MDL-69297 assign: Check whether there is content for a submission

Confirm there is some content to be submitted for an assignment when processing it.

diff --git a/mod/assign/locallib.php b/mod/assign/locallib.php
index 4b50121..029265e 100644 (file)
--- a/mod/assign/locallib.php
+++ b/mod/assign/locallib.php
@@ -5129,18 +5129,33 @@ class assign {
         require_once($CFG->dirroot . '/mod/assign/submissionconfirmform.php');
 
         // Check that all of the submission plugins are ready for this submission.
+        // Also check whether there is something to be submitted as well against atleast one.
         $notifications = array();
         $submission = $this->get_user_submission($USER->id, false);
+        if ($this->get_instance()->teamsubmission) {
+            $submission = $this->get_group_submission($USER->id, 0, false);
+        }
+
         $plugins = $this->get_submission_plugins();
+        $hassubmission = false;
         foreach ($plugins as $plugin) {
             if ($plugin->is_enabled() && $plugin->is_visible()) {
                 $check = $plugin->precheck_submission($submission);
                 if ($check !== true) {
                     $notifications[] = $check;
                 }
+
+                if (is_object($submission) && !$plugin->is_empty($submission)) {
+                    $hassubmission = true;
+                }
             }
         }
 
+        // If there are no submissions and no existing notifications to be displayed the stop.
+        if (!$hassubmission && !$notifications) {
+            $notifications[] = get_string('addsubmission_help', 'assign');
+        }
+
         $data = new stdClass();
         $adminconfig = $this->get_admin_config();
         $requiresubmissionstatement = $this->get_instance()->requiresubmissionstatement;