@AuraEnabled getter, setter and variables

Question

So I have a getter, setter and @AuraEnabled method. I know the way this was designed means that you can't have instance variables due to methods being static because of @AuraEnabled. My question is since I get an error message 'variables cannot be found', and my method is long, which is the best way to procede. I could use setParams and callbacks but I have a lot of variables. A lot of the functionality is in the apex method. Is there a better way?

 @AuraEnabled
public static id accidc = Apexpages.currentPage().getParameters().get('id');

When I add static tag theres and error 'AuraEnabled fields cannot be static' however, if its not static then I cannot access the variable in my save method.

    @AuraEnabled
    public static void Save()
   { ...

    CurrentLogdinUser =[SELECT name from User where id = :UserInfo.getUserId()].name; // --- error --- Variable does not exist
   ...
   }

I will also try to add a wrapper for my variables.

Answer 1

Unlike Visualforce, Lightning doesn't maintain state (a "view state") that is passed to the server. This is part of what makes Lightning... lightning. Passing state back and forth is expensive when it's not necessary, which is what made Visualforce so slow.

If you have a lot of variables, just use a wrapper class:

public class Params {
    @AuraEnabled public String value1;
    @AuraEnabled public String value2;
}
@AuraEnabled public static Params doSomething(Params value) {
    // update value...
    return value;
}

Using this design, you only need to pass a single parameter back and forth, which is a good design pattern anyways.