#!/usr/bin/python
# -*- coding: utf-8 -*-
"""UserGroup links Groups and Users and objects."""
from peewee import ForeignKeyField, CompositeKey
from .utils import index_hash
from .base import DB
from ..rest.orm import CherryPyAPI
from .groups import Groups
from .users import Users
[docs]class UserGroup(CherryPyAPI):
"""
UserGroup attributes are foreign keys.
Attributes:
+-------------------+-------------------------------------+
| Name | Description |
+===================+=====================================+
| person | Link to the Users model |
+-------------------+-------------------------------------+
| group | Link to the Groups model |
+-------------------+-------------------------------------+
"""
person = ForeignKeyField(Users, backref='groups')
group = ForeignKeyField(Groups, backref='members')
# pylint: disable=too-few-public-methods
class Meta(object):
"""PeeWee meta class contains the database and the primary key."""
database = DB
primary_key = CompositeKey('person', 'group')
# pylint: enable=too-few-public-methods
[docs] def to_hash(self, **flags):
"""Convert the object to a hash."""
obj = super(UserGroup, self).to_hash(**flags)
obj['_id'] = index_hash(
int(self.__data__['person']), int(self.__data__['group']))
obj['person'] = int(self.__data__['person'])
obj['group'] = int(self.__data__['group'])
return obj
[docs] def from_hash(self, obj):
"""Convert the hash into the object."""
super(UserGroup, self).from_hash(obj)
self._set_only_if(
'person', obj, 'person',
lambda: Users.get(Users.id == obj['person'])
)
self._set_only_if(
'group', obj, 'group',
lambda: Groups.get(Groups.id == obj['group'])
)
[docs] @classmethod
def where_clause(cls, kwargs):
"""Where clause for the various elements."""
where_clause = super(UserGroup, cls).where_clause(kwargs)
attrs = ['person', 'group']
return cls._where_attr_clause(where_clause, kwargs, attrs)