MDL-34204 grader report: static call to non-static method.

grade/report/grader/index.php

@@ -107,7 +107,7 @@ grade_regrade_final_grades($courseid);
 
 // Perform actions
 if (!empty($target) && !empty($action) && confirm_sesskey()) {
-    grade_report_grader::process_action($target, $action);
+    grade_report_grader::do_process_action($target, $action);
 }
 
 $reportname = get_string('pluginname', 'gradereport_grader');

grade/report/grader/lib.php

@@ -1584,13 +1584,17 @@ class grade_report_grader extends grade_report {
         return $icon;
     }
 
+    public function process_action($target, $action) {
+        return self::do_process_action($target, $action);
+    }
+
     /**
      * Processes a single action against a category, grade_item or grade.
      * @param string $target eid ({type}{id}, e.g. c4 for category4)
      * @param string $action Which action to take (edit, delete etc...)
      * @return
      */
-    public function process_action($target, $action) {
+    public static function do_process_action($target, $action) {
         // TODO: this code should be in some grade_tree static method
         $targettype = substr($target, 0, 1);
         $targetid = substr($target, 1);