changed the interaction table to get all course categories in case a …

…specific level of the coures hierachy should be displayed

classes/local/table/interaction_attention_table.php

@@ -40,6 +40,12 @@
  */
 class interaction_attention_table extends interaction_table {
 
+    /**
+     * In case a specific course category should be shown, all course categories are fetched once ...
+     * ... to find the suitable category later.
+     * @var \stdClass
+     */
+    private $coursecategories;
     /**
      * Constructor for deactivated_workflows_table.
      * @param int $uniqueid Unique id of this table.
@@ -51,15 +57,18 @@ public function __construct($uniqueid, $courseids, $filterdata = null) {
         global $PAGE, $DB;
 
         $fields = "p.id as processid, c.id as courseid, c.fullname as coursefullname, c.shortname as courseshortname, " .
-            "c.startdate, cc.name as category , s.id as stepinstanceid, s.instancename as stepinstancename, ".
-            "s.subpluginname as subpluginname";
+            "c.startdate, cc.name as category, cc.path as categorypath, s.id as stepinstanceid, " .
+            "s.instancename as stepinstancename, s.subpluginname as subpluginname";
         $from = '{tool_lifecycle_process} p join ' .
             '{course} c on p.courseid = c.id join ' .
             '{tool_lifecycle_step} s ' .
             'on p.workflowid = s.workflowid AND p.stepindex = s.sortindex ' .
             'left join {course_categories} cc on c.category = cc.id';
         $ids = implode(',', $courseids);
-
+        if (get_config('tool_lifecycle', 'enablecategoryhierachy')) {
+            // We have to get the complete category tree.
+            $this->coursecategories = $DB->get_records_sql('SELECT id, name, depth, path, parent FROM {course_categories} ');
+        }
         $where = ['FALSE'];
         if ($ids) {
             $where = ['p.courseid IN (' . $ids . ')'];
@@ -124,6 +133,30 @@ public function col_tools($row) {
         return $output;
     }
 
+    /**
+     * Dependent on the setting either returns the closest category or the category that is on the specified depth,
+     * if the category depth is not reached the last category is returned.
+     * @param $row
+     * @return string
+     * @throws \dml_exception
+     */
+    public function col_category($row): String {
+        $categorydepth = get_config('tool_lifecycle', 'enablecategoryhierachy');
+        if ($categorydepth == false) {
+            return $row->category;
+        } else {
+            $categorydepth = (int) get_config('tool_lifecycle', 'coursecategorydepth');
+            $categoryhierachy = explode('/', substr($row->categorypath, 1));
+            $categoryhierachy = array_map('intval', $categoryhierachy);
+            if (isset($categoryhierachy[$categorydepth])) {
+                $category = $this->coursecategories[$categoryhierachy[$categorydepth]];
+                return $category->name;
+            } else {
+                $category = $this->coursecategories[end($categoryhierachy)];
+                return $category->name;
+            }
+        }
+    }
     /**
      * Render date column.
      * @param object $row Row data.