Fix exporting teacher time report - refs BT#13109

main/admin/teacher_time_report.php

@@ -23,7 +23,7 @@ $toolName = get_lang('TeacherTimeReport');
 // Access restrictions.
 api_protect_admin_script();
 
-$form = new FormValidator('teacher_time_report');
+$form = new FormValidator('teacher_time_report', 'get');
 $startDate = new DateTime(api_get_local_time());
 $startDate->modify('first day of this month');
 $limitDate = new DateTime(api_get_local_time());
@@ -372,27 +372,21 @@ $leftActions = Display::url(
     Display::return_icon('session.png', get_lang('Sessions'), [], ICON_SIZE_MEDIUM),
     api_get_path(WEB_CODE_PATH).'admin/teachers_time_by_session_report.php'
 );
+$exportUrlParams = [
+    'from' => $selectedFrom,
+    'until' => $selectedUntil,
+    'course' => $selectedCourse,
+    'session' => $selectedSession,
+    'teacher' => $selectedTeacher,
+    '_qf__teacher_time_report' => ''
+];
 $rightActions = Display::url(
     Display::return_icon('pdf.png', get_lang('ExportToPDF'), [], ICON_SIZE_MEDIUM),
-    api_get_self().'?'.http_build_query([
-        'export' => 'pdf',
-        'from' => $selectedFrom,
-        'until' => $selectedUntil,
-        'course' => $selectedCourse,
-        'session' => $selectedSession,
-        'teacher' => $selectedTeacher
-    ])
+    api_get_self().'?export=pdf&'.http_build_query($exportUrlParams)
 );
 $rightActions .= Display::url(
     Display::return_icon('export_excel.png', get_lang('ExportExcel'), [], ICON_SIZE_MEDIUM),
-    api_get_self().'?'.http_build_query([
-        'export' => 'xls',
-        'from' => $selectedFrom,
-        'until' => $selectedUntil,
-        'course' => $selectedCourse,
-        'session' => $selectedSession,
-        'teacher' => $selectedTeacher
-    ])
+    api_get_self().'?export=xls&'.http_build_query($exportUrlParams)
 );
 
 $tpl = new Template($toolName);