odoo/doc/howtos/backend/exercise-computed

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# HG changeset patch
# Parent a358be0a577b0569831958a8ec1302825c645dee
# Parent 59107edbe5f81bab5e7db172bf2bffa504ce399a
diff --git a/openacademy/models.py b/openacademy/models.py
--- a/openacademy/models.py
+++ b/openacademy/models.py
@@ -28,3 +28,13 @@ class Session(models.Model):
course_id = fields.Many2one('openacademy.course',
ondelete='cascade', string="Course", required=True)
attendee_ids = fields.Many2many('res.partner', string="Attendees")
+
+ taken_seats = fields.Float(string="Taken seats", compute='_taken_seats')
+
+ @api.depends('seats', 'attendee_ids')
+ def _taken_seats(self):
+ for r in self:
+ if not r.seats:
+ r.taken_seats = 0.0
+ else:
+ r.taken_seats = 100.0 * len(r.attendee_ids) / r.seats
diff --git a/openacademy/views/openacademy.xml b/openacademy/views/openacademy.xml
--- a/openacademy/views/openacademy.xml
+++ b/openacademy/views/openacademy.xml
@@ -100,6 +100,7 @@
<field name="start_date"/>
<field name="duration"/>
<field name="seats"/>
+ <field name="taken_seats" widget="progressbar"/>
</group>
</group>
<label for="attendee_ids"/>
@@ -117,6 +118,7 @@
<tree string="Session Tree">
<field name="name"/>
<field name="course_id"/>
+ <field name="taken_seats" widget="progressbar"/>
</tree>
</field>
</record>