OpenSlides/openslides/utils/person/models.py
Oskar Hahn d937262d28 Use flake8 instead of pep8. Orderd the imports with isort
* changed the fab-command pep8 to check
* checked and fixed any code with flake8. Also the urls.py
* checkt the projector app with pylint
2013-10-14 18:43:12 +02:00

91 lines
2.7 KiB
Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
openslides.utils.person.models
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Models and ModelFields for the OpenSlides person api.
:copyright: 2011, 2012 by OpenSlides team, see AUTHORS.
:license: GNU GPL, see LICENSE for more details.
"""
from django.contrib.auth.models import AnonymousUser
from django.db import models
from openslides.utils.exceptions import OpenSlidesError
from .api import generate_person_id, get_person
from .forms import PersonFormField
class PersonField(models.fields.Field):
__metaclass__ = models.SubfieldBase
def __init__(self, *args, **kwargs):
kwargs['max_length'] = 255
super(PersonField, self).__init__(*args, **kwargs)
def get_internal_type(self):
return "CharField"
def to_python(self, value):
"""
Convert an object to an user Object.
'value' has to be an object derivated from PersonMixin, None or has to
have an attribute 'person_id'.
"""
if isinstance(value, PersonMixin):
return value
elif value is None:
return None
elif isinstance(value, AnonymousUser):
raise AttributeError('An AnonymousUser can not be saved into the database.')
else:
try:
return get_person(value)
except AttributeError:
raise AttributeError('You can not save \'%s\' into a person field.'
% type(value))
def get_prep_value(self, value):
"""
Convert a person object to a string, to store it in the database.
"""
if value is None:
# For Fields with null=True
return None
elif isinstance(value, basestring):
# The object is already a a person_id
return value
elif hasattr(value, 'person_id'):
# The object is a person
return value.person_id
else:
OpenSlidesError('%s (%s) is no person' % (value, type(value)))
def formfield(self, **kwargs):
defaults = {'form_class': PersonFormField}
defaults.update(kwargs)
return super(PersonField, self).formfield(**defaults)
class PersonMixin(object):
@property
def person_id(self):
try:
return generate_person_id(self.person_prefix, self.pk)
except AttributeError:
raise AttributeError("%s has to have a attribute 'person_prefix'"
% self)
def __unicode__(self):
return self.person_id
def prepare_database_save(self, field):
if type(field) is PersonField:
return self.person_id
else:
return super(PersonMixin, self).prepare_database_save(field)