golem_activity_registration_slot/models/golem_activity_registration_slot.py

@@ -40,8 +40,24 @@ class GolemActivityRegistrationSlot(models.Model):
     def check_slot_hours(self):
         """ Check slot hours consistency """
         for slot in self:
+            if slot.hour_start >= slot.hour_stop:
+                verr = _(u'Slot start must be before slot stop')
+                raise ValidationError(verr)
             if slot.hour_start < slot.activity_id.hour_start or \
             slot.hour_stop > slot.activity_id.hour_stop:
                 verr = _(u'Slot start and stop must be between activity start and'
                          ' activity stop.')
                 raise ValidationError(verr)
+
+    @api.constrains('sequence')
+    def calculate_slot_hours(self):
+        """ Calcualte slot hours """
+        slots = self.env['golem.activity.registration.slot'].search(
+            [('activity_id', '=', self[0].activity_id.id)], order='sequence')
+        for id_slot, slot in enumerate(slots):
+            hour_start = slot.activity_id.hour_start + (slot.activity_id.slots_duration * id_slot)
+            hour_stop = hour_start + slot.activity_id.slots_duration
+            slot.write({
+                'hour_start': hour_start,
+                'hour_stop': hour_stop
+            })