We are planning to convert some of our VF pages to Lightning apps. Some our VF pages, particularly surveys are URL parameter-driven, since we send survey links directly to users, i.e.
Say we convert the VF page to an Lightning app, we would probably be sending the Lightning survey like this
In VF page controller, PageReference.getParameters() contains the much needed
However, in Lightning component controller, PageReference.getParameters() does not contain any URL parameters.
How can I get the URL parameter in Lightning app/component apex controller?