Referencing model data from within a function

I’m extremely new to ember CLI(and javascript for that matter), so I’m not sure I’m doing this the ember way, or even anywhere close to correct, but I have the following function in templates/components/sig.hbs. If I type in a value for patdata, everything works perfectly, but with a value of {{pat}} I get an “unexpected end of input” error. How can I go about accomplishing this? I’ve reviewed the ember guide on passing a property to a component, and I can’t quite get it. Any advice would be much appreciated!

  var doc = html2pdf().from(element).set(opt).output('blob').then(function (blob){
    var patdata = {{pat}}
    alert (patdata)

    var data = new FormData();
    data.append('data' , blob);
    data.append('data', patdata);
    var xhr = new XMLHttpRequest();
    xhr.onreadystatechange = function() {
    if (this.readyState == 4) {
    if (this.status !== 200) {}
      }'POST', 'http://localhost:8080/pdf', true);



After a lot of time on Google, I came upon the following recommendation:

  var obj  = Ember.Object.create(this.get('store')),
  hash = obj.getProperties('pat'); 
  patdata = JSON.stringify(hash);

Unfortunately, this just returns {}