Scrap reason code module

scrap_reason_code/models/__init__.py

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+# Copyright (C) 2019 IBM Corp.
+# Copyright (C) 2019 Open Source Integrators
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from . import reason_code
+from . import stock_move
+from . import stock_scrap

scrap_reason_code/models/reason_code.py

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+# Copyright (C) 2019 IBM Corp.
+# Copyright (C) 2019 Open Source Integrators
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+
+class ReasonCode(models.Model):
+    _name = 'reason.code'
+    _description = 'Reason Code'
+
+    name = fields.Char("Code", required=True)
+    description = fields.Text("Description")
+    location_id = fields.Many2one(
+        'stock.location', string="Scrap Location",
+        domain="[('scrap_location', '=', True)]")

scrap_reason_code/models/stock_move.py

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+# Copyright (C) 2019 IBM Corp.
+# Copyright (C) 2019 Open Source Integrators
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+
+class StockMove(models.Model):
+    _inherit = 'stock.move'
+
+    reason_code_id = fields.Many2one('reason.code', string='Reason code')

scrap_reason_code/models/stock_scrap.py

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+# Copyright (C) 2019 IBM Corp.
+# Copyright (C) 2019 Open Source Integrators
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import api, fields, models
+
+
+class StockScrap(models.Model):
+    _inherit = 'stock.scrap'
+
+    reason_code_id = fields.Many2one(
+        'reason.code', string='Reason Code',
+        states={'done': [('readonly', True)]})
+    scrap_location_id = fields.Many2one(
+        'stock.location', 'Scrap Location',
+        required=True, readonly=True)
+
+    def _prepare_move_values(self):
+        res = super(StockScrap, self)._prepare_move_values()
+        res['reason_code_id'] = self.reason_code_id.id
+        return res
+
+    @api.onchange('reason_code_id')
+    def _onchange_reason_code_id(self):
+        if self.reason_code_id.location_id:
+            self.scrap_location_id = self.reason_code_id.location_id
+
+    @api.multi
+    def write(self, vals):
+        if 'reason_code_id' in vals:
+            self.scrap_location_id = self.env['reason.code'].browse(
+                vals.get('reason_code_id')).location_id
+        return super(StockScrap, self).write(vals)
+
+    @api.model
+    def create(self, vals):
+        if 'reason_code_id' in vals:
+            vals['scrap_location_id'] = self.env['reason.code'].browse(
+                vals.get('reason_code_id')).location_id.id
+        return super(StockScrap, self).create(vals)