daymeter-client.js

Meteor.startup(function () {
  Session.setDefault('__blocksRendered', false);
});

// **************** SCHEDULES **************** //

Template.schedules.rendered = function () {

}

Template.schedule.rendered = function () {
  var list = this.find('div.schedule__blocks');
  var $list = $(list);

  $list.sortable();
}

Template.schedules.schedules = function () {
  var data = Schedules.find().fetch();
  return data;
}

// **************** BLOCKS ******************* //
Template.blocks.rendered = function () {

}

// Hate you, Blaze rendered callback
Deps.autorun(function () {
  console.log('blocksSub ready: ' + blocksSub.ready());
  if (Session.equals('__blocksRendered', true)) {
    var $list = $('.schedule-block-list');

    console.log($list.length);

    $list.draggable({
      connectToSortable: '.schedule__blocks',
      helper: "clone"
    });
  }
});

Template.block.rendered = function () {
  if (blocksSub.ready()) {
    Session.set('__blocksRendered', true);
  }
}

Template.blocks.blocks = function () {
  var data = Blocks.find().fetch();
  return data;
}

Template.block.formattedDuration = function () {
  var duration = moment.duration(this.duration);
  return duration.format('H:mm:ss');
}

daymeter.js

var _self = this;

if (Meteor.isClient) {
  Deps.autorun(function () {
    _self.schedulesSub = Meteor.subscribe('dayMeterSchedules');
    _self.blocksSub = Meteor.subscribe('dayMeterBlocks');
  });
}