
-            results = [results_dict[k] for k in sorted(results_dict.keys())]
+            results = []
+            root = req.hdf.getObj('query.results')
+            if root is not None:
+                results_dict = walk_hdf(root.child())
+                results = [results_dict[str(k)] for k in
+                           sorted([int(key) for key in results_dict.keys()])]
 
             # Update/retrieve the number of tickets per page
             perpage = req.session.get('tickets_perpage')
@@ -50,7 +54,10 @@
                 perpage = int(perpage)
 
             # Calculate number of pages and current page
-            numpages = int(math.ceil(len(results) * 1.0 / perpage))
+            if len(results) == 0:
+                numpages = 1
+            else:
+                numpages = int(math.ceil(len(results) * 1.0 / perpage))
             curpage = int(req.args.get('page', 1))
             if curpage <= 0 or curpage > numpages:
                 raise TracError, 'Invalid page %s'%(curpage)

[Ryan J Ollos]

This plugin is deprecated with Trac 0.11. The functionality was integrated to the Trac core in ​t:#216.