71 lines
2.0 KiB
Python
71 lines
2.0 KiB
Python
#!/usr/bin/env python
|
|
# -*- coding: utf-8 -*-
|
|
"""
|
|
openslides.utils.person.api
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
Usefull functions for the OpenSlides person api.
|
|
|
|
:copyright: 2011, 2012 by OpenSlides team, see AUTHORS.
|
|
:license: GNU GPL, see LICENSE for more details.
|
|
"""
|
|
|
|
from openslides.utils.person.signals import receive_persons
|
|
|
|
|
|
class Persons(object):
|
|
"""
|
|
A Storage for a multiplicity of different Person-Objects.
|
|
"""
|
|
def __init__(self, person_prefix_filter=None, id_filter=None):
|
|
self.person_prefix_filter = person_prefix_filter
|
|
self.id_filter = id_filter
|
|
|
|
def __iter__(self):
|
|
try:
|
|
return iter(self._cache)
|
|
except AttributeError:
|
|
return self.iter_persons()
|
|
|
|
def __len__(self):
|
|
return len(list(self.__iter__()))
|
|
|
|
def __getitem__(self, key):
|
|
try:
|
|
return list(self)[key]
|
|
except IndexError:
|
|
from openslides.utils.person import EmptyPerson
|
|
return EmptyPerson()
|
|
|
|
def iter_persons(self):
|
|
self._cache = list()
|
|
for receiver, persons in receive_persons.send(
|
|
sender='persons', person_prefix_filter=self.person_prefix_filter, id_filter=self.id_filter):
|
|
for person in persons:
|
|
self._cache.append(person)
|
|
yield person
|
|
|
|
|
|
def generate_person_id(prefix, id):
|
|
assert prefix is not None
|
|
assert id is not None
|
|
if ':' in prefix:
|
|
raise ValueError("':' is not allowed in a the 'person_prefix'")
|
|
return "%s:%d" % (prefix, id)
|
|
|
|
|
|
def split_person_id(person_id):
|
|
data = person_id.split(':', 1)
|
|
if len(data) == 2 and data[0] and data[1]:
|
|
return data
|
|
raise TypeError("Invalid person_id: '%s'" % person_id)
|
|
|
|
|
|
def get_person(person_id):
|
|
try:
|
|
person_prefix, id = split_person_id(person_id)
|
|
except TypeError:
|
|
from openslides.utils.person import EmptyPerson
|
|
return EmptyPerson()
|
|
return Persons(person_prefix_filter=person_prefix, id_filter=id)[0]
|