Add explicit access_types from the url
This does two things, it reduces the amount of repeated data (e.g.,
the checkAccess used to repeat the access_type that was already
specified in the url). At the same time, it allows for example the
'create' page to push its access_type to 'edit'.
Patch by: Sverre Rabbelier
from os.path import join, normcase, abspath, sep
from django.utils.encoding import force_unicode
def safe_join(base, *paths):
"""
Joins one or more path components to the base path component intelligently.
Returns a normalized, absolute version of the final path.
The final path must be located inside of the base path component (otherwise
a ValueError is raised).
"""
# We need to use normcase to ensure we don't false-negative on case
# insensitive operating systems (like Windows).
base = force_unicode(base)
paths = [force_unicode(p) for p in paths]
final_path = normcase(abspath(join(base, *paths)))
base_path = normcase(abspath(base))
base_path_len = len(base_path)
# Ensure final_path starts with base_path and that the next character after
# the final path is os.sep (or nothing, in which case final_path must be
# equal to base_path).
if not final_path.startswith(base_path) \
or final_path[base_path_len:base_path_len+1] not in ('', sep):
raise ValueError('the joined path is located outside of the base path'
' component')
return final_path