-echo $OUTPUT->container_start('mdl-align');
-echo $OUTPUT->single_button(new moodle_url('/mod/folder/edit.php', array('id'=>$id)), get_string('edit'));
-echo $OUTPUT->container_end();
+if (has_capability('moodle/course:managefiles', $context)) {
+ echo $OUTPUT->container_start('mdl-align');
+ echo $OUTPUT->single_button(new moodle_url('/mod/folder/edit.php', array('id'=>$id)), get_string('edit'));
+ echo $OUTPUT->container_end();
+}