DeleteModel Mixin

app/mixins/delete-model.js

@@ -0,0 +1,15 @@
+import Ember from 'ember';
+
+const { Mixin } = Ember;
+
+export default Mixin.create({
+  transitionRoute: null,
+
+  actions: {
+    delete: function() {
+      this.get('model').destroyRecord().then(() => {
+        this.transitionToRoute(this.get('transitionRoute'));
+      });
+    },
+  },
+});

app/pods/protected/species/show/controller.js

@@ -1,14 +1,9 @@
 import Ember from 'ember';
+import DeleteModel from '../../../../mixins/delete-model';
 
 const { Controller } = Ember;
 
-export default Controller.extend({
-  actions: {
-    delete: function() {
-      this.get('model').destroyRecord().then(() => {
-        this.transitionToRoute('protected.species.index');
-      });
-    },
-  },
-
+export default Controller.extend(DeleteModel, {
+  // Required for DeleteModel mixin
+  transitionRoute: 'protected.species.index',
 });

tests/unit/mixins/delete-model-test.js

@@ -0,0 +1,12 @@
+import Ember from 'ember';
+import DeleteModelMixin from '../../../mixins/delete-model';
+import { module, test } from 'qunit';
+
+module('Unit | Mixin | delete model');
+
+// Replace this with your real tests.
+test('it works', function(assert) {
+  var DeleteModelObject = Ember.Object.extend(DeleteModelMixin);
+  var subject = DeleteModelObject.create();
+  assert.ok(subject);
+});