| 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 sys |
| 18 | |
| 19 | import jinja2 |
| 20 | import mongokit |
| 21 | |
| 22 | def get_jinja_env(user_template_path=None): |
| 23 | """ |
| 24 | Set up the Jinja environment, possibly allowing for user |
| 25 | overridden templates. |
| 26 | |
| 27 | (In the future we may have another system for providing theming; |
| 28 | for now this is good enough.) |
| 29 | """ |
| 30 | if user_template_path: |
| 31 | loader = jinja2.ChoiceLoader( |
| 32 | [jinja2.FileSystemLoader(user_template_path), |
| 33 | jinja2.PackageLoader('mediagoblin', 'templates')]) |
| 34 | else: |
| 35 | loader = jinja2.PackageLoader('mediagoblin', 'templates') |
| 36 | |
| 37 | return jinja2.Environment(loader=loader, autoescape=True) |
| 38 | |
| 39 | |
| 40 | def setup_user_in_request(request): |
| 41 | """ |
| 42 | Examine a request and tack on a request.user parameter if that's |
| 43 | appropriate. |
| 44 | """ |
| 45 | if not request.session.has_key('user_id'): |
| 46 | request.user = None |
| 47 | return |
| 48 | |
| 49 | user = None |
| 50 | user = request.app.db.User.one( |
| 51 | {'_id': mongokit.ObjectId(request.session['user_id'])}) |
| 52 | |
| 53 | if not user: |
| 54 | # Something's wrong... this user doesn't exist? Invalidate |
| 55 | # this session. |
| 56 | request.session.invalidate() |
| 57 | |
| 58 | request.user = user |
| 59 | |
| 60 | |
| 61 | def import_component(import_string): |
| 62 | """ |
| 63 | Import a module component defined by STRING. Probably a method, |
| 64 | class, or global variable. |
| 65 | |
| 66 | Args: |
| 67 | - import_string: a string that defines what to import. Written |
| 68 | in the format of "module1.module2:component" |
| 69 | """ |
| 70 | module_name, func_name = import_string.split(':', 1) |
| 71 | __import__(module_name) |
| 72 | module = sys.modules[module_name] |
| 73 | func = getattr(module, func_name) |
| 74 | return func |