[FIX] event{._sms}: access right for admins of event app

1. Install [Events]

2. On [Settings], create an admin for Events (uncheck all other rights)

3. Click on Events, enter an event

3. Click on [Communication] tab, and try adding a line

Issue: accessing ir.model is blocked

Solution: Find another way

Impacted versions: 15 - master

opw-3163138, 3103199, 3193659

closes odoo/odoo#115101

Related: odoo/enterprise#38097
Signed-off-by: Nicolas Lempereur (nle) <nle@odoo.com>
Signed-off-by: Lee, Hansun (hale) <hale@odoo.com>

addons/event/models/event_mail.py

@@ -80,6 +80,12 @@ class EventMailScheduler(models.Model):
     def _selection_template_model(self):
         return [('mail.template', 'Mail')]
 
+    @api.onchange('notification_type')
+    def set_template_ref_model(self):
+        mail_model = self.env['mail.template']
+        if self.notification_type == 'mail':
+            self.template_ref = "{},{}".format('mail.template', mail_model.search([('model', '=', 'event.registration')], limit=1).id)
+
     event_id = fields.Many2one('event.event', string='Event', required=True, ondelete='cascade')
     sequence = fields.Integer('Display order')
     notification_type = fields.Selection([('mail', 'Mail')], string='Send', default='mail', required=True)

addons/event_sms/models/event_mail.py

@@ -60,6 +60,13 @@ class EventMailScheduler(models.Model):
 
         return super(EventMailScheduler, self).execute()
 
+    @api.onchange('notification_type')
+    def set_template_ref_model(self):
+        super().set_template_ref_model()
+        mail_model = self.env['sms.template']
+        if self.notification_type == 'sms':
+            self.template_ref = "{},{}".format('sms.template', mail_model.search([('model', '=', 'event.registration')], limit=1).id)
+
 
 class EventMailRegistration(models.Model):
     _inherit = 'event.mail.registration'