Data binding broken after putting raw ajax json in models

1

First I had this code in routes/index.js:

                hotspots:ajax( {
                  url: 'url-to-external-api',
                  type: 'get'
                } ).then( function( data ) {
                  console.log( 'hotspots: ', data );
                  return data;
                } )

I changed this to:

`hotspots: this.store.findAll( 'hotspot' )`

And in models/hotspot.js:

    import DS from "ember-data";
    
    export default DS.Model.extend( {
      about: DS.attr( ),
      category: DS.attr( ),
      hide_directions: DS.attr( ),
      image_highres: DS.attr( ),
      image_lowres: DS.attr( ),
      images: DS.attr( ),
      lat: DS.attr( ),
      lng: DS.attr( ),
      name: DS.attr( ),
      order: DS.attr( ),
      timestamp: DS.attr( ),
      x_axis: DS.attr( ),
      y_axis: DS.attr( )
    } );

In adapters/hotspot.js:

    import DS from 'ember-data';
    
    export default DS.Adapter.extend( {
      findAll: function( store, type, sinceToken ) {
        var url = type;
        var query = {
          since: sinceToken
        };
        return new Ember.RSVP.Promise( function( resolve, reject ) {
          Ember.$.getJSON( "url-to-external-api" ).then( function( data ) {
            console.log( data );
            Ember.run( null, resolve, data );
          }, function( jqXHR ) {
            jqXHR.then = null; // tame jQuery's ill mannered promises
            Ember.run( null, reject, jqXHR );
          } );
        } );
      }
    } );

When I used the ajax call in routes/index.js, I edited some of the properties of some hotspots in the array. And it would directly be updated in my app through 2-way data-binding. Now that I’m using models, I don’t have this data-binding anymore.

At first I used this code in an action to change some of the properties of the hotspots:

      for ( let value of this.currentModel.hotspots ) {
        if ( value.id === hotspotId ) {
          console.log( value );
          Ember.set( value, "x_axis", event.offsetX );
          Ember.set( value, "y_axis", event.offsetY );
        }
      }

Now I’m using this:

      for ( let value of this.currentModel.hotspots.content ) {
        if ( value.id === hotspotId ) {
          console.log( value );
          Ember.set( value._data, "x_axis", event.offsetX );
          Ember.set( value._data, "y_axis", event.offsetY );
        }
      }

Which isn’t working anymore.

How can I resolve this? Models are best practice, but for what? They are just a pain and working with raw ajax calls is way more easy and straight-forward…