OpenSlides/openslides/utils/utils.py

86 lines
2.5 KiB
Python

# -*- coding: utf-8 -*-
import difflib
import roman
from django.contrib.auth.models import Permission
from django.shortcuts import render_to_response
from django.template import RequestContext
from .signals import template_manipulation
def template(template_name):
"""
Decorator to set a template for a view.
Deprecated. Use class based views instead.
"""
# TODO: Write the login page an the usersettings page with class based views
# Remove this function afterwards
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 delete_default_permissions(**kwargs):
"""
Deletes the permissions, django creates by default for the admin.
"""
# TODO: Create an participant app which does not create the permissions.
# Delete this function afterwards
for p in Permission.objects.all():
if (p.codename.startswith('add') or
p.codename.startswith('delete') or
p.codename.startswith('change')):
p.delete()
def html_strong(string):
"""
Returns the text wrapped in an HTML-Strong element.
"""
return u"<strong>%s</strong>" % string
def htmldiff(text1, text2):
"""
Return string of html diff between two strings (text1 and text2)
"""
diff = difflib.HtmlDiff(wrapcolumn=60)
return diff.make_table(text1.splitlines(), text2.splitlines())
def int_or_none(var):
"""
Trys to convert 'var' into an integer. Returns None if an TypeError occures.
"""
try:
return int(var)
except (TypeError, ValueError):
return None
def to_roman(number):
"""
Converts an arabic number within range from 1 to 4999 to the corresponding roman number.
Returns None on error conditions.
"""
try:
return roman.toRoman(number)
except (roman.NotIntegerError, roman.OutOfRangeError):
return None