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34 lines
1.0 KiB
Python
34 lines
1.0 KiB
Python
# Copyright 2019 Tecnativa - Vicent Cubells
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# Copyright 2019 Tecnativa - Carlos Dauden
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# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
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from odoo import api, fields, models
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import odoo.addons.decimal_precision as dp
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class ContractLine(models.Model):
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_inherit = "contract.line"
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previous_price = fields.Float(
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string="Previous price",
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related="predecessor_contract_line_id.price_unit",
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readonly=True,
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)
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variation_percent = fields.Float(
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compute="_compute_variation_percent",
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store=True,
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digits=dp.get_precision("Product Price"),
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string="Variation %",
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)
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@api.depends("price_unit", "predecessor_contract_line_id.price_unit")
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def _compute_variation_percent(self):
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for line in self:
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if line.price_unit and line.previous_price:
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line.variation_percent = (
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line.price_unit / line.previous_price - 1
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) * 100
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else:
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line.variation_percent = 0.0
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