Render post ratings

app/Knockout/Rating.php

@@ -25,7 +25,28 @@ class Rating {
 
     public function icon()
     {
-        return sprintf('/img/ratings/%s-24.gif', $this->name);
+        $valid = [
+            'agree',
+            'disagree',
+            'funny',
+            'friendly',
+            'cute',
+            'optimistic',
+            'sad',
+            'artistic',
+            'informative',
+            'idea',
+            'zing',
+            'winner',
+            'bad-reading',
+            'late',
+            'dumb'
+        ];
+
+        $name = str_replace(' ', '-', $this->name);
+        $index = array_search($name, $valid);
+        $name = $index > -1 ? $valid[$index] : 'unknown';
+        return sprintf('/img/ratings/%s-24.gif', $name);
     }
 
 }