[FIX] subscription: use an `@api.model` method for cron

Since the cron engine has been migrated to use the new-api (4ddc32313996c8cf6e8e6dffd2253aad8a144ccf),
cron methods should be defined as `@api.model`

1 files changed, 5 insertions, 1 deletions

diff --git a/addons/subscription/models/subscription.py b/addons/subscription/models/subscription.py
index 83381822645..8c55ce016c3 100644
--- a/addons/subscription/models/subscription.py
+++ b/addons/subscription/models/subscription.py
@@ -74,13 +74,17 @@ class Subscription(models.Model):
                 'nextcall': subscription.date_init,
                 'model': self._name,
                 'args': repr([[subscription.id]]),
-                'function': 'model_copy',
+                'function': '_cron_model_copy',
                 'priority': 6,
                 'user_id': subscription.user_id.id
             }
             cron = self.env['ir.cron'].create(cron_data)
             subscription.write({'cron_id': cron.id, 'state': 'running'})
 
+    @api.model
+    def _cron_model_copy(self, ids):
+        self.browse(ids).model_copy()
+
     @api.multi
     def model_copy(self):
         for subscription in self.filtered(lambda sub: sub.cron_id):