views.py 文件源码

def unfollow_user(self, request):
        """Removes the current user as follower of the given user."""
        username = request.match_info['username']
        session = await get_session(request)
        user_id = session.get('user_id')
        if not user_id:
            raise web.HTTPNotAuthorized()

        whom_id = await db.get_user_id(self.mongo.user, username)
        if whom_id is None:
            raise web.HTTPFound()

        await self.mongo.follower.update(
            {'who_id': ObjectId(session['user_id'])},
            {'$pull': {'whom_id': whom_id}})
        return redirect(request, 'user_timeline', parts={"username": username})