OpenSlides/openslides/utils/utils.py
2012-07-23 23:06:36 +02:00

160 lines
4.4 KiB
Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
openslides.utils.urls
~~~~~~~~~~~~~~~~~~~~~
URL functions for OpenSlides.
:copyright: 2011, 2012 by OpenSlides team, see AUTHORS.
:license: GNU GPL, see LICENSE for more details.
"""
try:
import json
except ImportError: # For python 2.5 support
import simplejson as json
from django.conf import settings
from django.contrib import messages
from django.contrib.auth.models import Permission
from django.core.context_processors import csrf
from django.core.urlresolvers import reverse
from django.http import HttpResponse, HttpResponseForbidden
from django.shortcuts import render_to_response, redirect
from django.template import RequestContext
from django.template.loader import render_to_string
from django.utils.translation import ugettext as _, ugettext_lazy
from openslides.utils.signals import template_manipulation
from openslides import get_version
def revision(request):
return {'openslides_version': get_version()}
def gen_confirm_form(request, message, url):
"""
Generate a message-form.
Deprecated. Use Class base Views instead.
"""
messages.warning(request,
"""
%s
<form action="%s" method="post">
<input type="hidden" value="%s" name="csrfmiddlewaretoken">
<input type="submit" value="%s">
<input type="button" value="%s">
</form>
"""
% (message, url, csrf(request)['csrf_token'], _("Yes"), _("No")))
def del_confirm_form(request, object, name=None, delete_link=None):
"""
Creates a question to delete an object.
Deprecated. Use Class base Views instead.
"""
if name is None:
name = object
if delete_link is None:
delete_link = object.get_absolute_url('delete')
gen_confirm_form(request, _('Do you really want to delete %s?')
% html_strong(name), delete_link)
def render_response(req, *args, **kwargs):
kwargs['context_instance'] = RequestContext(req)
return render_to_response(*args, **kwargs)
def template(template_name):
def renderer(func):
def wrapper(request, *args, **kwargs):
output = func(request, *args, **kwargs)
if not isinstance(output, dict):
return output
context = {}
template_manipulation.send(sender='utils_template', request=request,
context=context)
output.update(context)
response = render_to_response(template_name, output,
context_instance=RequestContext(request))
if 'cookie' in output:
response.set_cookie(output['cookie'][0], output['cookie'][1])
return response
return wrapper
return renderer
def permission_required(perm, login_url=None):
"""
Decorator for views that checks whether a user has a particular permission
enabled, redirecting to the log-in page if necessary.
"""
def renderer(func):
def wrapper(request, *args, **kw):
if request.user.has_perm(perm):
return func(request, *args, **kw)
if request.user.is_authenticated():
return render_to_forbitten(request)
return redirect(reverse('user_login'))
return wrapper
return renderer
def render_to_forbitten(request, error=
ugettext_lazy("Sorry, you have no rights to see this page.")):
return HttpResponseForbidden(render_to_string('403.html',
{'error': error}, context_instance=RequestContext(request)))
def delete_default_permissions(**kwargs):
"""
Deletes the permissions, django creates by default for the admin.
"""
for p in Permission.objects.all():
if p.codename.startswith('add') \
or p.codename.startswith('delete') \
or p.codename.startswith('change'):
p.delete()
def ajax_request(data):
"""
generates a HTTPResponse-Object with json-Data for a
ajax response
"""
return HttpResponse(json.dumps(data))
def _propper_unicode(text):
res = ''
if not isinstance(text, unicode):
res = u"%s" % text.decode('UTF-8')
else:
res = text
return res
def decodedict(dict):
newdict = {}
for key in dict:
newdict[key] = [dict[key][0].encode('utf-8')]
return newdict
def encodedict(dict):
newdict = {}
for key in dict:
newdict[key] = [unicode(dict[key][0].decode('utf-8'))]
return newdict
def html_strong(string):
return u"<strong>%s</strong>" % string