From e09f33df1b671f08f6461ff46f2175b698d38d52 Mon Sep 17 00:00:00 2001
From: Damyon Wiese <damyon@moodle.com>
Date: Fri, 8 Feb 2013 15:44:18 +0800
Subject: [PATCH] MDL-37039 Assignment - Do not apply filters to grading table
 for offline assignments

Because the filters do not make sense for offline assignments, they are hidden. But if the active filter
prevents you from seeing any assignments you cannot change it. This change makes it so the filters are
also not applied when the assignment is an offline assignment.
---
 mod/assign/gradingtable.php | 29 ++++++++++++++++-------------
 1 file changed, 16 insertions(+), 13 deletions(-)

diff --git a/mod/assign/gradingtable.php b/mod/assign/gradingtable.php
index c724eed393c..038796ac396 100644
--- a/mod/assign/gradingtable.php
+++ b/mod/assign/gradingtable.php
@@ -101,19 +101,22 @@ class assign_grading_table extends table_sql implements renderable {
         $where = 'u.id ' . $userwhere;
         $params = array_merge($params, $userparams);
 
-        if ($filter == ASSIGN_FILTER_SUBMITTED) {
-            $where .= ' AND s.timecreated > 0 ';
-        }
-        if ($filter == ASSIGN_FILTER_REQUIRE_GRADING) {
-            $where .= ' AND (s.timemodified IS NOT NULL AND
-                             s.status = :submitted AND
-                             (s.timemodified > g.timemodified OR g.timemodified IS NULL))';
-            $params['submitted'] = ASSIGN_SUBMISSION_STATUS_SUBMITTED;
-        }
-        if (strpos($filter, ASSIGN_FILTER_SINGLE_USER) === 0) {
-            $userfilter = (int) array_pop(explode('=', $filter));
-            $where .= ' AND (u.id = :userid)';
-            $params['userid'] = $userfilter;
+        // The filters do not make sense when there are no submissions, so do not apply them.
+        if ($this->assignment->is_any_submission_plugin_enabled()) {
+            if ($filter == ASSIGN_FILTER_SUBMITTED) {
+                $where .= ' AND s.timecreated > 0 ';
+            }
+            if ($filter == ASSIGN_FILTER_REQUIRE_GRADING) {
+                $where .= ' AND (s.timemodified IS NOT NULL AND
+                                 s.status = :submitted AND
+                                 (s.timemodified > g.timemodified OR g.timemodified IS NULL))';
+                $params['submitted'] = ASSIGN_SUBMISSION_STATUS_SUBMITTED;
+            }
+            if (strpos($filter, ASSIGN_FILTER_SINGLE_USER) === 0) {
+                $userfilter = (int) array_pop(explode('=', $filter));
+                $where .= ' AND (u.id = :userid)';
+                $params['userid'] = $userfilter;
+            }
         }
         $this->set_sql($fields, $from, $where, $params);