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# GNU MediaGoblin -- federated, autonomous media hosting
# Copyright (C) 2011 Free Software Foundation, Inc
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import sys
import jinja2
import mongokit
def get_jinja_env(user_template_path=None):
"""
Set up the Jinja environment, possibly allowing for user
overridden templates.
(In the future we may have another system for providing theming;
for now this is good enough.)
"""
if user_template_path:
loader = jinja2.ChoiceLoader(
[jinja2.FileSystemLoader(user_template_path),
jinja2.PackageLoader('mediagoblin', 'templates')])
else:
loader = jinja2.PackageLoader('mediagoblin', 'templates')
return jinja2.Environment(loader=loader, autoescape=True)
def setup_user_in_request(request):
"""
Examine a request and tack on a request.user parameter if that's
appropriate.
"""
if not request.session.has_key('user_id'):
request.user = None
return
user = None
user = request.db.User.one(
{'_id': mongokit.ObjectId(request.session['user_id'])})
if not user:
# Something's wrong... this user doesn't exist? Invalidate
# this session.
request.session.invalidate()
request.user = user
def import_component(import_string):
"""
Import a module component defined by STRING. Probably a method,
class, or global variable.
Args:
- import_string: a string that defines what to import. Written
in the format of "module1.module2:component"
"""
module_name, func_name = import_string.split(':', 1)
__import__(module_name)
module = sys.modules[module_name]
func = getattr(module, func_name)
return func
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