[IMP] event: add properties fields

Purpose:
--------

This commit adds properties (and related properties definitions) on the
event model. Event stores the definition and it is used on its child
registrations.

Task-3458627

Part-of: odoo/odoo#137589

addons/event/models/event_event.py

@@ -140,6 +140,8 @@ class EventEvent(models.Model):
     tag_ids = fields.Many2many(
         'event.tag', string="Tags", readonly=False,
         store=True, compute="_compute_tag_ids")
+    # properties
+    registration_properties_definition = fields.PropertiesDefinition('Registration Properties')
     # Kanban fields
     kanban_state = fields.Selection([('normal', 'In Progress'), ('done', 'Done'), ('blocked', 'Blocked')], default='normal', copy=False)
     kanban_state_label = fields.Char(
@@ -197,7 +199,6 @@ class EventEvent(models.Model):
     start_sale_datetime = fields.Datetime(
         'Start sale date', compute='_compute_start_sale_date',
         help='If ticketing is used, contains the earliest starting sale date of tickets.')
-
     # Date fields
     date_tz = fields.Selection(
         _tz_get, string='Timezone', required=True,

addons/event/models/event_registration.py

@@ -37,7 +37,6 @@ class EventRegistration(models.Model):
         'event.event.ticket', string='Event Ticket', ondelete='restrict')
     active = fields.Boolean(default=True)
     barcode = fields.Char(string='Barcode', default=lambda self: self._get_random_barcode(), readonly=True, copy=False)
-
     # utm informations
     utm_campaign_id = fields.Many2one('utm.campaign', 'Campaign',  index=True, ondelete='set null')
     utm_source_id = fields.Many2one('utm.source', 'Source', index=True, ondelete='set null')
@@ -66,9 +65,14 @@ class EventRegistration(models.Model):
         ('draft', 'Unconfirmed'), ('cancel', 'Cancelled'),
         ('open', 'Confirmed'), ('done', 'Attended')],
         string='Status', default='draft', readonly=True, copy=False, tracking=6)
+    # properties
+    registration_properties = fields.Properties(
+        'Properties', definition='event_id.registration_properties_definition', copy=True)
+
     _sql_constraints = [
         ('barcode_event_uniq', 'unique(barcode)', "Barcode should be unique")
     ]
+
     @api.depends('partner_id')
     def _compute_name(self):
         for registration in self:

addons/event/views/event_registration_views.xml

@@ -83,6 +83,7 @@
                             <field name="utm_source_id"/>
                         </group>
                     </group>
+                    <field name="registration_properties" columns="2" hideKanbanOption="1"/>
                 </sheet>
                 <div class="oe_chatter">
                     <field name="message_follower_ids"/>