Roughing in ember-can: placeholders for strain mod

app/abilities/strain.js

@@ -0,0 +1,17 @@
+import { Ability } from 'ember-can';
+
+export default Ability.extend({
+  // Only admins and writers can create a new strain
+  canAdd: function() {
+    let role = this.get('session.currentUser.role');
+    return (role === 'W') || (role === 'A');
+  }.property('session.currentUser.role'),
+
+  // Only admins and the person who created can edit
+  canEdit: function() {
+    let role = this.get('session.currentUser.role');
+    let id = this.get('session.currentUser.id');
+    let author = this.get('model.author');
+    return (role === 'W' && (+id === author)) || (role === 'A');
+  }.property('session.currentUser.role', 'session.currentUser.id', 'model.author')
+});

app/models/strain.js

@@ -13,6 +13,7 @@ export default DS.Model.extend({
   createdAt: DS.attr('date'),
   updatedAt: DS.attr('date'),
   deletedAt: DS.attr('date'),
+  author: DS.attr('number'),
   totalMeasurements: DS.attr('number'),
   fullName: Ember.computed('speciesName', 'strainName', function() {
     return this.get('speciesName') + ' (' + this.get('strainName') + ')';

app/templates/strains/index.hbs

@@ -1,6 +1,11 @@
 <h2>{{genus-name}} Strains</h2>
 <h3>Total strains: {{controller.length}}</h3>
 
+{{#if (can "add strain")}}
+  {{! Does nothing ATM }}
+  <a class="button-gray smaller">Add Strain</a>
+{{/if}}
+
 <table class="flakes-table">
   <thead>
     <tr>

app/templates/strains/show.hbs

@@ -51,9 +51,19 @@
         </dl>
         <dl class="span-1"></dl>
       </div>
+      {{#if (can "edit strain" model)}}
+        {{! ROW 5 }}
+        <div class="grid-4">
+          <div class="span-1">
+            {{! Does nothing ATM }}
+            <a class="button-gray smaller">Edit Strain</a>
+          </div>
+        </div>
+      {{/if}}
     </fieldset>
   </div>
 </div>
+
 <div class="measurements-container">
   {{outlet}}
 </div>