How to add layer definition based on username from the login screen

Ashwiniw

Hi All, I would appreciate your help in this very much.

So I have a login screen prior to flex viewer screen (used login viewer widget), and I want to use the logged in user's username as a variable in the definition expression of one of the operational layers. For ex, in config xml I would like to place the definition expression as
"Creator =  {strUsername} "..  however strUsername is a public variable! 

Is there a way to do this in config.xml, or otherwise where can I do this? Please help. Thanks!!!

RobertScheitlin__GISP

Ashwini,

   So there are a lot of variables here...
Is the layer that you want to apply a definitionexpression to a base map or an operational layer and how will you determine which layer to apply it to?
Is the strUsername a public var in the index.mxml?
Have you already tested that you are properly getting the strUsername based on the user logged in?

You would need to modify the ConfigManager.as in the getLayerObject function there are these lines:

        // definitionExpression for featurelayer
        var definitionExpression:String = obj.@definitionexpression[0] ? obj.@definitionexpression : "";

you would need to replace with something like this:

        // definitionExpression for featurelayer
        var definitionExpression:String;
        if(FlexGlobals.topLevelApplication.strUsername  != "" && label == "My Layer that I want the definition for"){
            definitionExpression = "Creator = " + FlexGlobals.topLevelApplication.strUsername;
        }else{
            definitionExpression = obj.@definitionexpression[0] ? obj.@definitionexpression : "";
        }

If you are not confident in your programming abilities, then I would suggest not attempting this. There is nothing worse for people like me than to try and provide code for someone and they have no clue what it is doing or where exactly to put it or they introduce syntax errors by changing something they don't understand.