-from base import *\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
-\r
-class NodeContent(models.Model):\r
- title = models.CharField(max_length=300)\r
- tagnames = models.CharField(max_length=125)\r
- author = models.ForeignKey(User, related_name='%(class)ss')\r
- body = models.TextField()\r
-\r
- @property\r
- def user(self):\r
- return self.author\r
-\r
- @property\r
- def html(self):\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
- return self.title\r
-\r
- def tagname_list(self):\r
- if self.tagnames:\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
- return u','.join([tag for tag in self.tagname_list()])\r
-\r
- class Meta:\r
- abstract = True\r
- app_label = 'forum'\r
-\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
- NodeMetaClass.types[new_cls.get_type()] = new_cls\r
-\r
- return new_cls\r
-\r
- @classmethod\r
- def setup_relations(cls):\r
- for node_cls in NodeMetaClass.types.values():\r
- NodeMetaClass.setup_relation(node_cls) \r
-\r
- @classmethod\r
- def setup_relation(cls, node_cls):\r
- name = node_cls.__name__.lower()\r
-\r
- def children(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
- if p is None and (self.parent is not None) and self.parent.node_type == name:\r
- p = self.parent.leaf\r
- self.__dict__['_%s_cache' % name] = p\r
-\r
- return p\r
-\r
- Node.add_to_class(name + 's', property(children))\r
- Node.add_to_class(name, property(parent))\r
-\r
-\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
-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
- parent = models.ForeignKey('Node', related_name='children', null=True)\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
- active_revision = models.OneToOneField('NodeRevision', related_name='active', null=True)\r
-\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
- comment_count = DenormalizedField("children", node_type="comment", canceled=False)\r
- flag_count = DenormalizedField("flags")\r
-\r
- friendly_name = _("post")\r
-\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
- 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
- if not self.abs_parent_id:\r
- return self.leaf\r
-\r
- return self.abs_parent.leaf\r
-\r
- @property\r
- def summary(self):\r
- return strip_tags(self.html)[:300]\r
-\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
-\r
- def _create_revision(self, user, number, **kwargs):\r
- revision = NodeRevision(author=user, revision=number, node=self, **kwargs)\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
- 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
- self.active_revision = revision\r
- self.update_last_activity(user)\r
-\r
- self.save()\r
-\r
- def get_tag_list_if_changed(self):\r
- dirty = self.get_dirty_fields()\r
- active_user = self.last_edited and self.last_edited.by or self.author\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
- else:\r
- old_tags = [name for name in dirty['tagnames'].split(u' ')]\r
-\r
- tag_list = []\r
-\r
- for name in new_tags:\r
- try:\r
- tag = Tag.objects.get(name=name)\r
- except:\r
- tag = Tag.objects.create(name=name, created_by=active_user or self.author)\r
-\r
- tag_list.append(tag)\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
- 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(active_user)\r
- tag.save()\r
-\r
- return tag_list\r
-\r
- return None\r
-\r
- def save(self, *args, **kwargs):\r
- if not self.id:\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
- tags = self.get_tag_list_if_changed()\r
- super(Node, self).save(*args, **kwargs)\r
- if tags is not None: self.tags = tags\r
-\r
- class Meta:\r
- app_label = 'forum'\r
-\r
-\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
- revised_at = models.DateTimeField(default=datetime.datetime.now)\r
-\r
- class Meta:\r
- unique_together = ('node', 'revision')\r
- app_label = 'forum'\r
-\r
-\r
+# -*- coding: utf-8 -*-
+
+from base import *
+import re
+from tag import Tag
+
+import markdown
+from django.utils.encoding import smart_unicode
+from django.utils.translation import ugettext as _
+from django.utils.safestring import mark_safe
+from django.utils.html import strip_tags
+from forum.utils.html import sanitize_html
+from forum.utils.userlinking import auto_user_link
+from forum.settings import SUMMARY_LENGTH
+from utils import PickledObjectField
+
+class NodeContent(models.Model):
+ title = models.CharField(max_length=300)
+ tagnames = models.CharField(max_length=125)
+ author = models.ForeignKey(User, related_name='%(class)ss')
+ body = models.TextField()
+
+ @property
+ def user(self):
+ return self.author
+
+ @property
+ def html(self):
+ return self.body
+
+ def rendered(self, content):
+ return auto_user_link(self, self._as_markdown(content, *['auto_linker']))
+
+ @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 self._as_markdown(smart_unicode(self.body), *extensions)
+
+ @property
+ def headline(self):
+ title = self.title
+
+ # Replaces multiple spaces with single ones.
+ title = re.sub(' +',' ', title)
+
+ return title
+
+ def tagname_list(self):
+ if self.tagnames:
+ return [name.strip() for name in self.tagnames.split() if name]
+ else:
+ return []
+
+ def tagname_meta_generator(self):
+ return u','.join([tag for tag in self.tagname_list()])
+
+ class Meta:
+ abstract = True
+ app_label = 'forum'
+
+class NodeMetaClass(BaseMetaClass):
+ types = {}
+
+ def __new__(cls, *args, **kwargs):
+ new_cls = super(NodeMetaClass, cls).__new__(cls, *args, **kwargs)
+
+ if not new_cls._meta.abstract and new_cls.__name__ is not 'Node':
+ NodeMetaClass.types[new_cls.get_type()] = new_cls
+
+ return new_cls
+
+ @classmethod
+ def setup_relations(cls):
+ for node_cls in NodeMetaClass.types.values():
+ NodeMetaClass.setup_relation(node_cls)
+
+ @classmethod
+ def setup_relation(cls, node_cls):
+ name = node_cls.__name__.lower()
+
+ def children(self):
+ return node_cls.objects.filter(parent=self)
+
+ def parent(self):
+ if (self.parent is not None) and self.parent.node_type == name:
+ return self.parent.leaf
+
+ return None
+
+ Node.add_to_class(name + 's', property(children))
+ Node.add_to_class(name, property(parent))
+
+
+class NodeQuerySet(CachedQuerySet):
+ def obj_from_datadict(self, datadict):
+ cls = NodeMetaClass.types.get(datadict.get("node_type", ""), None)
+ if cls:
+ obj = cls()
+ obj.__dict__.update(datadict)
+ return obj
+ else:
+ return super(NodeQuerySet, self).obj_from_datadict(datadict)
+
+ def get(self, *args, **kwargs):
+ node = super(NodeQuerySet, self).get(*args, **kwargs).leaf
+
+ if not isinstance(node, self.model):
+ raise self.model.DoesNotExist()
+
+ return node
+
+ def any_state(self, *args):
+ filter = None
+
+ for s in args:
+ s_filter = models.Q(state_string__contains="(%s)" % s)
+ filter = filter and (filter | s_filter) or s_filter
+
+ if filter:
+ return self.filter(filter)
+ else:
+ return self
+
+ def all_states(self, *args):
+ filter = None
+
+ for s in args:
+ s_filter = models.Q(state_string__contains="(%s)" % s)
+ filter = filter and (filter & s_filter) or s_filter
+
+ if filter:
+ return self.filter(filter)
+ else:
+ return self
+
+ 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
+
+ def get_query_set(self):
+ qs = NodeQuerySet(self.model)
+
+ # If the node is an answer, question or comment we filter the Node model by type
+ if self.model is not Node:
+ qs = qs.filter(node_type=self.model.get_type())
+
+ return qs
+
+ def get_for_types(self, types, *args, **kwargs):
+ kwargs['node_type__in'] = [t.get_type() for t in types]
+ return self.get(*args, **kwargs)
+
+ def filter_state(self, **kwargs):
+ return self.all().filter_state(**kwargs)
+
+
+class NodeStateDict(object):
+ def __init__(self, node):
+ self.__dict__['_node'] = node
+
+ def __getattr__(self, name):
+ if self.__dict__.get(name, None):
+ return self.__dict__[name]
+
+ try:
+ node = self.__dict__['_node']
+ action = NodeState.objects.get(node=node, state_type=name).action
+ self.__dict__[name] = action
+ return action
+ except:
+ return None
+
+ def __setattr__(self, name, value):
+ current = self.__getattr__(name)
+
+ if value:
+ if current:
+ current.action = value
+ current.save()
+ else:
+ node = self.__dict__['_node']
+ state = NodeState(node=node, action=value, state_type=name)
+ state.save()
+ self.__dict__[name] = value
+
+ if not "(%s)" % name in node.state_string:
+ node.state_string = "%s(%s)" % (node.state_string, name)
+ node.save()
+ else:
+ if current:
+ node = self.__dict__['_node']
+ node.state_string = "".join("(%s)" % s for s in re.findall('\w+', node.state_string) if s != name)
+ node.save()
+ current.node_state.delete()
+ del self.__dict__[name]
+
+
+class NodeStateQuery(object):
+ def __init__(self, node):
+ self.__dict__['_node'] = node
+
+ def __getattr__(self, name):
+ node = self.__dict__['_node']
+ return "(%s)" % name in node.state_string
+
+
+class Node(BaseModel, NodeContent):
+ __metaclass__ = NodeMetaClass
+
+ node_type = models.CharField(max_length=16, default='node')
+ parent = models.ForeignKey('Node', related_name='children', null=True)
+ abs_parent = models.ForeignKey('Node', related_name='all_children', null=True)
+
+ added_at = models.DateTimeField(default=datetime.datetime.now)
+ score = models.IntegerField(default=0)
+
+ state_string = models.TextField(default='')
+ last_edited = models.ForeignKey('Action', null=True, unique=True, related_name="edited_node")
+
+ last_activity_by = models.ForeignKey(User, null=True)
+ last_activity_at = models.DateTimeField(null=True, blank=True)
+
+ tags = models.ManyToManyField('Tag', related_name='%(class)ss')
+ active_revision = models.OneToOneField('NodeRevision', related_name='active', null=True)
+
+ extra = PickledObjectField()
+ extra_ref = models.ForeignKey('Node', null=True)
+ extra_count = models.IntegerField(default=0)
+
+ marked = models.BooleanField(default=False)
+
+ comment_count = DenormalizedField("children", node_type="comment", canceled=False)
+ flag_count = DenormalizedField("actions", action_type="flag", canceled=False)
+
+ friendly_name = _("post")
+
+ objects = NodeManager()
+
+ def __unicode__(self):
+ return self.headline
+
+ @classmethod
+ def _generate_cache_key(cls, key, group="node"):
+ return super(Node, cls)._generate_cache_key(key, group)
+
+ @classmethod
+ def get_type(cls):
+ return cls.__name__.lower()
+
+ @property
+ def leaf(self):
+ leaf_cls = NodeMetaClass.types.get(self.node_type, None)
+
+ if leaf_cls is None:
+ return self
+
+ leaf = leaf_cls()
+ leaf.__dict__ = self.__dict__
+ return leaf
+
+ @property
+ def nstate(self):
+ state = self.__dict__.get('_nstate', None)
+
+ if state is None:
+ state = NodeStateDict(self)
+ self._nstate = state
+
+ return state
+
+ @property
+ def nis(self):
+ nis = self.__dict__.get('_nis', None)
+
+ if nis is None:
+ nis = NodeStateQuery(self)
+ self._nis = nis
+
+ return nis
+
+ @property
+ def last_activity(self):
+ try:
+ return self.actions.order_by('-action_date')[0].action_date
+ except:
+ return self.last_seen
+
+ @property
+ def state_list(self):
+ return [s.state_type for s in self.states.all()]
+
+ @property
+ def deleted(self):
+ return self.nis.deleted
+
+ @property
+ def absolute_parent(self):
+ if not self.abs_parent_id:
+ return self
+
+ return self.abs_parent
+
+ @property
+ def summary(self):
+ content = strip_tags(self.html)
+
+ # Remove multiple spaces.
+ content = re.sub(' +',' ', content)
+
+ # Replace line breaks with a space, we don't need them at all.
+ content = content.replace("\n", ' ')
+
+ # Truncate and all an ellipsis if length greater than summary length.
+ content = (content[:SUMMARY_LENGTH] + '...') if len(content) > SUMMARY_LENGTH else content
+
+ return content
+
+ # Can be used to block subscription notifications for a specific node from a module
+ def _is_notifiable(self):
+ return True
+
+ @property
+ def is_notifiable(self):
+ return self._is_notifiable()
+
+ @models.permalink
+ def get_revisions_url(self):
+ return ('revisions', (), {'id': self.id})
+
+ def update_last_activity(self, user, save=False, time=None):
+ if not time:
+ time = datetime.datetime.now()
+
+ self.last_activity_by = user
+ self.last_activity_at = time
+
+ if self.parent:
+ self.parent.update_last_activity(user, save=True, time=time)
+
+ if save:
+ self.save()
+
+ def _create_revision(self, user, number, **kwargs):
+ revision = NodeRevision(author=user, revision=number, node=self, **kwargs)
+ revision.save()
+ return revision
+
+ def create_revision(self, user, **kwargs):
+ number = self.revisions.aggregate(last=models.Max('revision'))['last'] + 1
+ revision = self._create_revision(user, number, **kwargs)
+ self.activate_revision(user, revision)
+ return revision
+
+ def activate_revision(self, user, revision):
+ self.title = revision.title
+ self.tagnames = revision.tagnames
+
+ self.body = self.rendered(revision.body)
+
+ self.active_revision = revision
+
+ # Try getting the previous revision
+ try:
+ prev_revision = NodeRevision.objects.get(node=self, revision=revision.revision-1)
+
+ update_activity = True
+
+ # Do not update the activity if only the tags are changed
+ if prev_revision.title == revision.title and prev_revision.body == revision.body \
+ and prev_revision.tagnames != revision.tagnames and not settings.UPDATE_LATEST_ACTIVITY_ON_TAG_EDIT:
+ update_activity = False
+ except NodeRevision.DoesNotExist:
+ update_activity = True
+ finally:
+ if update_activity:
+ self.update_last_activity(user)
+
+ self.save()
+
+ def get_active_users(self, active_users = None):
+ if not active_users:
+ active_users = set()
+
+ active_users.add(self.author)
+
+ for node in self.children.all():
+ if not node.nis.deleted:
+ node.get_active_users(active_users)
+
+ return active_users
+
+ def get_last_edited(self):
+ if not self.last_edited:
+ try:
+ le = self.actions.exclude(action_type__in=('voteup', 'votedown', 'flag'), canceled=True).order_by('-action_date')[0]
+ self.last_edited = le
+ self.save()
+ except:
+ pass
+
+ return self.last_edited
+
+
+ def _list_changes_in_tags(self):
+ dirty = self.get_dirty_fields()
+
+ if not 'tagnames' in dirty:
+ return None
+ else:
+ if self._original_state['tagnames']:
+ old_tags = set(self._original_state['tagnames'].split())
+ else:
+ old_tags = set()
+ new_tags = set(self.tagnames.split())
+
+ return dict(
+ 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
+
+ def _process_changes_in_tags(self):
+ tag_changes = self._list_changes_in_tags()
+
+ if tag_changes is not None:
+ for name in tag_changes['added']:
+ try:
+ tag = Tag.objects.get(name=name)
+ except Tag.DoesNotExist:
+ tag = Tag.objects.create(name=name, created_by=self._last_active_user())
+
+ if not self.nis.deleted:
+ 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.add_to_usage_count(-1)
+ tag.save()
+ except:
+ pass
+
+ return True
+
+ return False
+
+ def mark_deleted(self, action):
+ self.nstate.deleted = action
+ self.save()
+
+ if action:
+ for tag in self.tags.all():
+ tag.add_to_usage_count(-1)
+ tag.save()
+ else:
+ for tag in Tag.objects.filter(name__in=self.tagname_list()):
+ tag.add_to_usage_count(1)
+ tag.save()
+
+ def delete(self, *args, **kwargs):
+ for tag in self.tags.all():
+ tag.add_to_usage_count(-1)
+ tag.save()
+
+ self.active_revision = None
+ self.save()
+
+ for n in self.children.all():
+ n.delete()
+
+ for a in self.actions.all():
+ a.cancel()
+
+ super(Node, self).delete(*args, **kwargs)
+
+ def save(self, *args, **kwargs):
+ 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.activate_revision(self.author, self.active_revision)
+ self.update_last_activity(self.author, time=self.added_at)
+
+ if self.parent_id and not self.abs_parent_id:
+ self.abs_parent = self.parent.absolute_parent
+
+ tags_changed = self._process_changes_in_tags()
+
+ super(Node, self).save(*args, **kwargs)
+ if tags_changed:
+ if self.tagnames.strip():
+ self.tags = list(Tag.objects.filter(name__in=self.tagname_list()))
+ else:
+ self.tags = []
+
+ class Meta:
+ app_label = 'forum'
+
+
+class NodeRevision(BaseModel, NodeContent):
+ node = models.ForeignKey(Node, related_name='revisions')
+ summary = models.CharField(max_length=300)
+ revision = models.PositiveIntegerField()
+ revised_at = models.DateTimeField(default=datetime.datetime.now)
+
+ class Meta:
+ unique_together = ('node', 'revision')
+ app_label = 'forum'
+
+
+class NodeState(models.Model):
+ node = models.ForeignKey(Node, related_name='states')
+ state_type = models.CharField(max_length=16)
+ action = models.OneToOneField('Action', related_name="node_state")
+
+ class Meta:
+ unique_together = ('node', 'state_type')
+ app_label = 'forum'
+
+
projects / osqa.git / blobdiff