parse-server: request.user is "undefined" in the "beforeSave" function in the Cloud code

In my ParseServer migrated into the Heroko + mLab stack,

I have a beforeSave function set for a custom “OBSERVATION” Class as below.

Parse.Cloud.beforeSave("OBSERVATION", function(request, response) {
    ... ...
    var currUser = request.user;
    console.log(request);
    console.log("*** User objectId: " + currUser.id + "; " + currUser.getSessionToken());
    ... ...
});

I want to get the user name triggering the Save event. According to the Parse JavaScript SDK Reference, a “BeforeSaveRequest” takes a “user” as a member, which represents the User triggering the “Save” event.

However, this is always “undefined” for me. Is there anything I missed or did wrong?

Steps to reproduce

Please include a detailed list of steps that reproduce the issue. Include curl commands when applicable.

1. In the BeforeSave function, add console.log(request);

Expected Results

 { triggerName: 'beforeSave', 
   **user: {ParseObject {
    sessionToken: 'xxxxxxxxxxxxxxx',
    id: 'hDijlsmDP'
    }},**
   object:  
    ParseObject { 
      _objCount: 1538, 
      className: 'OBSERVATION', 
      id: 'xUskfmanDY' }, 
   master: true, 
   log: FileLoggerAdapter {}, 
   original:  
    ParseObject { 
      _objCount: 1541, 
      className: 'OBSERVATION', 
      id: 'xUskfmanDY' }
 } 

Actual Outcome

 { triggerName: 'beforeSave', 
   object:  
    ParseObject { 
      _objCount: 1538, 
      className: 'OBSERVATION', 
      id: 'xUskfmanDY' }, 
   master: true, 
   log: FileLoggerAdapter {}, 
   original:  
    ParseObject { 
      _objCount: 1541, 
      className: 'OBSERVATION', 
      id: 'xUskfmanDY' }
 } 

Environment Setup

• Server
  • parse-server version (Be specific! Don’t say ‘latest’.) : 2.2.15
  • Operating System: Heroku Linux
  • Hardware: Heroku Dyno
  • Localhost or remote server? (AWS, Heroku, Azure, Digital Ocean, etc): Heroku
• Database
  • MongoDB version: 3.0
  • Storage engine: Unknown
  • Hardware: Unknown
  • Localhost or remote server? (AWS, mLab, ObjectRocket, Digital Ocean, etc): mLab

Logs/Trace

You can turn on additional logging by configuring VERBOSE=1 in your environment.