plone.app.discussion/plone/app/discussion/comment.py

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"""The default comment class and factory.
"""
from datetime import datetime
from zope.interface import implements
from zope.component.factory import Factory
from zope.component import queryUtility
from Acquisition import aq_parent, Implicit
from AccessControl.Role import RoleManager
from AccessControl.Owned import Owned
from Globals import Persistent
from Products.CMFCore.DynamicType import DynamicType
from Products.CMFCore.utils import getToolByName
from OFS.Traversable import Traversable
from plone.registry.interfaces import IRegistry
from plone.app.discussion.interfaces import IComment, IDiscussionSettings
try:
# Plone 4:
# Mixin CatalogAware and WorkflowAware into the Comment class
# is necessary for comments to be indexed in Plone4.
from Products.CMFCore.CMFCatalogAware import CatalogAware
from Products.CMFCore.CMFCatalogAware import WorkflowAware
except:
# Plone 3:
# Dummy imports to make Comment class happy
from OFS.Traversable import Traversable as CatalogAware
from OFS.Traversable import Traversable as WorkflowAware
class Comment(CatalogAware, WorkflowAware, DynamicType, Traversable,
RoleManager, Owned, Implicit, Persistent):
"""A comment.
This object attempts to be as lightweight as possible. We implement a
number of standard methods instead of subclassing, to have total control
over what goes into the object.
"""
implements(IComment)
meta_type = portal_type = 'Discussion Item'
__parent__ = None
comment_id = None # long
in_reply_to = None # long
title = u""
mime_type = "text/plain"
text = u""
creator = None
creation_date = None
modification_date = None
author_username = None
author_name = None
author_email = None
author_notification = None
# Note: we want to use zope.component.createObject() to instantiate
# comments as far as possible. comment_id and __parent__ are set via
# IConversation.addComment().
def __init__(self):
self.creation_date = self.modification_date = datetime.now()
@property
def __name__(self):
return self.comment_id and unicode(self.comment_id) or None
@property
def id(self):
return self.comment_id and str(self.comment_id) or None
def getId(self):
"""The id of the comment, as a string
"""
return self.id
def getText(self):
'''the text'''
return self.text
def Title(self):
"""The title of the comment
"""
return self.title
def Creator(self):
"""The name of the person who wrote the comment
"""
return self.creator
def Type(self):
"""The Discussion Item content type
"""
return self.portal_type
# CMF's event handlers assume any IDynamicType has these :(
def opaqueItems(self):
return []
def opaqueIds(self):
return []
def opaqueValues(self):
return []
CommentFactory = Factory(Comment)
def notify_workflow(obj, event):
"""Tell the workflow tool when a comment is added
"""
tool = getToolByName(obj, 'portal_workflow', None)
if tool is not None:
tool.notifyCreated(obj)
def notify_content_object(obj, event):
"""Tell the content object when a comment is added
"""
content_obj = aq_parent(aq_parent(obj))
content_obj.reindexObject(idxs=('total_comments',
'last_comment_date',
'commentators',))
def notify_user(obj, event):
"""Tell the user when a comment is added
"""
conversation = aq_parent(obj)
content_object = aq_parent(conversation)
mail_host = getToolByName(obj, 'MailHost')
portal_url = getToolByName(obj, 'portal_url')
portal = portal_url.getPortalObject()
sender = portal.getProperty('email_from_address')
if not sender:
return
for comment in conversation.getComments():
if comment.author_notification and comment.author_email:
subject = "A comment has been posted."
message = "A comment with the title '%s' has been posted here: %s" \
% (obj.title,
content_object.absolute_url(),)
mail_host.send(message, comment.author_email, sender, subject)
def notify_moderator(obj, index):
"""Tell the moderator when a comment needs attention
"""
# check if notification is enabled
registry = queryUtility(IRegistry)
settings = registry.forInterface(IDiscussionSettings)
if not settings.moderator_notification_enabled:
return
# check if comment review workflow is enabled
wf = getToolByName(obj, 'portal_workflow')
if wf.getChainForPortalType('Discussion Item') != \
('comment_review_workflow',):
return
mail_host = getToolByName(obj, 'MailHost')
portal_url = getToolByName(obj, 'portal_url')
portal = portal_url.getPortalObject()
sender = portal.getProperty('email_from_address')
mto = portal.getProperty('email_from_address')
# check if a sender address is available
if not sender:
return
conversation = aq_parent(obj)
content_object = aq_parent(conversation)
comment = conversation.getComments().next()
subject = "A comment has been posted."
message = "A comment with the title '%s' has been posted here: %s" \
% (obj.title,
content_object.absolute_url(),)
mail_host.send(message, mto, sender, subject)