Modified line-item-detail model

app/models/line-item-detail.js

@@ -1,26 +1,29 @@
 import AbstractModel from 'hospitalrun/models/abstract';
 import DS from 'ember-data';
+import Ember from 'ember';
 import NumberFormat from 'hospitalrun/mixins/number-format';
 
+const { computed, get } = Ember;
+
 export default AbstractModel.extend(NumberFormat, {
+  // Attributes
   department: DS.attr('string'),
   expenseAccount: DS.attr('string'),
   name: DS.attr('string'),
   price: DS.attr('number'),
-  pricingItem: DS.belongsTo('pricing', {
-    async: false
-  }),
   quantity: DS.attr('number'),
   total: DS.attr('number'),
 
-  amountOwed: function() {
-    let price = this.get('price');
-    let quantity = this.get('quantity');
+  // Associations
+  pricingItem: DS.belongsTo('pricing', { async: false }),
+
+  amountOwed: computed('price', 'quantity', function() {
+    let price = get(this, 'price');
+    let quantity = get(this, 'quantity');
     let total = 0;
     if (this._validNumber(price) && this._validNumber(quantity)) {
       total = this._numberFormat((price * quantity), true);
     }
     return total;
-  }.property('price', 'quantity')
-
+  })
 });