#!/usr/bin/python
# -*- coding: utf-8 -*-
"""Contains the model for metadata transaction user."""
import uuid
from peewee import ForeignKeyField, UUIDField
from ..rest.orm import CherryPyAPI
from .users import Users
from .relationships import Relationships
from .transactions import Transactions
from .base import DB
[docs]class TransactionUser(CherryPyAPI):
"""
TransactionUser model class for transaction user relationships.
Attributes:
+-------------------+-----------------------------------------------+
| Name | Description |
+===================+===============================================+
| uuid | uuid for the relationship |
+-------------------+-----------------------------------------------+
| transaction | transaction to be acted upon |
+-------------------+-----------------------------------------------+
| relationship | relationship to transaction |
+-------------------+-----------------------------------------------+
| user | user reference |
+-------------------+-----------------------------------------------+
"""
uuid = UUIDField(primary_key=True, default=uuid.uuid4, index=True)
user = ForeignKeyField(Users, backref='transactions')
transaction = ForeignKeyField(Transactions, backref='users')
relationship = ForeignKeyField(Relationships, backref='transaction_user')
# pylint: disable=too-few-public-methods
class Meta(object):
"""PeeWee meta class contains the database and the primary key."""
database = DB
indexes = (
(('user', 'transaction', 'relationship'), True),
)
# pylint: enable=too-few-public-methods
[docs] def to_hash(self, **flags):
"""Convert the object to a hash."""
obj = super(TransactionUser, self).to_hash(**flags)
obj['uuid'] = str(self.__data__['uuid'])
obj['relationship'] = str(self.__data__['relationship'])
obj['transaction'] = int(self.__data__['transaction'])
obj['user'] = int(self.__data__['user'])
return obj
[docs] def from_hash(self, obj):
"""Convert the hash to the object."""
super(TransactionUser, self).from_hash(obj)
self._set_only_if('uuid', obj, 'uuid',
lambda: uuid.UUID(obj['uuid']))
self._set_only_if_by_name('relationship', obj, Relationships)
self._set_only_if('transaction', obj, 'transaction',
lambda: Transactions.get(Transactions.id == obj['transaction']))
self._set_only_if('user', obj, 'user',
lambda: Users.get(Users.id == obj['user']))
[docs] @classmethod
def where_clause(cls, kwargs):
"""PeeWee specific where clause used for search."""
where_clause = super(TransactionUser, cls).where_clause(kwargs)
return cls._where_attr_clause(where_clause, kwargs, ['uuid', 'user', 'relationship', 'transaction'])