initial commit 2

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diff --git a/addons/mrp_subcontracting/models/mrp_bom.py b/addons/mrp_subcontracting/models/mrp_bom.py
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+++ b/addons/mrp_subcontracting/models/mrp_bom.py
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+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import api, fields, models, _
+from odoo.exceptions import ValidationError
+from odoo.osv.expression import AND
+
+class MrpBom(models.Model):
+    _inherit = 'mrp.bom'
+
+    type = fields.Selection(selection_add=[
+        ('subcontract', 'Subcontracting')
+    ], ondelete={'subcontract': lambda recs: recs.write({'type': 'normal', 'active': False})})
+    subcontractor_ids = fields.Many2many('res.partner', 'mrp_bom_subcontractor', string='Subcontractors', check_company=True)
+
+    def _bom_subcontract_find(self, product_tmpl=None, product=None, picking_type=None, company_id=False, bom_type='subcontract', subcontractor=False):
+        domain = self._bom_find_domain(product_tmpl=product_tmpl, product=product, picking_type=picking_type, company_id=company_id, bom_type=bom_type)
+        if subcontractor:
+            domain = AND([domain, [('subcontractor_ids', 'parent_of', subcontractor.ids)]])
+            return self.search(domain, order='sequence, product_id', limit=1)
+        else:
+            return self.env['mrp.bom']
+
+    @api.constrains('operation_ids', 'type')
+    def _check_subcontracting_no_operation(self):
+        if self.filtered_domain([('type', '=', 'subcontract'), ('operation_ids', '!=', False)]):
+            raise ValidationError(_('You can not set a Bill of Material with operations as subcontracting.'))