Some general UI enhancements.

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

diff --git a/forum/models/node.py b/forum/models/node.py
index 9e734d26df9e641a14c0d76bea8591bacfbb79a1..6f4e12b0429823bb4abad4d6243e18356e882c33 100644 (file)
--- a/forum/models/node.py
+++ b/forum/models/node.py
@@ -2,6 +2,7 @@ from base import *
 from tag import Tag\r
 \r
 import markdown\r
 from tag import Tag\r
 \r
 import markdown\r

+from django.utils.translation import ugettext as _\r

 from django.utils.safestring import mark_safe\r
 from django.utils.html import strip_tags\r
 from forum.utils.html import sanitize_html\r
 from django.utils.safestring import mark_safe\r
 from django.utils.html import strip_tags\r
 from forum.utils.html import sanitize_html\r


@@ -18,7 +19,10 @@ class NodeContent(models.Model):
 \r
     @property\r
     def html(self):\r
 \r
     @property\r
     def html(self):\r

-        return mark_safe(sanitize_html(markdown.markdown(self.body)))\r
+        return self.as_markdown()\r
+\r
+    def as_markdown(self, *extensions):\r
+        return mark_safe(sanitize_html(markdown.markdown(self.body, extensions=extensions)))\r

 \r
     @property\r
     def headline(self):\r
 \r
     @property\r
     def headline(self):\r


@@ -26,25 +30,26 @@ class NodeContent(models.Model):
 \r
     def tagname_list(self):\r
         if self.tagnames:\r
 \r
     def tagname_list(self):\r
         if self.tagnames:\r

-            return [name for name in self.tagnames.split(u' ')]\r
+            t = [name.strip() for name in self.tagnames.split(u' ') if name]\r
+            return [name.strip() for name in self.tagnames.split(u' ') if name]\r

         else:\r
             return []\r
 \r
     def tagname_meta_generator(self):\r
         else:\r
             return []\r
 \r
     def tagname_meta_generator(self):\r

-        return u','.join([unicode(tag) for tag in self.tagname_list()])\r
+        return u','.join([tag for tag in self.tagname_list()])\r

 \r
     class Meta:\r
         abstract = True\r
         app_label = 'forum'\r
 \r
 \r
     class Meta:\r
         abstract = True\r
         app_label = 'forum'\r
 \r

-class NodeMetaClass(models.Model.__metaclass__):\r
+class NodeMetaClass(BaseMetaClass):\r

     types = {}\r
 \r
     def __new__(cls, *args, **kwargs):\r
         new_cls = super(NodeMetaClass, cls).__new__(cls, *args, **kwargs)\r
 \r
         if not new_cls._meta.abstract and new_cls.__name__ is not 'Node':\r
     types = {}\r
 \r
     def __new__(cls, *args, **kwargs):\r
         new_cls = super(NodeMetaClass, cls).__new__(cls, *args, **kwargs)\r
 \r
         if not new_cls._meta.abstract and new_cls.__name__ is not 'Node':\r

-            NodeMetaClass.types[new_cls.__name__.lower()] = new_cls\r
+            NodeMetaClass.types[new_cls.get_type()] = new_cls\r

 \r
         return new_cls\r
 \r
 \r
         return new_cls\r
 \r


@@ -58,10 +63,7 @@ class NodeMetaClass(models.Model.__metaclass__):
         name = node_cls.__name__.lower()\r
 \r
         def children(self):\r
         name = node_cls.__name__.lower()\r
 \r
         def children(self):\r

-            if node_cls._meta.proxy:\r
-                return node_cls.objects.filter(node_type=name, parent=self)\r
-            else:\r
-                return node_cls.objects.filter(parent=self)\r
+            return node_cls.objects.filter(parent=self)\r

 \r
         def parent(self):\r
             p = self.__dict__.get('_%s_cache' % name, None)\r
 \r
         def parent(self):\r
             p = self.__dict__.get('_%s_cache' % name, None)\r


@@ -76,10 +78,33 @@ class NodeMetaClass(models.Model.__metaclass__):
         Node.add_to_class(name, property(parent))\r
 \r
 \r
         Node.add_to_class(name, property(parent))\r
 \r
 \r

-node_create = django.dispatch.Signal(providing_args=['instance'])\r
-node_edit = django.dispatch.Signal(providing_args=['instance'])\r
+class NodeQuerySet(CachedQuerySet):\r
+    def get(self, *args, **kwargs):\r
+        node = super(NodeQuerySet, self).get(*args, **kwargs)\r
+        cls = NodeMetaClass.types.get(node.node_type, None)\r
+\r
+        if cls and (node.__class__ is not cls):\r
+            return node.leaf\r
+        return node\r
+\r

 \r
 \r

-class Node(BaseModel, NodeContent, DeletableContent):\r
+class NodeManager(CachedManager):\r
+    use_for_related_fields = True\r
+\r
+    def get_query_set(self):\r
+        qs = NodeQuerySet(self.model)\r
+\r
+        if self.model is not Node:\r
+            return qs.filter(node_type=self.model.get_type())\r
+        else:\r
+            return qs\r
+\r
+    def get_for_types(self, types, *args, **kwargs):\r
+        kwargs['node_type__in'] = [t.get_type() for t in types]\r
+        return self.get(*args, **kwargs)\r
+\r
+\r
+class Node(BaseModel, NodeContent):\r

     __metaclass__ = NodeMetaClass\r
 \r
     node_type            = models.CharField(max_length=16, default='node')\r
     __metaclass__ = NodeMetaClass\r
 \r
     node_type            = models.CharField(max_length=16, default='node')\r


@@ -87,24 +112,50 @@ class Node(BaseModel, NodeContent, DeletableContent):
     abs_parent           = models.ForeignKey('Node', related_name='all_children', null=True)\r
 \r
     added_at             = models.DateTimeField(default=datetime.datetime.now)\r
     abs_parent           = models.ForeignKey('Node', related_name='all_children', null=True)\r
 \r
     added_at             = models.DateTimeField(default=datetime.datetime.now)\r

+    score                 = models.IntegerField(default=0)\r
+\r
+    deleted               = models.ForeignKey('Action', null=True, unique=True, related_name="deleted_node")\r
+    in_moderation         = models.ForeignKey('Action', null=True, unique=True, related_name="moderated_node")\r
+    last_edited           = models.ForeignKey('Action', null=True, unique=True, related_name="edited_node")\r
+\r
+    last_activity_by       = models.ForeignKey(User, null=True)\r
+    last_activity_at       = models.DateTimeField(null=True, blank=True)\r

 \r
     tags                 = models.ManyToManyField('Tag', related_name='%(class)ss')\r
 \r
     tags                 = models.ManyToManyField('Tag', related_name='%(class)ss')\r

+    active_revision       = models.OneToOneField('NodeRevision', related_name='active', null=True)\r

 \r
 \r

-    score                 = models.IntegerField(default=0)\r
-    vote_up_count         = models.IntegerField(default=0)\r
-    vote_down_count       = models.IntegerField(default=0)\r
+    extra_ref = models.ForeignKey('Node', null=True)\r
+    extra_count = models.IntegerField(default=0)\r
+    extra_action = models.ForeignKey('Action', null=True, related_name="extra_node")\r
+    \r
+    marked = models.BooleanField(default=False)\r
+    wiki = models.BooleanField(default=False)\r

 \r
 \r

-    comment_count         = models.PositiveIntegerField(default=0)\r
-    offensive_flag_count  = models.SmallIntegerField(default=0)\r
+    comment_count = DenormalizedField("children", node_type="comment", canceled=False)\r
+    flag_count = DenormalizedField("flags")\r

 \r
 \r

-    last_edited_at        = models.DateTimeField(null=True, blank=True)\r
-    last_edited_by        = models.ForeignKey(User, null=True, blank=True, related_name='last_edited_%(class)ss')\r
+    friendly_name = _("post")\r

 \r
 \r

-    active_revision       = models.OneToOneField('NodeRevision', related_name='active', null=True)\r
+    objects = NodeManager()\r
+\r
+    @classmethod\r
+    def cache_key(cls, pk):\r
+        return '%s.node:%s' % (settings.APP_URL, pk)\r
+\r
+    @classmethod\r
+    def get_type(cls):\r
+        return cls.__name__.lower()\r

 \r
     @property\r
     def leaf(self):\r
 \r
     @property\r
     def leaf(self):\r

-        return NodeMetaClass.types[self.node_type].objects.get(id=self.id)\r
+        leaf_cls = NodeMetaClass.types.get(self.node_type, None)\r
+\r
+        if leaf_cls is None:\r
+            return self\r
+\r
+        leaf = leaf_cls()\r
+        leaf.__dict__ = self.__dict__\r
+        return leaf\r

 \r
     @property    \r
     def absolute_parent(self):\r
 \r
     @property    \r
     def absolute_parent(self):\r


@@ -117,95 +168,126 @@ class Node(BaseModel, NodeContent, DeletableContent):
     def summary(self):\r
         return strip_tags(self.html)[:300]\r
 \r
     def summary(self):\r
         return strip_tags(self.html)[:300]\r
 \r

-    def create_revision(self, user, **kwargs):\r
-        revision = NodeRevision(author=user, **kwargs)\r
-        \r
-        if not self.id:\r
-            self.author = user\r
+    @models.permalink\r
+    def get_revisions_url(self):\r
+        return ('revisions', (), {'id': self.id})\r
+\r
+    def update_last_activity(self, user, save=False):\r
+        self.last_activity_by = user\r
+        self.last_activity_at = datetime.datetime.now()\r
+\r
+        if self.parent:\r
+            self.parent.update_last_activity(user, save=True)\r
+\r
+        if save:\r

             self.save()\r
             self.save()\r

-            revision.revision = 1\r
-        else:\r
-            revision.revision = self.revisions.aggregate(last=models.Max('revision'))['last'] + 1\r

 \r
 \r

-        revision.node_id = self.id\r
+    def _create_revision(self, user, number, **kwargs):\r
+        revision = NodeRevision(author=user, revision=number, node=self, **kwargs)\r

         revision.save()\r
         revision.save()\r

+        return revision\r
+\r
+    def create_revision(self, user, **kwargs):\r
+        number = self.revisions.aggregate(last=models.Max('revision'))['last'] + 1\r
+        revision = self._create_revision(user, number, **kwargs)\r

         self.activate_revision(user, revision)\r
         self.activate_revision(user, revision)\r

+        return revision\r

 \r
     def activate_revision(self, user, revision):\r
         self.title = revision.title\r
         self.tagnames = revision.tagnames\r
         self.body = revision.body\r
 \r
 \r
     def activate_revision(self, user, revision):\r
         self.title = revision.title\r
         self.tagnames = revision.tagnames\r
         self.body = revision.body\r
 \r

-        old_revision = self.active_revision\r

         self.active_revision = revision\r
         self.active_revision = revision\r

-\r
-        if not old_revision:\r
-            signal = node_create\r
-        else:\r
-            self.last_edited_at = datetime.datetime.now()\r
-            self.last_edited_by = user\r
-            signal = node_edit\r
+        self.update_last_activity(user)\r

 \r
         self.save()\r
 \r
         self.save()\r

-        signal.send(sender=self.__class__, instance=self)\r

 \r
 \r

-    def get_tag_list_if_changed(self):\r
+    def _list_changes_in_tags(self):\r

         dirty = self.get_dirty_fields()\r
 \r
         dirty = self.get_dirty_fields()\r
 \r

-        if 'tagnames' in dirty:\r
-            new_tags = self.tagname_list()\r
-            old_tags = dirty['tagnames']\r
-\r
-            if old_tags is None or not old_tags:\r
-                old_tags = []\r
+        if not 'tagnames' in dirty:\r
+            return None\r
+        else:\r
+            if dirty['tagnames']:\r
+                old_tags = set(name for name in dirty['tagnames'].split(u' '))\r

             else:\r
             else:\r

-                old_tags = [name for name in dirty['tagnames'].split(u' ')]\r
+                old_tags = set()\r
+            new_tags = set(name for name in self.tagnames.split(u' ') if name)\r
+\r
+            return dict(\r
+                current=list(new_tags),\r
+                added=list(new_tags - old_tags),\r
+                removed=list(old_tags - new_tags)\r
+            )\r

 \r
 \r

-            tag_list = []\r
+    def _last_active_user(self):\r
+        return self.last_edited and self.last_edited.by or self.author\r

 \r
 \r

-            for name in new_tags:\r
+    def _process_changes_in_tags(self):\r
+        tag_changes = self._list_changes_in_tags()\r
+\r
+        if tag_changes is not None:\r
+            for name in tag_changes['added']:\r

                 try:\r
                     tag = Tag.objects.get(name=name)\r
                 except:\r
                 try:\r
                     tag = Tag.objects.get(name=name)\r
                 except:\r

-                    tag = Tag.objects.create(name=name, created_by=self.last_edited_by or self.author)\r
-\r
-                tag_list.append(tag)\r
+                    tag = Tag.objects.create(name=name, created_by=self._last_active_user())\r

 \r
 \r

-                if not name in old_tags:\r
-                    tag.used_count = tag.used_count + 1\r
-                    if tag.deleted:\r
-                        tag.unmark_deleted()\r
+                if not self.deleted:\r
+                    tag.used_count = models.F('used_count') + 1\r

                     tag.save()\r
 \r
                     tag.save()\r
 \r

-            for name in [n for n in old_tags if not n in new_tags]:\r
-                tag = Tag.objects.get(name=name)\r
-                tag.used_count = tag.used_count - 1\r
-                if tag.used_count == 0:\r
-                    tag.mark_deleted(self.last_edited_by or self.author)\r
-                tag.save()\r
+            if not self.deleted:\r
+                for name in tag_changes['removed']:\r
+                    try:\r
+                        tag = Tag.objects.get(name=name)\r
+                        tag.used_count = models.F('used_count') - 1\r
+                        tag.save()\r
+                        if tag.used_count == 0:\r
+                            tag.mark_deleted(self._last_active_user())\r
+                    except:\r
+                        pass\r
+\r
+            return True\r
+\r
+        return False\r

 \r
 \r

-            return tag_list\r
+    def mark_deleted(self, action):\r
+        self.deleted = action\r
+        self.save()\r

 \r
 \r

-        return None\r
+        if action:\r
+            for tag in self.tags.all():\r
+                tag.used_count = models.F('used_count') - 1\r
+                tag.save()\r
+                if tag.used_count == 0:\r
+                    tag.mark_deleted(self._last_active_user())\r
+        else:\r
+            for tag in Tag.objects.filter(name__in=self.tagname_list()):\r
+                tag.used_count = models.F('used_count') + 1\r
+                tag.save()\r

 \r
     def save(self, *args, **kwargs):\r
         if not self.id:\r
 \r
     def save(self, *args, **kwargs):\r
         if not self.id:\r

-            self.node_type = self.__class__.__name__.lower()\r
+            self.node_type = self.get_type()\r
+            super(BaseModel, self).save(*args, **kwargs)\r
+            self.active_revision = self._create_revision(self.author, 1, title=self.title, tagnames=self.tagnames, body=self.body)\r
+            self.update_last_activity(self.author)\r

 \r
         if self.parent_id and not self.abs_parent_id:\r
             self.abs_parent = self.parent.absolute_parent\r
 \r
 \r
         if self.parent_id and not self.abs_parent_id:\r
             self.abs_parent = self.parent.absolute_parent\r
 \r

-        self.__dict__['score'] = self.__dict__['vote_up_count'] - self.__dict__['vote_down_count']\r
-            \r
-        tags = self.get_tag_list_if_changed()\r
+        tags_changed = self._process_changes_in_tags()\r
+\r

         super(Node, self).save(*args, **kwargs)\r
         super(Node, self).save(*args, **kwargs)\r

-        if tags is not None: self.tags = tags\r
+        if tags_changed: self.tags = list(Tag.objects.filter(name__in=self.tagname_list()))\r

 \r
     class Meta:\r
         app_label = 'forum'\r
 \r
 \r
 \r
     class Meta:\r
         app_label = 'forum'\r
 \r
 \r

-class NodeRevision(NodeContent):\r
+class NodeRevision(BaseModel, NodeContent):\r

     node       = models.ForeignKey(Node, related_name='revisions')\r
     summary    = models.CharField(max_length=300)\r
     revision   = models.PositiveIntegerField()\r
     node       = models.ForeignKey(Node, related_name='revisions')\r
     summary    = models.CharField(max_length=300)\r
     revision   = models.PositiveIntegerField()\r


@@ -216,11 +298,3 @@ class NodeRevision(NodeContent):
         app_label = 'forum'\r
 \r
 \r
         app_label = 'forum'\r
 \r
 \r

-from user import ValidationHash\r
-\r
-class AnonymousNode(Node):\r
-    validation_hash = models.ForeignKey(Node, related_name='anonymous_content')\r
-    convertible_to = models.CharField(max_length=16, default='node')\r
-\r
-    class Meta:\r
-        app_label = 'forum'
\ No newline at end of file