Can Not update scene from another controller in javafx

Question

I'm new to Javafx , I have a menuBar and multiple scenes that I can switch between them using the MenuBar , all worked fine until I tried to do something when clicking the menu item other than showing the scene.

I'm trying to show some writing in the textfield nom by using the method reload(); of the scene that I'm trying to show, I call the Enfantcontroller from my homeController class where I have the menu items action methods and I call the reload() to write the text to the textfield in enfantView method when I click the menu item but nothing happens after I load the controller for that scene. here's my code:

EnfantController class

    public class EnfantController implements Initializable {  

        @FXML
        private TextField nom;


        /**
         * Initializes the controller class.
         */
        @Override
        public void initialize(URL url, ResourceBundle rb) {
            // TODO

        }
        public void reload() {
               this.nom.setText("vndghj");    
        }

}

homeController class

public class CrechHomeController implements Initializable {

    /**
     * Initializes the controller class.
     */
    @FXML
    private BorderPane borderPane;

    private AnchorPane enfant;

    @Override
    public void initialize(URL url, ResourceBundle rb) {
        try {
            // TODO
            enfant = FXMLLoader.load(getClass().getResource(("/Views/Enfant.fxml")));


        } catch (IOException ex) {
            Logger.getLogger(CrechHomeController.class.getName()).log(Level.SEVERE, null, ex);
        }

    }

    @FXML
    public void enfantItemAction() throws IOException {
        // getting the controller class and execute the reload method

        FXMLLoader loader = new FXMLLoader();
        loader.setLocation(getClass().getResource("/Views/Enfant.fxml"));
        loader.load();

        EnfantController enfantController = loader.getController();
        enfantController.reload();
        borderPane.setCenter(enfant);

    }
}

I know I might be overlooking something here, but I can't figure out what it is, help will be appreciated.

Answer 1

You load the fxml in the initialize method.

In the enfantItemAction you load the fxml again and use the controller created, but you show the node created in the initialize method instead.

You need to use the controller created when the fxml you show was loaded, eg

@FXML
public void enfantItemAction() throws IOException {
    // getting the controller class and execute the reload method

    FXMLLoader loader = new FXMLLoader();
    loader.setLocation(getClass().getResource("/Views/Enfant.fxml"));
    Node node = loader.load();

    EnfantController enfantController = loader.getController();
    enfantController.reload();
    borderPane.setCenter(node);
}

Alternatively you could also store the controller created when loading the fxml file in the initialize method in a field and not load the fxml again in the enfantItemAction method.