MDL-70818 mod_workshop: cache workshop times in modinfo for performance

mod/workshop/lib.php

@@ -2209,3 +2209,47 @@ function mod_workshop_get_path_from_pluginfile(string $filearea, array $args) :
         'filepath' => $filepath,
     ];
 }
+
+/**
+ * Add a get_coursemodule_info function in case any feedback type wants to add 'extra' information
+ * for the course (see resource).
+ *
+ * Given a course_module object, this function returns any "extra" information that may be needed
+ * when printing this activity in a course listing.  See get_array_of_activities() in course/lib.php.
+ *
+ * @param stdClass $coursemodule The coursemodule object (record).
+ * @return cached_cm_info|false An object on information that the courses will know about (most noticeably, an icon).
+ */
+function workshop_get_coursemodule_info($coursemodule) {
+    global $DB;
+
+    $dbparams = ['id' => $coursemodule->instance];
+    $fields = 'id, name, intro, introformat, submissionstart, submissionend, assessmentstart, assessmentend';
+    if (!$workshop = $DB->get_record('workshop', $dbparams, $fields)) {
+        return false;
+    }
+
+    $result = new cached_cm_info();
+    $result->name = $workshop->name;
+
+    if ($coursemodule->showdescription) {
+        // Convert intro to html. Do not filter cached version, filters run at display time.
+        $result->content = format_module_intro('workshop', $workshop, $coursemodule->id, false);
+    }
+
+    // Populate some other values that can be used in calendar or on dashboard.
+    if ($workshop->submissionstart) {
+        $result->customdata['submissionstart'] = $workshop->submissionstart;
+    }
+    if ($workshop->submissionend) {
+        $result->customdata['submissionend'] = $workshop->submissionend;
+    }
+    if ($workshop->assessmentstart) {
+        $result->customdata['assessmentstart'] = $workshop->assessmentstart;
+    }
+    if ($workshop->assessmentend) {
+        $result->customdata['assessmentend'] = $workshop->assessmentend;
+    }
+
+    return $result;
+}