[IMP] mass_mailing: Display the number of clicks on reporting

Purpose
=======

On the pivot table for reporting on mass mailing you have all the options on the individual mass mailing, except clicks.
This stat is however available in mass mail form

Secification
============

Add 'Clicks' in pivot table reporting view

addons/mass_mailing/models/mass_mailing.py

@@ -414,6 +414,7 @@ class MassMailing(models.Model):
     sent = fields.Integer(compute="_compute_statistics")
     delivered = fields.Integer(compute="_compute_statistics")
     opened = fields.Integer(compute="_compute_statistics")
+    clicked = fields.Integer(compute="_compute_statistics")
     replied = fields.Integer(compute="_compute_statistics")
     bounced = fields.Integer(compute="_compute_statistics")
     failed = fields.Integer(compute="_compute_statistics")
@@ -457,6 +458,7 @@ class MassMailing(models.Model):
                 COUNT(CASE WHEN s.scheduled is not null AND s.sent is null AND s.exception is not null THEN 1 ELSE null END) AS failed,
                 COUNT(CASE WHEN s.sent is not null AND s.bounced is null THEN 1 ELSE null END) AS delivered,
                 COUNT(CASE WHEN s.opened is not null THEN 1 ELSE null END) AS opened,
+                COUNT(CASE WHEN s.clicked is not null THEN 1 ELSE null END) AS clicked,
                 COUNT(CASE WHEN s.replied is not null THEN 1 ELSE null END) AS replied,
                 COUNT(CASE WHEN s.bounced is not null THEN 1 ELSE null END) AS bounced,
                 COUNT(CASE WHEN s.exception is not null THEN 1 ELSE null END) AS failed
@@ -474,6 +476,7 @@ class MassMailing(models.Model):
             total = row.pop('total') or 1
             row['received_ratio'] = 100.0 * row['delivered'] / total
             row['opened_ratio'] = 100.0 * row['opened'] / total
+            row['clicks_ratio'] = 100.0 * row['clicked'] / total
             row['replied_ratio'] = 100.0 * row['replied'] / total
             row['bounced_ratio'] = 100.0 * row['bounced'] / total
             self.browse(row.pop('mailing_id')).update(row)

addons/mass_mailing/models/mass_mailing_report.py

@@ -17,6 +17,7 @@ class MassMailingReport(models.Model):
     opened = fields.Integer(readonly=True)
     bounced = fields.Integer(readonly=True)
     replied = fields.Integer(readonly=True)
+    clicked = fields.Integer(readonly=True)
     state = fields.Selection([('draft', 'Draft'), ('test', 'Tested'), ('done', 'Sent')],
         string='Status', readonly=True)
     email_from = fields.Char('From', readonly=True)
@@ -39,6 +40,7 @@ class MassMailingReport(models.Model):
                     (count(ms.sent) - count(ms.bounced)) as delivered,
                     count(ms.opened) as opened,
                     count(ms.replied) as replied,
+                    count(ms.clicked) as clicked,
                     mm.state,
                     mm.email_from
                 FROM

addons/mass_mailing/views/mass_mailing_report_views.xml

@@ -11,6 +11,7 @@
                     <field name="opened" type="measure"/>
                     <field name="bounced" type="measure"/>
                     <field name="replied" type="measure"/>
+                    <field name="clicked" type="measure"/>
                 </pivot>
             </field>
         </record>