330 lines
10 KiB
Python
330 lines
10 KiB
Python
# -*- coding: utf-8 -*-
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"""The default comment class and factory.
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"""
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import logging
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from datetime import datetime
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from smtplib import SMTPException
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from zope.annotation.interfaces import IAnnotatable
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from zope.component.factory import Factory
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from zope.component import queryUtility
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from zope.i18n import translate
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from zope.i18nmessageid import Message
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from zope.interface import implements
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from Acquisition import aq_parent, aq_base, Implicit
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from OFS.owner import Owned
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from persistent import Persistent
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from Products.CMFCore.DynamicType import DynamicType
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from Products.CMFCore.utils import getToolByName
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from Products.CMFPlone.utils import safe_unicode
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from OFS.Traversable import Traversable
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from plone.registry.interfaces import IRegistry
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from plone.app.discussion import PloneAppDiscussionMessageFactory as _
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from plone.app.discussion.interfaces import IComment
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from plone.app.discussion.interfaces import IConversation
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from plone.app.discussion.interfaces import IDiscussionSettings
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from Products.CMFCore.CMFCatalogAware import CatalogAware
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from Products.CMFCore.CMFCatalogAware import WorkflowAware
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try:
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from OFS.role import RoleManager
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except ImportError:
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# Zope <=2.12
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from AccessControl.Role import RoleManager
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COMMENT_TITLE = _(u"comment_title",
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default=u"${creator} on ${content}")
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MAIL_NOTIFICATION_MESSAGE = _(u"mail_notification_message",
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default=u"A comment on '${title}' "
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"has been posted here: ${link}")
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logger = logging.getLogger("plone.app.discussion")
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class Comment(CatalogAware, WorkflowAware, DynamicType, Traversable,
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RoleManager, Owned, Implicit, Persistent):
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"""A comment.
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This object attempts to be as lightweight as possible. We implement a
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number of standard methods instead of subclassing, to have total control
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over what goes into the object.
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"""
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implements(IComment)
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meta_type = portal_type = 'Discussion Item'
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# This needs to be kept in sync with types/Discussion_Item.xml title
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fti_title = 'Comment'
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__parent__ = None
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comment_id = None # long
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in_reply_to = None # long
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title = u""
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mime_type = None
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text = u""
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creator = None
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creation_date = None
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modification_date = None
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author_username = None
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author_name = None
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author_email = None
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user_notification = None
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# Note: we want to use zope.component.createObject() to instantiate
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# comments as far as possible. comment_id and __parent__ are set via
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# IConversation.addComment().
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def __init__(self):
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self.creation_date = self.modification_date = datetime.utcnow()
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@property
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def __name__(self):
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return self.comment_id and unicode(self.comment_id) or None
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@property
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def id(self):
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return self.comment_id and str(self.comment_id) or None
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def getId(self):
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"""The id of the comment, as a string.
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"""
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return self.id
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def getText(self, targetMimetype=None):
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"""The body text of a comment.
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"""
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transforms = getToolByName(self, 'portal_transforms')
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if targetMimetype is None:
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targetMimetype = 'text/x-html-safe'
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sourceMimetype = getattr(self, 'mime_type', None)
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if sourceMimetype is None:
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registry = queryUtility(IRegistry)
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settings = registry.forInterface(IDiscussionSettings, check=False)
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sourceMimetype = settings.text_transform
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text = self.text
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if isinstance(text, unicode):
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text = text.encode('utf8')
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return transforms.convertTo(targetMimetype,
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text,
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context=self,
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mimetype=sourceMimetype).getData()
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def Title(self):
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"""The title of the comment.
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"""
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if self.title:
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return self.title
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if not self.creator:
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creator = translate(Message(_(u"label_anonymous",
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default=u"Anonymous")))
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else:
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creator = self.creator
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creator = creator
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# Fetch the content object (the parent of the comment is the
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# conversation, the parent of the conversation is the content object).
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content = aq_base(self.__parent__.__parent__)
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title = translate(
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Message(COMMENT_TITLE,
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mapping={'creator': creator,
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'content': safe_unicode(content.Title())}))
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return title
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def Creator(self):
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"""The name of the person who wrote the comment.
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"""
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return self.creator
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def Type(self):
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"""The Discussion Item content type.
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"""
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return self.fti_title
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# CMF's event handlers assume any IDynamicType has these :(
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def opaqueItems(self): # pragma: no cover
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return []
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def opaqueIds(self): # pragma: no cover
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return []
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def opaqueValues(self): # pragma: no cover
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return []
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CommentFactory = Factory(Comment)
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def notify_workflow(obj, event):
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"""Tell the workflow tool when a comment is added
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"""
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tool = getToolByName(obj, 'portal_workflow', None)
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if tool is not None:
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tool.notifyCreated(obj)
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def notify_content_object(obj, event):
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"""Tell the content object when a comment is added
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"""
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content_obj = aq_parent(aq_parent(obj))
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content_obj.reindexObject(idxs=('total_comments',
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'last_comment_date',
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'commentators',))
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def notify_content_object_deleted(obj, event):
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"""Remove all comments of a content object when the content object has been
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deleted.
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"""
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if IAnnotatable.providedBy(obj):
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conversation = IConversation(obj)
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while conversation:
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del conversation[conversation.keys()[0]]
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def notify_user(obj, event):
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"""Tell users when a comment has been added.
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This method composes and sends emails to all users that have added a
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comment to this conversation and enabled user notification.
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This requires the user_notification setting to be enabled in the
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discussion control panel.
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"""
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# Check if user notification is enabled
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registry = queryUtility(IRegistry)
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settings = registry.forInterface(IDiscussionSettings, check=False)
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if not settings.user_notification_enabled:
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return
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# Get informations that are necessary to send an email
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mail_host = getToolByName(obj, 'MailHost')
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portal_url = getToolByName(obj, 'portal_url')
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portal = portal_url.getPortalObject()
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sender = portal.getProperty('email_from_address')
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# Check if a sender address is available
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if not sender:
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return
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# Compose and send emails to all users that have add a comment to this
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# conversation and enabled user_notification.
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conversation = aq_parent(obj)
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content_object = aq_parent(conversation)
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# Avoid sending multiple notification emails to the same person
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# when he has commented multiple times.
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emails = set()
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for comment in conversation.getComments():
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if (obj != comment and
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comment.user_notification and comment.author_email):
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emails.add(comment.author_email)
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if not emails:
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return
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subject = translate(_(u"A comment has been posted."),
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context=obj.REQUEST)
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message = translate(Message(
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MAIL_NOTIFICATION_MESSAGE,
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mapping={'title': safe_unicode(content_object.title),
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'link': obj.absolute_url()}),
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context=obj.REQUEST)
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for email in emails:
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# Send email
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try:
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mail_host.send(message,
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email,
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sender,
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subject,
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charset='utf-8')
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except SMTPException:
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logger.error('SMTP exception while trying to send an ' +
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'email from %s to %s',
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sender,
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email)
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def notify_moderator(obj, event):
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"""Tell the moderator when a comment needs attention.
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This method sends an email to the moderator if comment moderation is
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enabled and a new comment has been added that needs to be approved.
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Configure the moderator e-mail address in the discussion control panel.
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If no moderator is configured but moderator notifications are turned on,
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the site admin email (from the mail control panel) will be used.
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This requires the moderator_notification to be enabled in the discussion
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control panel and the comment_review_workflow enabled for the comment
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content type.
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"""
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# Check if moderator notification is enabled
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registry = queryUtility(IRegistry)
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settings = registry.forInterface(IDiscussionSettings, check=False)
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if not settings.moderator_notification_enabled:
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return
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# Get informations that are necessary to send an email
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mail_host = getToolByName(obj, 'MailHost')
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portal_url = getToolByName(obj, 'portal_url')
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portal = portal_url.getPortalObject()
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sender = portal.getProperty('email_from_address')
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if settings.moderator_email:
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mto = settings.moderator_email
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else:
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mto = sender
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# Check if a sender address is available
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if not sender:
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return
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conversation = aq_parent(obj)
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content_object = aq_parent(conversation)
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# Compose email
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#comment = conversation.getComments().next()
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subject = translate(_(u"A comment has been posted."), context=obj.REQUEST)
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message = translate(Message(MAIL_NOTIFICATION_MESSAGE,
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mapping={'title': safe_unicode(content_object.title),
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'link': obj.absolute_url()}),
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context=obj.REQUEST)
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# Send email
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try:
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mail_host.send(message, mto, sender, subject, charset='utf-8')
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except SMTPException, e:
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logger.error('SMTP exception (%s) while trying to send an ' +
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'email notification to the comment moderator ' +
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'(from %s to %s, message: %s)',
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e,
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sender,
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mto,
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message)
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