Wraps the markdowner call with a try except block, and logs the possible errors.

[osqa.git] / forum / models / node.py

diff --git a/forum/models/node.py b/forum/models/node.py
index bf05cb54beb0f24be0ec6d6daf6ee886c5f35aa4..6d8a4834f3a6a5a244a65dae748173fb26a09775 100644 (file)
--- a/forum/models/node.py
+++ b/forum/models/node.py
@@ -23,8 +23,18 @@ class NodeContent(models.Model):
     def html(self):
         return self.as_markdown()
 
+    @classmethod
+    def _as_markdown(cls, content, *extensions):
+        try:
+            return mark_safe(sanitize_html(markdown.markdown(content, extensions=extensions)))
+        except Exception, e:
+            import traceback
+            logging.error("Caught exception %s in markdown parser rendering %s %s:\s %s" % (
+                str(e), cls.__name__, str(e), traceback.format_exc()))
+            return ''
+
     def as_markdown(self, *extensions):
-        return mark_safe(sanitize_html(markdown.markdown(self.body, extensions=extensions)))
+        return self._as_markdown(self.body, *extensions)
 
     @property
     def headline(self):
@@ -58,7 +68,7 @@ class NodeMetaClass(BaseMetaClass):
     @classmethod
     def setup_relations(cls):
         for node_cls in NodeMetaClass.types.values():
-            NodeMetaClass.setup_relation(node_cls)        
+            NodeMetaClass.setup_relation(node_cls)
 
     @classmethod
     def setup_relation(cls, node_cls):
@@ -91,12 +101,20 @@ class NodeQuerySet(CachedQuerySet):
             return super(NodeQuerySet, self).obj_from_datadict(datadict)
 
     def get(self, *args, **kwargs):
-        return super(NodeQuerySet, self).get(*args, **kwargs).leaf
+        node = super(NodeQuerySet, self).get(*args, **kwargs).leaf
+
+        if not isinstance(node, self.model):
+            raise self.model.DoesNotExist()
+
+        return node
 
     def filter_state(self, **kwargs):
         apply_bool = lambda q, b: b and q or ~q
         return self.filter(*[apply_bool(models.Q(state_string__contains="(%s)" % s), b) for s, b in kwargs.items()])
 
+    def children_count(self, child_type):
+        return NodeMetaClass.types[child_type].objects.filter_state(deleted=False).filter(parent__in=self).count()
+
 
 class NodeManager(CachedManager):
     use_for_related_fields = True
@@ -167,7 +185,6 @@ class NodeStateQuery(object):
         return "(%s)" % name in node.state_string
 
 
-
 class Node(BaseModel, NodeContent):
     __metaclass__ = NodeMetaClass
 
@@ -246,7 +263,7 @@ class Node(BaseModel, NodeContent):
     def deleted(self):
         return self.nis.deleted
 
-    @property    
+    @property
     def absolute_parent(self):
         if not self.abs_parent_id:
             return self
@@ -305,10 +322,10 @@ class Node(BaseModel, NodeContent):
             new_tags = set(name for name in self.tagnames.split(u' ') if name)
 
             return dict(
-                current=list(new_tags),
-                added=list(new_tags - old_tags),
-                removed=list(old_tags - new_tags)
-            )
+                    current=list(new_tags),
+                    added=list(new_tags - old_tags),
+                    removed=list(old_tags - new_tags)
+                    )
 
     def _last_active_user(self):
         return self.last_edited and self.last_edited.by or self.author
@@ -324,14 +341,14 @@ class Node(BaseModel, NodeContent):
                     tag = Tag.objects.create(name=name, created_by=self._last_active_user())
 
                 if not self.nis.deleted:
-                    tag.used_count = models.F('used_count') + 1
+                    tag.add_to_usage_count(1)
                     tag.save()
 
             if not self.nis.deleted:
                 for name in tag_changes['removed']:
                     try:
                         tag = Tag.objects.get(name=name)
-                        tag.used_count = models.F('used_count') - 1
+                        tag.add_to_usage_count(-1)
                         tag.save()
                     except:
                         pass
@@ -346,20 +363,21 @@ class Node(BaseModel, NodeContent):
 
         if action:
             for tag in self.tags.all():
-                tag.used_count = models.F('used_count') - 1
+                tag.add_to_usage_count(-1)
                 tag.save()
         else:
             for tag in Tag.objects.filter(name__in=self.tagname_list()):
-                tag.used_count = models.F('used_count') + 1
+                tag.add_to_usage_count(1)
                 tag.save()
 
     def save(self, *args, **kwargs):
         tags_changed = self._process_changes_in_tags()
-        
+
         if not self.id:
             self.node_type = self.get_type()
             super(BaseModel, self).save(*args, **kwargs)
-            self.active_revision = self._create_revision(self.author, 1, title=self.title, tagnames=self.tagnames, body=self.body)
+            self.active_revision = self._create_revision(self.author, 1, title=self.title, tagnames=self.tagnames,
+                                                         body=self.body)
             self.update_last_activity(self.author)
 
         if self.parent_id and not self.abs_parent_id: