Vips modification feedback, re #203

lib/VipsAssignment.php

@@ -218,6 +218,15 @@ class VipsAssignment extends SimpleORMap
             $data['block_id'] = $block->id;
         }
 
+        if ($test->{'feedback-items'}) {
+            foreach ($test->{'feedback-items'}->feedback as $feedback) {
+                $threshold = $feedback['score'] * 100;
+                $data['options']['feedback'][$threshold] = Studip\Markup::purifyHtml(trim($feedback));
+            }
+
+            krsort($data['options']['feedback']);
+        }
+
         $test_obj = VipsTest::create($data_test);
 
         $result = new VipsAssignment();
@@ -1110,6 +1119,28 @@ class VipsAssignment extends SimpleORMap
         return $max_points ? $progress / $max_points : 0;
     }
 
+    /**
+     * Return the individual feedback text for the given user in this assignment.
+     *
+     * @param string $user_id   user id
+     */
+    public function getUserFeedback($user_id)
+    {
+        if (isset($this->options['feedback'])) {
+            $user_points = $this->getUserPoints($user_id);
+            $max_points = $this->test->getTotalPoints();
+            $percent = $user_points / $max_points * 100;
+
+            foreach ($this->options['feedback'] as $threshold => $feedback) {
+                if ($percent >= $threshold) {
+                    return $feedback;
+                }
+            }
+        }
+
+        return null;
+    }
+
     /**
      * Copy this assignment into the given course. Returns the new assignment.
      *