Show different class properties at different places

Question

I am calling an GET API, where is am getting account details like name, number, ext Id etc. For parsing the response, i created a class like below.

public class AccWrp {
    public String customer_no;
    public String customer_name;
    public String extId;
}

Now in one post call i need to send Account details(after upsert) with some extra fields, like isActive, Email, Phone, Fax. I thought i will use same class for sending data back, as they are expecting same attributes in the JSON as above. So i added other fields as well.

public class AccWrp {
    public String customer_no;
    public String customer_name;

    //used in post call
    public String email;
    public String phone_no;
    public String fax_no;
    public Boolean is_active;

}

But when i am using this AccWrp class instance in post call. Properties which are not used is going as null. like

"customer_name": null, "customer_no" : null

Is there any way i can have only one class for parsing and for POST call without sending other properties as null.

Is there any way, i can have only one class?

Thanks, Manohar

Answer 1

When making your JSON, pass in "true" as the second parameter to omit null values.

AccWrp a = new AccWrp();
// ...
String body = JSON.serialize(a, true);
// ...