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@@ -59,10 +59,12 @@ $filter_warning_msg = true;
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// - ACTIONS -
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// --------------------------------------------------------------------------------
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-$my_selectcat = isset($_GET['selectcat']) ? Security::remove_XSS($_GET['selectcat']) : '';
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-$my_db_name = name_database_by_link($my_selectcat);
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-$tbl_forum_thread = Database :: get_course_table(TABLE_FORUM_THREAD,$my_db_name);
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-$tbl_grade_links = Database :: get_main_table(TABLE_MAIN_GRADEBOOK_LINK);
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+$my_selectcat =isset($_GET['selectcat']) ? Security::remove_XSS($_GET['selectcat']) : '';
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+if ($my_selectcat!='') {
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+ $my_db_name = name_database_by_link($my_selectcat);
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+ $tbl_forum_thread = Database :: get_course_table(TABLE_FORUM_THREAD,$my_db_name);
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+ $tbl_grade_links = Database :: get_main_table(TABLE_MAIN_GRADEBOOK_LINK);
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+}
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//this is called when there is no data for the course admin
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if (isset ($_GET['createallcategories'])) {
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