function action_prereqedit()
{
$curid = $this->required_param('id', PARAM_INT);
$curcrsid = $this->required_param('association_id', PARAM_INT);
$curcrs = new curriculumcourse($curcrsid);
$curcrs->seturl(null, array('s' => $this->pagename, 'action' => 'prereqedit', 'id' => $curid));
$prereqform = $curcrs->create_prerequisite_form();
if ($prereqform->is_cancelled()) {
$this->action_default();
return;
} else {
if ($prereqform->is_submitted() && $prereqform->is_validated()) {
$form_data = $prereqform->get_data();
$output = '';
$added = 0;
$deleted = 0;
/// Process requested prerequisite deletions.
if (!empty($form_data->remove) && isset($form_data->sprereqs)) {
$sprereqs = $form_data->sprereqs;
} else {
$sprereqs = array();
}
foreach ($sprereqs as $sprereq) {
if ($curcrs->del_prerequisite($sprereq)) {
$deleted++;
}
}
/// Process requested prerequisite additions.
if (!empty($form_data->add) && isset($form_data->prereqs)) {
$prereqs = $form_data->prereqs;
} else {
$prereqs = array();
}
foreach ($prereqs as $prereq) {
if (coursepage::_has_capability('block/curr_admin:course:view', $prereq) && $curcrs->add_prerequisite($prereq, !empty($form_data->add_to_curriculum))) {
$added++;
}
}
if ($deleted > 0) {
$delString = $deleted > 1 ? 'deleted_prerequisites' : 'deleted_prerequisite';
$output .= get_string($delString, 'block_curr_admin', $deleted);
}
if ($added > 0) {
$addString = $added > 1 ? 'added_prerequisites' : 'added_prerequisite';
$output .= ($deleted > 0 ? ' / ' : '') . get_string($addString, 'block_curr_admin', $added);
}
if ($deleted > 0 || $added > 0) {
$output .= "\n";
}
$curriculum = $curcrs->curriculum;
if ($curriculum->iscustom) {
$curassid = $CURMAN->db->get_field(CURASSTABLE, 'id', 'curriculumid', $curriculum->id);
$stucur = new curriculumstudent($curassid);
redirect('index.php?s=stucur&section=curr&id=' . $stucur->id . '&action=edit', $output, 3);
}
echo $output;
// recreate the form, to reflect changes in the lists
$prereqform = $curcrs->create_prerequisite_form();
}
}
$prereqform->display();
}
/**
* Display form to manage prerequisites.
*/
public function display_prereqedit()
{
$curid = $this->required_param('id', PARAM_INT);
$curcrsid = $this->required_param('association_id', PARAM_INT);
$curcrs = new curriculumcourse($curcrsid);
$curcrs->seturl(null, array('s' => $this->pagename, 'action' => 'prereqedit', 'id' => $curid));
$prereqform = $curcrs->create_prerequisite_form();
if ($prereqform->is_cancelled()) {
$this->display_default();
return;
} else {
if ($prereqform->is_submitted() && $prereqform->is_validated()) {
$formdata = $prereqform->get_data();
$output = '';
$added = 0;
$deleted = 0;
// Process requested prerequisite deletions.
if (!empty($formdata->remove) && isset($formdata->sprereqs)) {
$sprereqs = $formdata->sprereqs;
} else {
$sprereqs = array();
}
foreach ($sprereqs as $sprereq) {
if ($curcrs->del_prerequisite($sprereq)) {
$deleted++;
}
}
// Process requested prerequisite additions.
if (!empty($formdata->add) && isset($formdata->prereqs)) {
$prereqs = $formdata->prereqs;
} else {
$prereqs = array();
}
// TODO: Ugly, this needs to be overhauled.
$cpage = new coursepage();
foreach ($prereqs as $prereq) {
if ($cpage->_has_capability('local/elisprogram:course_view', $prereq) && $curcrs->add_prerequisite($prereq, !empty($formdata->add_to_curriculum))) {
$added++;
}
}
if ($deleted > 0) {
$delstring = $deleted > 1 ? 'deleted_prerequisites' : 'deleted_prerequisite';
$output .= get_string($delstring, 'local_elisprogram', $deleted);
}
if ($added > 0) {
$addstring = $added > 1 ? 'added_prerequisites' : 'added_prerequisite';
$output .= ($deleted > 0 ? ' / ' : '') . get_string($addstring, 'local_elisprogram', $added);
}
if ($deleted > 0 || $added > 0) {
$output .= "\n";
}
$curriculum = $curcrs->curriculum;
if ($curriculum->iscustom) {
$curassid = $this->_db->get_field(curriculumstudent::TABLE, 'id', array('curriculumid' => $curriculum->id));
$stucur = new curriculumstudent($curassid);
redirect('index.php?s=stucur&section=curr&id=' . $stucur->id . '&action=edit', $output, 3);
}
echo $output;
// Recreate the form, to reflect changes in the lists.
$prereqform = $curcrs->create_prerequisite_form();
}
}
$prereqform->display();
}