On a tree view:
- Add a button returning an `act_url` action; e.g.:
```
@api.multi
def open_google(self):
return {
'type': 'ir.actions.act_url',
'url': 'https://google.fr/',
'target': 'new',
}
```
- Click on a button
The action call works only once because the button is never re-enabled.
The button is actually enabled only at view rendering. Therefore, we
call `on_close` in order to reload the view.
opw-784587