How to make tableview update when new data is added from a different controller

Question

I have two controllers, one controller has a tableview that lists all members and the other controller allows a member to be added. I am having trouble getting the table to update when a member is added. I use two models that are already given to me, so I don't change anything in the models.

Each member has an id and a profession, I use cellValueFactory for listing the members. I tried adding listeners to the cellValueFactoryProperties like this:

idColumn.cellValueFactoryProperty().addListener((obs, oldV, newV) -> memberTv.refresh());

But it still doesn't show new members

The Controller with the TableView:

@FXML
TableColumn<Member, Integer> idColumn;
@FXML
TableColumn<Member, String> profColumn;
@FXML
TableView<Member> memberTv;

@FXML
private void initialize() {
    memberTv.setItems(getClub().getMembers());
    idColumn.setCellValueFactory(cellData -> new 
    ReadOnlyObjectWrapper(cellData.getValue().getId()));
    profColumn.setCellValueFactory(cellData -> new 
    ReadOnlyStringWrapper(cellData.getValue().getProf()));
}
public final Club getClub() {
    \\\returns Club model
}

The Controller that adds members

private int getId() {
    return Integer.parseInt(idTf.getText());
}

private void setId(String id) {
    idTf.setText(id);
}

private String getProf() {
    return profTf.getText();
}

private void setProf(String prof) {
    profTf.setText("" + prof);
}

@FXML
public void handleAddMember(){
    getClub().addMember(getId(), getProf());
}

When I add a member I want the TableView to show the added member, but it only shows members already added in the model.

Answer 1

I figured it out, I had a ClubController that sets the stage based after a menu button is clicked. The problem was that whenever I set a stage I used a new instance of teh Club model instead of using getKiosk(). I changed all the new Club()```` to getClub()``` and it everything works perfectly now.