Sort by strains and measurements

app/controllers/measurements/index.js

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+import SortableController from '../sortable';
+
+export default SortableController.extend({
+  sortBy: 'characteristicName'
+});

app/controllers/sortable.js

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+import Ember from 'ember';
+
+export default Ember.ArrayController.extend({
+  queryParams: ['sortBy', 'sortAscending'],
+  sortAscending: true,
+  sortBy: null, // Set in subclass
+  // Make sortProperties computed so that we have a nice URL using sortBy
+  sortProperties: Ember.computed('sortBy', function() {
+    return [this.get('sortBy')];
+  }),
+  actions: {
+    setSortBy: function(fieldName) {
+      this.set('sortBy', fieldName);
+      this.toggleProperty('sortAscending');
+      return false;
+    }
+  }
+});

app/controllers/strains/index.js

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+import SortableController from '../sortable';
+
+export default SortableController.extend({
+  sortBy: 'strainName',
+});