Application of data Flowing throught

I have a particular problem I am facing. On my main page of QML, I get a data model object. This data model is then spent on each page. On one page, the data model that is passed is also attached to listview. Of the listview, the user has the ability to load the element selected on a detailed page. On the details page, the user can launch a journal edit to modify the item values and save it.

All the above fine works. My object to edit sheet is attached to my main page of QML as shown below...

      EditBPPage
      {
        // A sheet is used to add new items to the list and the same sheet can be used to edit items
        id: editSheet

        onAddItem:
        {
          // Add new reading to the data model
          console.log("Add new item");
          dataModel.addItem(...);
        }

        onSaveItem:
        {
          console.log("Save edited item");
          dataModel.editItem(...);
        }
      },

Thus, ListView, I trigger the detail of the page using the onTriggered. The selected item is related to the detail pages, this element is set by using the following (point ranging from property)

      onTriggered:
      {
        // When an item is triggered, a navigation takes place to a detailed
        // view of the item where the user can edit the item. The page is created
        // via the ComponentDefinition from the attached objects in the NavigationPane.
        var chosenItem = dataModel.data(indexPath);
        var page = detailsPageDefinition.createObject();

        // Set the Page properties and push the Page to the NavigationPane.
        page.item = chosenItem;
        navigationPane.push(page);
      }

In the detail page, the user can open the sheet change via an action button. The code below shows how to open the edit page...

        // Assign values to proper fields...
        editSheet.item = item;
        editSheet.title = "Edit";
        editSheet.open();

The varying point, object that is passed from the detail page the edit sheet is linked to edit sheet controls... Now when I press save button, the onSaveItem() of my main.qml page is called and the data is correctly saved...

Modifed values are reflected in the view of my list because the data model is related to the listview, but the selected element that is used to display on the detail page, values updates are not replicated on screen...

My question is, how do I get the values to be updated on the details page, Miss me a small detail... I've been digging and so far I gained a bit of luck to solve this particular issue... Any suggestion?

Thank you

Hello

This happens because this line creates a copy of the agenda:

   page.item = chosenItem;

To update the details page, you can spend DataModel + row instead of point and enroll in the dataModel as itemUpdated signals for updating the item when it is modified.

But it is probably easier to move from the changed item return to the Details page of the edit page. One way to do this is directly assigning the property details page.

But to avoid introducing child-> parent dependency, you can add a signal to editPage and signal passing point changed as a parameter. Subscribe to this signal on finishes and update it's own article.

Tags: BlackBerry Developers

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