Question

I’m using renderJSON() method to return an array of objects, with a custom JsonSerializer for the class of each element. The response has the following format:

[{"id":2,"name":"fred"},{...},...]

But I would like to add the name of the array at the begginning:

"arrayname":[{"id":2,"name":"fred"},{...},...]

How can I add the name of the object to a JSON response with renderJSON()? Should I use a template or can I do it with java code?

Answer 1

"arrayname":[{"id":2,"name":"fred"},{...},...]

looks like invalid Json, but if you wrap the array in an object you could get:

{"arrayname":[{"id":2,"name":"fred"},{...},...]}

E.g. something like this:

public class MyArrayWrapper {
    public final User[] arrayname;
    public MyArrayWrapper(User[] arrayname) {
        this.arrayname = arrayname;
    }
}

Then you can call renderJSON(new MyArrayWrapper(yourUserArray)); to get JSON like:

{"arrayname":[{"id":2,"name":"fred"},{...},...]}