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# Copyright 2011 Canonical Ltd. This software is licensed under the
# GNU Affero General Public License version 3 (see the file LICENSE).
"""Views for QuestionSubscription."""
__metaclass__ = type
__all__ = [
'QuestionPortletSubscribersWithDetails',
]
from lazr.delegates import delegates
from lazr.restful.interfaces import IWebServiceClientRequest
from simplejson import dumps
from zope.traversing.browser import absoluteURL
from lp.services.webapp import (
canonical_url,
LaunchpadView,
)
from lp.answers.interfaces.question import IQuestion
from lp.answers.interfaces.questionsubscription import IQuestionSubscription
from lp.services.propertycache import cachedproperty
class QuestionPortletSubscribersWithDetails(LaunchpadView):
"""View that returns a JSON dump of subscriber details for a question."""
@cachedproperty
def api_request(self):
return IWebServiceClientRequest(self.request)
def direct_subscriber_data(self, question):
"""Get the direct subscriber data.
This method is isolated from the subscriber_data_js so that query
count testing can be done accurately and robustly.
"""
data = []
details = list(question.getDirectSubscribersWithDetails())
for person, subscription in details:
can_edit = subscription.canBeUnsubscribedByUser(self.user)
if person.private and not can_edit:
# Skip private teams user is not a member of.
continue
subscriber = {
'name': person.name,
'display_name': person.displayname,
'web_link': canonical_url(person, rootsite='mainsite'),
'self_link': absoluteURL(person, self.api_request),
'is_team': person.is_team,
'can_edit': can_edit
}
record = {
'subscriber': subscriber,
'subscription_level': 'Direct',
}
data.append(record)
return data
@property
def subscriber_data_js(self):
"""Return subscriber_ids in a form suitable for JavaScript use."""
question = IQuestion(self.context)
data = self.direct_subscriber_data(question)
others = question.getIndirectSubscribers()
for person in others:
if person == self.user:
# Skip the current user viewing the page.
continue
subscriber = {
'name': person.name,
'display_name': person.displayname,
'web_link': canonical_url(person, rootsite='mainsite'),
'self_link': absoluteURL(person, self.api_request),
'is_team': person.is_team,
'can_edit': False,
}
record = {
'subscriber': subscriber,
'subscription_level': 'Indirect',
}
data.append(record)
return dumps(data)
def render(self):
"""Override the default render() to return only JSON."""
self.request.response.setHeader('content-type', 'application/json')
return self.subscriber_data_js
class SubscriptionAttrDecorator:
"""A QuestionSubscription with added attributes for HTML/JS."""
delegates(IQuestionSubscription, 'subscription')
def __init__(self, subscription):
self.subscription = subscription
@property
def css_name(self):
return 'subscriber-%s' % self.subscription.person.id
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