1 files changed, 7 insertions, 0 deletions
diff --git a/lib/models/LtiResourceLink.php b/lib/models/LtiResourceLink.php
index 0ea15aa..af8e97a 100644
--- a/lib/models/LtiResourceLink.php
+++ b/lib/models/LtiResourceLink.php
@@ -45,11 +45,18 @@ class LtiResourceLink extends \SimpleORMap implements LtiResourceLinkInterface
             'class_name'  => Course::class,
             'foreign_key' => 'course_id'
         ];
+
         $config['belongs_to']['deployment'] = [
             'class_name'  => LtiDeployment::class,
             'foreign_key' => 'deployment_id'
         ];
 
+        $config['has_many']['grades'] = [
+            'class_name'        => LtiGrade::class,
+            'assoc_foreign_key' => 'link_id',
+            'on_delete'         => 'delete'
+        ];
+
         $config['registered_callbacks']['before_create'] = ['cbCalculatePosition'];
 
         parent::configure($config);