[IMP] event : Add Stat button on contact form to count attended events

Count childs_ids too

addons/event/__manifest__.py

@@ -29,6 +29,7 @@ Key Features
         'data/event_data.xml',
         'views/event_config_settings_views.xml',
         'views/event_templates.xml',
+        'views/res_partner_views.xml',
         'data/email_template_data.xml',
     ],
     'demo': [

addons/event/models/__init__.py

@@ -4,3 +4,4 @@
 import event
 import event_mail
 import event_config_settings
+import res_partner

addons/event/models/res_partner.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import api, fields, models
+
+class ResPartner(models.Model):
+    _inherit = 'res.partner'
+
+    event_count = fields.Integer("Events", compute='_compute_event_count', help="Number of events the partner has participated.")
+
+    def _compute_event_count(self):
+        for partner in self:
+            partner.event_count = self.env['event.event'].search_count([('registration_ids.partner_id', 'child_of', partner.ids)])
+
+    @api.multi
+    def action_event_view(self):
+        action = self.env.ref('event.action_event_view').read()[0]
+        action['context'] = {}
+        action['domain'] = [('registration_ids.partner_id', 'child_of', self.ids)]
+        return action

addons/event/views/res_partner_views.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0"?>
+<odoo>
+    <data>
+        <record id="res_partner_view_tree" model="ir.ui.view">
+            <field name="name">view.res.partner.form.event.inherited</field>
+            <field name="model">res.partner</field>
+            <field name="inherit_id" ref="base.view_partner_form"/>
+            <field name="arch" type="xml">
+                <div name="button_box" position="inside">
+                    <button class="oe_stat_button"
+                        type="object"
+                        icon="fa-ticket"
+                        name="action_event_view" attrs="{'invisible': [('event_count','=', 0)]}">
+                        <field string="Events" name="event_count" widget="statinfo"/>
+                    </button>
+                </div>
+            </field>
+        </record>
+    </data>
+</odoo>