How can we pass custom information to a custom ReportStorageWebExtension

Hi Indranil,

The ReportStorageWebExtension methods are executed in a separate HTTP module, so it is not possible to access your application's URL parameters there. In any case, you can make your application's HttpContext Session data available in this HTTP module by using the approach demonstrated in the T339643: How to access the values stored in HttpContext/Session while working with the ASP.NET HTML5 Document Viewer and End-User Report Designer controls KB article. So, by using this approach, you will be able to pass required information to the ReportStorageWebExtension by using the Session.

Hi,

I had this same issue - and enabling HTTP session state is a rather heavy-handed solution. HTTP session state is best avoided for scalability reasons - and if you've managed to avoid it for the rest of your application, it's a real shame to have to pull it in for this one component.

Here is another solution - intercepting all the DX ajax calls to inject your necessary data as headers.

This example is coded in TS - but you can adapt if you're using pure JS.
Here I am injecting both my authentication token, and additional data.

TypeScript
// override DevExpress ajax to inject requisite headers
let dxSendRequest = DevExpress.Analytics.Utils.ajaxSetup.sendRequest;
DevExpress.Analytics.Utils.ajaxSetup.sendRequest = function (settings: JQueryAjaxSettings) {
    settings.headers = {
        'Authorization': 'Bearer ' + _tokenService.getToken(),
        'ReportStorageSubfolder': _reportStorageFolderService.getActiveFolder()
    };
    return dxSendRequest(settings);
}