meteor data subscriptions using promise to ensure all data has been delivered to the client

gistfile1.txt

Meteor data subscription

how to ensure all data has been delivered to the client before continuing
(e.g. in order to initialise a jQuery object that must have all UI elements present)


//-------------------------------------------------------------------
Template.sample.onCreated(function() {
//-------------------------------------------------------------------

  allDataReady = new Promise(function(resolve){
    self.subscribe([subscription_name],[subscription_parms],() => {
      Tracker.afterFlush(function () { resolve(); });
    });
  });

});


//-------------------------------------------------------------------
Template.sample.onRendered(function() {
//-------------------------------------------------------------------

  allDataReady.then(() => {
    $("#elementId").sortable({
      axis:"y",
      helper:"clone",
      placeholder: "shoplist-item-placeholder",
      start: function(event,ui) {
        ui.placeholder.height(ui.item.height());
      }
    }).disableSelection().sortable("disable");
  });

});