63 lines
2 KiB
Python
63 lines
2 KiB
Python
# -*- coding: utf-8 -*-
|
|
# This file is part of the cashbook-module from m-ds for Tryton.
|
|
# The COPYRIGHT file at the top level of this repository contains the
|
|
# full copyright notices and license terms.
|
|
|
|
from trytond.model import fields
|
|
from trytond.transaction import Transaction
|
|
from trytond.pool import Pool, PoolMeta
|
|
from sql.aggregate import Count
|
|
from sql.conditionals import Case
|
|
|
|
|
|
class Currency(metaclass=PoolMeta):
|
|
__name__ = 'currency.currency'
|
|
|
|
cashbook_hasbookings = fields.Function(fields.Boolean(
|
|
string='Has Bookings', readonly=True),
|
|
'on_change_with_cashbook_hasbookings',
|
|
searcher='search_cashbook_hasbookings')
|
|
|
|
@fields.depends('id')
|
|
def on_change_with_cashbook_hasbookings(self, name=None):
|
|
""" result: True if there are bookings
|
|
"""
|
|
Lines = Pool().get('cashbook.line')
|
|
|
|
with Transaction().set_context({
|
|
'_check_access': True}):
|
|
if Lines.search_count([
|
|
('cashbook.currency.id', '=', self.id)]) > 0:
|
|
return True
|
|
return False
|
|
|
|
@classmethod
|
|
def search_cashbook_hasbookings(cls, name, clause):
|
|
""" indicate existing bookings
|
|
"""
|
|
pool = Pool()
|
|
Currency2 = pool.get('currency.currency')
|
|
Cashbook = pool.get('cashbook.book')
|
|
Line = pool.get('cashbook.line')
|
|
tab_cur = Currency2.__table__()
|
|
tab_book = Cashbook.__table__()
|
|
tab_line = Line.__table__()
|
|
Operator = fields.SQL_OPERATORS[clause[1]]
|
|
|
|
query = tab_book.join(
|
|
tab_line,
|
|
condition=tab_book.id == tab_line.cashbook,
|
|
).join(
|
|
tab_cur,
|
|
condition=tab_cur.id == tab_book.currency,
|
|
).select(
|
|
tab_cur.id,
|
|
having=Operator(Case(
|
|
(Count(tab_line.id) > 0, True),
|
|
else_=False,
|
|
), clause[2]),
|
|
group_by=[tab_cur.id],
|
|
)
|
|
return [('id', 'in', query)]
|
|
|
|
# end Currency
|