--- a/sobjects/notification.py Thu Apr 25 14:10:55 2013 +0200
+++ b/sobjects/notification.py Thu Apr 25 13:34:48 2013 +0200
@@ -26,9 +26,10 @@
from logilab.common.deprecation import class_renamed, class_moved, deprecated
from logilab.common.registry import yes
-from cubicweb.view import Component
-from cubicweb.mail import NotificationView as BaseNotificationView, SkipEmail
+from cubicweb.entity import Entity
+from cubicweb.view import Component, EntityView
from cubicweb.server.hook import SendMailOp
+from cubicweb.mail import construct_message_id, format_mail
class RecipientsFinder(Component):
@@ -59,6 +60,146 @@
# abstract or deactivated notification views and mixin ########################
+
+class SkipEmail(Exception):
+ """raise this if you decide to skip an email during its generation"""
+
+
+class BaseNotificationView(EntityView):
+ """abstract view implementing the "email" API (eg to simplify sending
+ notification)
+ """
+ __abstract__ = True
+
+ # XXX refactor this class to work with len(rset) > 1
+
+ msgid_timestamp = True
+
+ # to be defined on concrete sub-classes
+ content = None # body of the mail
+ message = None # action verb of the subject
+
+ # this is usually the method to call
+ def render_and_send(self, **kwargs):
+ """generate and send an email message for this view"""
+ delayed = kwargs.pop('delay_to_commit', None)
+ for recipients, msg in self.render_emails(**kwargs):
+ if delayed is None:
+ self.send(recipients, msg)
+ elif delayed:
+ self.send_on_commit(recipients, msg)
+ else:
+ self.send_now(recipients, msg)
+
+ def cell_call(self, row, col=0, **kwargs):
+ self.w(self._cw._(self.content) % self.context(**kwargs))
+
+ def render_emails(self, **kwargs):
+ """generate and send emails for this view (one per recipient)"""
+ self._kwargs = kwargs
+ recipients = self.recipients()
+ if not recipients:
+ self.info('skipping %s notification, no recipients', self.__regid__)
+ return
+ if self.cw_rset is not None:
+ entity = self.cw_rset.get_entity(self.cw_row or 0, self.cw_col or 0)
+ # if the view is using timestamp in message ids, no way to reference
+ # previous email
+ if not self.msgid_timestamp:
+ refs = [self.construct_message_id(eid)
+ for eid in entity.cw_adapt_to('INotifiable').notification_references(self)]
+ else:
+ refs = ()
+ msgid = self.construct_message_id(entity.eid)
+ else:
+ refs = ()
+ msgid = None
+ req = self._cw
+ self.user_data = req.user_data()
+ origlang = req.lang
+ for something in recipients:
+ if isinstance(something, Entity):
+ # hi-jack self._cw to get a session for the returned user
+ self._cw = self._cw.hijack_user(something)
+ emailaddr = something.cw_adapt_to('IEmailable').get_email()
+ else:
+ emailaddr, lang = something
+ self._cw.set_language(lang)
+ # since the same view (eg self) may be called multiple time and we
+ # need a fresh stream at each iteration, reset it explicitly
+ self.w = None
+ # XXX call render before subject to set .row/.col attributes on the
+ # view
+ try:
+ content = self.render(row=0, col=0, **kwargs)
+ subject = self.subject()
+ except SkipEmail:
+ continue
+ except Exception as ex:
+ # shouldn't make the whole transaction fail because of rendering
+ # error (unauthorized or such) XXX check it doesn't actually
+ # occurs due to rollback on such error
+ self.exception(str(ex))
+ continue
+ msg = format_mail(self.user_data, [emailaddr], content, subject,
+ config=self._cw.vreg.config, msgid=msgid, references=refs)
+ yield [emailaddr], msg
+ # restore language
+ req.set_language(origlang)
+
+ # recipients / email sending ###############################################
+
+ def recipients(self):
+ """return a list of either 2-uple (email, language) or user entity to
+ who this email should be sent
+ """
+ finder = self._cw.vreg['components'].select(
+ 'recipients_finder', self._cw, rset=self.cw_rset,
+ row=self.cw_row or 0, col=self.cw_col or 0)
+ return finder.recipients()
+
+ def send_now(self, recipients, msg):
+ self._cw.vreg.config.sendmails([(msg, recipients)])
+
+ def send_on_commit(self, recipients, msg):
+ raise NotImplementedError
+
+ send = send_now
+
+ # email generation helpers #################################################
+
+ def construct_message_id(self, eid):
+ return construct_message_id(self._cw.vreg.config.appid, eid,
+ self.msgid_timestamp)
+
+ def format_field(self, attr, value):
+ return ':%(attr)s: %(value)s' % {'attr': attr, 'value': value}
+
+ def format_section(self, attr, value):
+ return '%(attr)s\n%(ul)s\n%(value)s\n' % {
+ 'attr': attr, 'ul': '-'*len(attr), 'value': value}
+
+ def subject(self):
+ entity = self.cw_rset.get_entity(self.cw_row or 0, self.cw_col or 0)
+ subject = self._cw._(self.message)
+ etype = entity.dc_type()
+ eid = entity.eid
+ login = self.user_data['login']
+ return self._cw._('%(subject)s %(etype)s #%(eid)s (%(login)s)') % locals()
+
+ def context(self, **kwargs):
+ entity = self.cw_rset.get_entity(self.cw_row or 0, self.cw_col or 0)
+ for key, val in kwargs.iteritems():
+ if val and isinstance(val, unicode) and val.strip():
+ kwargs[key] = self._cw._(val)
+ kwargs.update({'user': self.user_data['login'],
+ 'eid': entity.eid,
+ 'etype': entity.dc_type(),
+ 'url': entity.absolute_url(),
+ 'title': entity.dc_long_title(),})
+ return kwargs
+
+
class NotificationView(BaseNotificationView):
"""overriden to delay actual sending of mails to a commit operation by
default