[FIX] sale_coupon: Allow the public users to use the coupon mechanism

__manifest__.py

@@ -10,6 +10,7 @@
     'data': [
         'views/website_sale_templates.xml',
         'views/website_config_settings_views.xml',
+        'views/sale_coupon_program_views.xml',
     ],
     'auto_install': True,
 }

models/__init__.py

@@ -1,4 +1,6 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
-import sale_order
+import sale_coupon_rule
+import sale_coupon_program
+import sale_order

models/sale_coupon_program.py

@@ -0,0 +1,13 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import models
+
+class SaleCouponProgram(models.Model):
+    _inherit = 'sale.coupon.program'
+
+    def _filter_programs_on_partners(self, order):
+        return self.filtered(lambda program:
+            program.with_context(active_test=False).rule_partner_ids and
+            order.partner_id.id in program.with_context(active_test=False).rule_partner_ids.ids or
+            not program.with_context(active_test=False).rule_partner_ids)

models/sale_coupon_rule.py

@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+from odoo import models, fields, api
+from odoo.tools.safe_eval import safe_eval
+
+class SaleCouponRule(models.Model):
+    _inherit = "sale.coupon.rule"
+
+    is_public_included = fields.Boolean(string="Include Public User", help="Is the public user included into the set of autorized customers", default=True)
+
+    @api.depends('is_public_included')
+    def _compute_rule_partner_ids(self):
+        for applicability in self.filtered(lambda x: x.rule_partners_domain):
+            domain = safe_eval(applicability.rule_partners_domain)
+            applicability.rule_partner_ids = domain and self.env['res.partner'].search(domain)
+            if self.is_public_included:
+                public_users = self.sudo().env.ref('base.group_public').with_context(active_test=False).users
+                public_partners = public_users.mapped('partner_id')
+                applicability.rule_partner_ids += public_partners

views/sale_coupon_program_views.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+
+    <record id="sale_coupon_program_view_form" model="ir.ui.view">
+        <field name="name">sale.coupon.program.view.form</field>
+        <field name="model">sale.coupon.program</field>
+        <field name="inherit_id" ref="sale_coupon.sale_coupon_program_view_promo_program_form"/>
+        <field name="arch" type="xml">
+            <field name="rule_partners_domain" position="before">
+                <field name="is_public_included"/>
+            </field>
+        </field>
+    </record>
+</odoo>