1 files changed, 36 insertions, 0 deletions
diff --git a/addons/website_sale_coupon/models/sale_coupon_program.py b/addons/website_sale_coupon/models/sale_coupon_program.py
new file mode 100644
index 00000000..b55d2a0e
--- /dev/null
+++ b/addons/website_sale_coupon/models/sale_coupon_program.py
@@ -0,0 +1,36 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import api, models, _
+from odoo.exceptions import ValidationError
+
+
+class CouponProgram(models.Model):
+    _name = 'coupon.program'
+    _inherit = ['coupon.program', 'website.multi.mixin']
+
+    @api.constrains('promo_code', 'website_id')
+    def _check_promo_code_constraint(self):
+        """ Only case where multiple same code could coexists is if they all belong to their own website.
+            If the program is website generic, we should ensure there is no generic and no specific (even for other website) already
+            If the program is website specific, we should ensure there is no existing code for this website or False
+        """
+        for program in self.filtered(lambda p: p.promo_code):
+            domain = [('id', '!=', program.id), ('promo_code', '=', program.promo_code)]
+            if program.website_id:
+                domain += program.website_id.website_domain()
+            if self.search(domain):
+                raise ValidationError(_('The program code must be unique by website!'))
+
+    def _filter_programs_on_website(self, order):
+        return self.filtered(lambda program: not program.website_id or program.website_id.id == order.website_id.id)
+
+    @api.model
+    def _filter_programs_from_common_rules(self, order, next_order=False):
+        programs = self._filter_programs_on_website(order)
+        return super(CouponProgram, programs)._filter_programs_from_common_rules(order, next_order)
+
+    def _check_promo_code(self, order, coupon_code):
+        if self.website_id and self.website_id != order.website_id:
+            return {'error': 'This promo code is not valid on this website.'}
+        return super()._check_promo_code(order, coupon_code)