If fields (user_id or car_id or city_id) = FALSE (Empty field) I need hide field time_id
Below example work for one field how add other field here?
attrs="{'invisible': [('user_id', '=', False)]}"
Try this:
<field name="time_id" attrs="{'invisible': ['|', '|', ('user_id', '=', False), ('car_id', '=', False), ('city_id', '=', False)]}"/>