Please find code example here :-

EX:

class ResPartner(models.Model):
_inherit = 'res.partner'

@api.model
def create(self, values):
# If the user_id is not provided, set it to the creator's user_id
if 'user_id' not in values:
values['user_id'] = self.env.uid

return super(ResPartner, self).create(values)