42 lines
1.4 KiB
Python
42 lines
1.4 KiB
Python
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# -*- coding: utf-8; -*-
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################################################################################
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#
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# Rattail -- Retail Software Framework
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# Copyright © 2010-2020 Lance Edgar
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#
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# This file is part of Rattail.
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#
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# Rattail is free software: you can redistribute it and/or modify it under the
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# terms of the GNU General Public License as published by the Free Software
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# Foundation, either version 3 of the License, or (at your option) any later
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# version.
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#
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# Rattail is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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#
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# You should have received a copy of the GNU General Public License along with
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# Rattail. If not, see <http://www.gnu.org/licenses/>.
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#
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################################################################################
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"""
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CORE-POS misc. utilities
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"""
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import sqlalchemy as sa
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from corepos.db.office_op import Session as CoreSession, model as corepos
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from rattail.db.util import short_session
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def get_max_existing_vendor_id(session=None):
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"""
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Returns the "last" (max) existing value for the ``vendors.vendorID``
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column, for use when creating new records, since it is not auto-increment.
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"""
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with short_session(Session=CoreSession, session=session) as s:
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return s.query(sa.func.max(corepos.Vendor.id))\
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.scalar() or 0
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