Question

Not too sure if I’m doing this right. It looks a bit more convoluted than it needs to be. But I am trying to pull a specific piece of data out of a json array. I need several features of this data piece, and then I need to take the return, label the return, and pass it through a method at the bottom of success call.

$(document).ready(function() {
  if ( window.location.href.match(/customer_number/).length > 0) {

    $customer_id = window.location.href.split(/customer_number=/)[1];

    $.ajax({
      url: '/customers/filter.json',
      data: { id: $customer_id },
      dataType: 'json',
      success: function(data) {
        response($.map(data, function(row) {
          return {
            value: row.customer.name,
            customer_number: row.customer.customer_number,
            id: row.customer.id,
            name: row.customer.name,
            phone_number: row.customer.phone_number,
            email: row.customer.email,
            service_address: row.customer.service_address,
            service_city: row.customer.service_city,
            service_state: row.customer.service_state,
            service_zip_code: row.customer.service_zip_code,
            billing_adress: row.customer.billing_address,
            billing_city: row.customer.billing_city,
            billing_state: row.customer.billing_state,
            billing_zip_code: row.customer.billing_zip_code,
            primary_contact_name: row.customer.primary_contact ? row.customer.primary_contact.first_name + ' ' + row.customer.primary_contact.last_name : ''
          };
          render_customer(name_of_return);
          //                  ^^ Not sure how to label that return into an object.
        }));
      }
    });
  };
});

Answer 1

You’re passing the returned object back to $.map‘s handling of the return values for the iteration function (it builds up those values in an array), and then handing that array into your response function. In JavaScript, when you’re calling a function (or returning a value out of one), you don’t give the arguments / return value names. In the case of arguments, it’s entirely positional. (The function definition may assign them names, but you don’t when you call them.) In the case of a return value, there is only ever one.