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# GNU MediaGoblin -- federated, autonomous media hosting
# Copyright (C) 2011, 2012 MediaGoblin contributors. See AUTHORS.
#
# 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/>.
from math import ceil
import jinja2
from babel.localedata import exists
from werkzeug.urls import url_quote_plus
from mediagoblin import mg_globals
from mediagoblin import messages
from mediagoblin.tools import common
from mediagoblin.tools.translate import get_gettext_translation
from mediagoblin.tools.pluginapi import get_hook_templates
from mediagoblin.meddleware.csrf import render_csrf_form_token
SETUP_JINJA_ENVS = {}
def get_jinja_env(template_loader, locale):
"""
Set up the Jinja environment,
(In the future we may have another system for providing theming;
for now this is good enough.)
"""
mg_globals.thread_scope.translations = get_gettext_translation(locale)
# If we have a jinja environment set up with this locale, just
# return that one.
if locale in SETUP_JINJA_ENVS:
return SETUP_JINJA_ENVS[locale]
# jinja2.StrictUndefined will give exceptions on references
# to undefined/unknown variables in templates.
template_env = jinja2.Environment(
loader=template_loader, autoescape=True,
undefined=jinja2.StrictUndefined,
extensions=['jinja2.ext.i18n', 'jinja2.ext.autoescape'])
template_env.install_gettext_callables(
mg_globals.thread_scope.translations.ugettext,
mg_globals.thread_scope.translations.ungettext)
# All templates will know how to ...
# ... fetch all waiting messages and remove them from the queue
# ... construct a grid of thumbnails or other media
# ... have access to the global and app config
template_env.globals['fetch_messages'] = messages.fetch_messages
template_env.globals['app_config'] = mg_globals.app_config
template_env.globals['global_config'] = mg_globals.global_config
template_env.filters['urlencode'] = url_quote_plus
# allow for hooking up plugin templates
template_env.globals['get_hook_templates'] = get_hook_templates
if exists(locale):
SETUP_JINJA_ENVS[locale] = template_env
return template_env
# We'll store context information here when doing unit tests
TEMPLATE_TEST_CONTEXT = {}
def render_template(request, template_path, context):
"""
Render a template with context.
Always inserts the request into the context, so you don't have to.
Also stores the context if we're doing unit tests. Helpful!
"""
template = request.template_env.get_template(
template_path)
context['request'] = request
rendered_csrf_token = render_csrf_form_token(request)
if rendered_csrf_token is not None:
context['csrf_token'] = render_csrf_form_token(request)
rendered = template.render(context)
if common.TESTS_ENABLED:
TEMPLATE_TEST_CONTEXT[template_path] = context
return rendered
def clear_test_template_context():
global TEMPLATE_TEST_CONTEXT
TEMPLATE_TEST_CONTEXT = {}
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