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Passing D2W Listing Component Datasource to another component
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Passing D2W Listing Component Datasource to another component

  • Subject: Passing D2W Listing Component Datasource to another component
  • From: David Avendasora <email@hidden>
  • Date: Fri, 8 Oct 2010 13:56:15 -0400
Hi all,

I'm using the instructions here: http://wiki.objectstyle.org/confluence/display/WO/D2W+Flow+Control to add a function to my D2W listing page that will create and Excel file of the objects listed. It works great, but I'm not comfortable with how I'm getting the EODataSource from the existing page. Here's how I'm doing it now:

    // "Export To Excel"
    public WOActionResults exportToExcel(WOComponent sender) {
        setSender(sender);
        ListPageInterface lpi = (ListPageInterface) D2W.factory()
                                                       .pageForConfigurationNamed("ListExcelCCCommunicationIdentity",
                                                                                  sender().session());
        lpi.setDataSource((EODataSource) sender().parent()
                                                 .valueForBinding("dataSource"));
        lpi.setNextPage(sender());
        return (WOActionResults) lpi;
    }

the call to: sender().parent().valueForBinding("dataSource") seems wrong since it depends upon the parent of the ERDControllerButton to have the datasource, which is not always true.

What would be the proper way to get the dataSource?

Dave 
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