mediagoblin/util.py

   1 # GNU Mediagoblin -- federated, autonomous media hosting
   2 # Copyright (C) 2011 Free Software Foundation, Inc
   3 #
   4 # This program is free software: you can redistribute it and/or modify
   5 # it under the terms of the GNU Affero General Public License as published by
   6 # the Free Software Foundation, either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU Affero General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU Affero General Public License
  15 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 import jinja2
  18 import mongokit
  19
  20 def get_jinja_env(user_template_path=None):
  21     if user_template_path:
  22         loader = jinja2.ChoiceLoader(
  23             [jinja2.FileSystemLoader(user_template_path),
  24              jinja2.PackageLoader('mediagoblin', 'templates')])
  25     else:
  26         loader = jinja2.PackageLoader('mediagoblin', 'templates')
  27
  28     return jinja2.Environment(loader=loader, autoescape=True)
  29
  30
  31 def setup_user_in_request(request):
  32     """
  33     Examine a request and tack on a request.user parameter if that's
  34     appropriate.
  35     """
  36     if not request.session.has_key('user_id'):
  37         request.user = None
  38         return
  39
  40     user = None
  41     user = request.db.User.one(
  42         {'_id': mongokit.ObjectId(request.session['user_id'])})
  43
  44     if not user:
  45         # Something's wrong... this user doesn't exist?  Invalidate
  46         # this session.
  47         request.session.invalidate()
  48
  49     request.user = user