Resolve "LTI 1.1: Fehler beim Exportieren der Ergebnisse"

Closes #6219

Merge request studip/studip!4706

3 files changed, 9 insertions, 6 deletions

diff --git a/app/views/course/lti/grades.php b/app/views/course/lti/grades.php
index 48df9e9..e9b0b40 100644
--- a/app/views/course/lti/grades.php
+++ b/app/views/course/lti/grades.php
@@ -27,7 +27,7 @@
                     </td>
                     <? foreach ($lti_data_array as $lti_data): ?>
                         <td style="text-align: right;">
-                            <? if ($grade = $lti_data->deployment->grades->findOneBy('user_id', $member->user_id)): ?>
+                            <? if ($grade = $lti_data->grades->findOneBy('user_id', $member->user_id)): ?>
                                 <?= sprintf('%.0f%%', $grade->score * 100) ?>
                             <? else: ?>
                                 &ndash;
diff --git a/lib/models/LtiDeployment.php b/lib/models/LtiDeployment.php
index 86f18a0..1125a0c 100644
--- a/lib/models/LtiDeployment.php
+++ b/lib/models/LtiDeployment.php
@@ -32,16 +32,12 @@ class LtiDeployment extends SimpleORMap
             'class_name'  => LtiTool::class,
             'foreign_key' => 'tool_id'
         ];
+
         $config['has_many']['resource_links'] = [
             'class_name'        => LtiResourceLink::class,
             'assoc_foreign_key' => 'deployment_id',
             'on_delete'         => 'delete'
         ];
-        $config['has_many']['grades'] = [
-            'class_name'        => LtiGrade::class,
-            'assoc_foreign_key' => 'link_id',
-            'on_delete'         => 'delete'
-        ];
 
         parent::configure($config);
     }
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);