[11.0][ADD] stock_request_tier_validation (#528)

stock_request_tier_validation/models/stock_request.py

@@ -0,0 +1,16 @@
+# Copyright 2019 Eficent Business and IT Consulting Services S.L.
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+from odoo import api, models
+
+
+class StockRequest(models.Model):
+    _name = "stock.request"
+    _inherit = ['stock.request', 'tier.validation']
+    _state_from = ['draft']
+    _state_to = ['open']
+
+    @api.model
+    def _get_under_validation_exceptions(self):
+        res = super(StockRequest, self)._get_under_validation_exceptions()
+        res.append('route_id')
+        return res