getListContentForData function added to lists helper.
It allows to manually set a list of entities which is to be displayed on the view. Previously, the only function was getListContent, but it retrived data on its own by a single query. The new function can be useful whenever it is impossible or very awkward to obtain entities in such a way (for example more sophisticated SQL statements).
Additionally, the getListContent function is reconstructed so that it collects the data first and then calls getListContentForData.
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