I believe when you adapt the Model from SlingHttpServletRequest, it should be available from your request. If not, then you may retrieve it in js/jquery/any other framework/lib and then pass it to server via ajax/form post/hidden param etc. based on your use case.
I believe when you adapt the Model from SlingHttpServletRequest, it should be available from your request. If not, then you may retrieve it in js/jquery/any other framework/lib and then pass it to server via ajax/form post/hidden param etc. based on your use case.
As Gaurav suggests - try to pass to a Java AEM service using AJAX. TYpically values are passed to HTL Java via component dialogs. However - this value cannot be passed in this manner.
Or a possible solution here is to build a custom sling resource type - which is based on JavaScript anyhow. THen you can get this value via the custom type and pass as part of the component dialog.
