50 lines
1.6 KiB
Python
50 lines
1.6 KiB
Python
# This file is part of Tryton. The COPYRIGHT file at the top level of
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# this repository contains the full copyright notices and license terms.
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from sql.conditionals import Coalesce
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from sql.operators import Equal
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from trytond.model import (
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ModelView, ModelSQL, DeactivableMixin, fields, Exclude, tree)
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from trytond.pyson import Eval
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__all__ = ['Category']
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STATES = {
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'readonly': ~Eval('active'),
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}
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DEPENDS = ['active']
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class Category(DeactivableMixin, tree(separator=' / '), ModelSQL, ModelView):
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"Category"
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__name__ = 'party.category'
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name = fields.Char('Name', required=True, states=STATES, translate=True,
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depends=DEPENDS,
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help="The main identifier of the category.")
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parent = fields.Many2One('party.category', 'Parent',
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select=True, states=STATES, depends=DEPENDS,
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help="Add the category below the parent.")
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childs = fields.One2Many('party.category', 'parent',
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'Children', states=STATES, depends=DEPENDS,
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help="Add children below the category.")
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@classmethod
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def __setup__(cls):
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super(Category, cls).__setup__()
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t = cls.__table__()
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cls._sql_constraints = [
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('name_parent_exclude',
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Exclude(t, (t.name, Equal), (Coalesce(t.parent, -1), Equal)),
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'party.msg_category_name_unique'),
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]
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cls._order.insert(0, ('name', 'ASC'))
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@classmethod
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def __register__(cls, module_name):
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super(Category, cls).__register__(module_name)
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table_h = cls.__table_handler__(module_name)
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# Migration from 4.6: replace unique by exclude
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table_h.drop_constraint('name_parent_uniq')
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