bigbluebutton-Github/bigbluebutton-html5/imports/api/polls/server/publishers.js

import { Meteor } from 'meteor/meteor';
import { isAllowedTo } from '/imports/startup/server/userPermissions';
import Polls from '/imports/api/polls';
import { check } from 'meteor/check';
import { logger } from '/imports/startup/server/logger';

Meteor.publish('polls', function(credentials) {
  //checking if it is allowed to see Poll Collection in general
  if (!isAllowedTo('subscribePoll', credentials)) {
    this.error(new Meteor.Error(402, "The user was not authorized to subscribe for 'polls'"));
  }

  const { meetingId, requesterUserId, requesterToken } = credentials;

  check(meetingId, String);
  check(requesterUserId, String);
  check(requesterToken, String);

  const selector = {
    meetingId: meetingId,
    users: requesterUserId,
  };

  let options = {};

  if (!isAllowedTo('subscribeAnswers', credentials)) {
    options = {
      fields: {
        'poll.answers.num_votes': 0,
      },
    };
  }

  return Polls.find(selector, options);
});