New Post: DataIdMultiSelector or String.Selector which is bound to the current Page-Node?

Hello,

I'm working currently on a C1 4.2 project and have the following issue:

Prerequisites:

• I have a IPageFolderData datatype ITeaser
• I have multiple pages which all contains own ITeaser datafolders containing teaser-data
• I have a function which allows the user select, which of the available teaser should be displayed on the page
  

Problem:
When I use the default DataIdMultiSelector this way:

<f:widgetfunction name="Composite.Widgets.String.DataIdMultiSelector" xmlns:f="http://www.composite.net/ns/function/1.0">
    <f:param name="OptionsType">MyProject.ITeaser</f:param>
    <f:param name="CompactMode" value="true" />
</f:widgetfunction>

The selection works as desired, but I always see all datas added to all pages.
But the requirement is, that the user needs to be able to select only from the ITeaser datas from the current Page-Node.

After some reading and testing, I came up with something like this:

<f:widgetfunction name="Composite.Widgets.String.Selector" xmlns:f="http://www.composite.net/ns/function/1.0">
    <f:param name="Options">
        <f:function name="MyProject.GetAllTeasers" xmlns:f="http://www.composite.net/ns/function/1.0">
            <f:param name="currentPageId"><!-- PAGE ID? --></f:param>
        </f:function>
    </f:param>
    <f:param name="KeyFieldName">Id</f:param>
    <f:param name="LabelFieldName">Title</f:param>
    <f:param name="Multiple" value="true" />
    <f:param name="Compact" value="true" />
</f:widgetfunction>

I created a Custom C# function, which takes the current Page-Id as GUID and delivers all ITeaser from this page. I also tried to get the current PageId in the function itself, without any luck.

To access the current PageId, I tried using the PageRenderer.CurrentPageId or the SitemapNavigatior.CurrentPageId, but they're always Guid.Empty...

Does anyone have a solution for this problem, or am I wrong with this requirement using Composite? Are there any other possible solutions to this?

Thanks alot for any help.

Best regards and happy coding,
Chris