• Summary

  If you use the Prototype javascript library, the execution of a newFetchPersonRequest created with PROFILE_DETAILS fails.  This happens because MyOpenSpace incorrectly views Prototype's Array extensions as requested fields.

• Example (can be added via http://brendan.ilike.com/gadgets/myspace_test.xml)

  <script type="text/javascript" src="http://s1.ilike.com/js/prototype.js"></script>
  <script type="text/javascript">
  <!--
  function doIt() {
    var req = opensocial.newDataRequest();
    var params = {};
  
    // Ask for the profile url
    params[opensocial.DataRequest.PeopleRequestFields.PROFILE_DETAILS] = [opensocial.Person.Field.PROFILE_URL];
  
    // Ask for the owner
    req.add(req.newFetchPersonRequest(opensocial.IdSpec.PersonId.OWNER, params), 'owner');
  
    var callback = function(response) {
      // process response
      var owner = response.get('owner');
  
      var responseEl = document.getElementById('response');
      responseEl.innerHTML = "global error? " + response.hadError() +
                             "<br/>global error message: " + response.getErrorMessage() +
                             "<br/>owner error? " + owner.hadError() +
                             "<br/>owner error message: " + owner.getErrorMessage();
    };
  
    req.send(callback);
  }
  
  setTimeout(doIt, 500);
  // -->
  </script>
  <div id="response">No response received yet...</div>

• Expected result

  Regardless of whether prototype.js is included, the response div should say that no errors occurred. This is a valid call.

   

• Actual result

  If you include prototype.js, you'll receive the following error message:
  "Request contains not implemented fields:each, eachSlice, all, any, collect, detect, findAll, grep, include, inGroupsOf, inject, invoke, max, min, partition, pluck, reject, sortBy, toArray, zip, size, inspect, find, select, member, entries, _reverse, _each, clear, first, last, compact, flatten, without, uniq, intersect, clone, toJSON".

  These values are utility functions that Prototype adds to Javascript arrays. They should not be interpreted as requested fields for the PROFILE_DETAILS parameter.

  If you omit prototype.js, the call completes as expected.

• Related

  There is another brief report of this issue with some workaround code. However, it involves monkey patching the MyOpenSpace javascript, which I'm sure is against the TOS and is qutie obviously prone to breaking.

  Instead of simply letting developeres work around this, MySpace should make sure the 0.8 code is compatible with Prototype. This works in 0.7.

I'd suggest reading the Prototype Array documentation section entitled "Why you should stop using for...in to iterate" — it's a perfect description of what the container code is doing incorrectly.