/**
* Makes sure that a custom field (identified by $field->shortname) exists
* for the given context level. If not, it will create a field, putting it
* in the given category (identified by $category->name), creating it if
* necessary.
*
* @param object a field object, specifying the field configuration if a
* new field is created
* @param mixed the context level
* @param object a field_category object, specifying the category
* configuration if a new category is created
* @return object a field object
*/
static function ensure_field_exists_for_context_level($field, $ctx_lvl, $category)
{
if (!is_numeric($ctx_lvl)) {
$ctx_lvl = context_level_base::get_custom_context_level($ctx_lvl, 'block_curr_admin');
}
// see if we need to create a new field
$fields = field::get_for_context_level($ctx_lvl);
if (!empty($fields)) {
foreach ($fields as $f) {
if ($f->shortname === $field->shortname) {
return new field($f);
}
}
}
// No existing field found. See if we need to create a category for it
$categories = field_category::get_for_context_level($ctx_lvl);
$found = false;
if (!empty($categories)) {
foreach ($categories as $c) {
if ($c->name === $category->name) {
$category = $found = $c;
break;
}
}
}
if (!$found) {
// create the category
$category->add();
$categorycontext = new field_category_contextlevel();
$categorycontext->categoryid = $category->id;
$categorycontext->contextlevel = $ctx_lvl;
$categorycontext->add();
}
// create the field
$field->categoryid = $category->id;
$field->add();
$fieldcontext = new field_contextlevel();
$fieldcontext->fieldid = $field->id;
$fieldcontext->contextlevel = $ctx_lvl;
$fieldcontext->add();
return $field;
}
function action_editfield()
{
global $CURMAN;
$level = $this->required_param('level', PARAM_ACTION);
$ctxlvl = context_level_base::get_custom_context_level($level, 'block_curr_admin');
if (!$ctxlvl) {
print_error('invalid_context_level', 'block_curr_admin');
}
$id = $this->optional_param('id', NULL, PARAM_INT);
require_once CURMAN_DIRLOCATION . '/form/customfieldform.class.php';
$tmppage = new customfieldpage(array('level' => $level, 'action' => 'editfield'), $this);
$form = new customfieldform($tmppage->get_moodle_url(), $this);
if ($form->is_cancelled()) {
$tmppage = new customfieldpage(array('level' => $level));
redirect($tmppage->get_url(), get_string('edit_cancelled', 'block_curr_admin'));
} else {
if ($data = $form->get_data()) {
$field = new field($data);
if ($id) {
$field->id = $id;
$field->update();
} else {
$field->add();
// assume each field only belongs to one context level (for now)
$fieldcontext = new field_contextlevel();
$fieldcontext->fieldid = $field->id;
$fieldcontext->contextlevel = $ctxlvl;
$fieldcontext->add();
}
//don't use !empty here because we might be storing a 0 or similar value
if ($data->defaultdata != '') {
// save the default value
$defaultdata = $data->defaultdata;
if ($field->multivalued) {
// parse as a CSV string
// until we can use str_getcsv from PHP 5.3...
$temp = fopen("php://memory", "rw");
fwrite($temp, $defaultdata);
rewind($temp);
$defaultdata = fgetcsv($temp);
fclose($temp);
}
field_data::set_for_context_and_field(NULL, $field, $defaultdata);
} else {
if ($field->multivalued) {
field_data::set_for_context_and_field(NULL, $field, array());
} else {
field_data::set_for_context_and_field(NULL, $field, NULL);
}
}
$plugins = get_list_of_plugins('curriculum/plugins');
foreach ($plugins as $plugin) {
if (is_readable(CURMAN_DIRLOCATION . '/plugins/' . $plugin . '/custom_fields.php')) {
include_once CURMAN_DIRLOCATION . '/plugins/' . $plugin . '/custom_fields.php';
if (function_exists("{$plugin}_field_save_form_data")) {
call_user_func("{$plugin}_field_save_form_data", $form, $field, $data);
}
}
}
$tmppage = new customfieldpage(array('level' => $level));
redirect($tmppage->get_url(), get_string('field_saved', 'block_curr_admin', $field));
} else {
if (!empty($id)) {
if ($this->optional_param('from', NULL, PARAM_CLEAN) == 'moodle' && $level == 'user') {
$moodlefield = $CURMAN->db->get_record('user_info_field', 'id', $id);
if (!$moodlefield) {
print_error('invalidfieldid', 'block_curr_admin');
}
unset($moodlefield->id);
$data_array = (array) $moodlefield;
$data_array['datatype'] = 'text';
$data_array['manual_field_control'] = $moodlefield->datatype;
switch ($moodlefield->datatype) {
case field::checkbox:
$data_array['datatype'] = 'bool';
break;
case field::menu:
$data_array['datatype'] = 'char';
$data_array['manual_field_options'] = $moodlefield->param1;
break;
case field::textarea:
$data_array['manual_field_columns'] = $moodlefield->param1;
$data_array['manual_field_rows'] = $moodlefield->param2;
break;
case field::text:
if ($moodlefield->param3) {
$data_array['manual_field_control'] = 'password';
}
$data_array['manual_field_columns'] = $moodlefield->param1;
$data_array['manual_field_maxlength'] = $moodlefield->param2;
break;
}
} else {
$data = new field($id);
$data_array = $data->to_array();
$defaultdata = field_data::get_for_context_and_field(NULL, $data);
if (!empty($defaultdata)) {
if ($data->multivalued) {
$values = array();
// extract the data
foreach ($defaultdata as $data) {
$values[] = $data->data;
}
// represent as a CSV string
$fh = fopen("php://memory", "rw");
fputcsv($fh, $values);
rewind($fh);
$defaultdata = fgets($fh);
fclose($fh);
} else {
$defaultdata = current($defaultdata);
$defaultdata = $defaultdata->data;
}
}
$data_array['defaultdata'] = $defaultdata;
$plugins = get_list_of_plugins('curriculum/plugins');
foreach ($plugins as $plugin) {
if (is_readable(CURMAN_DIRLOCATION . '/plugins/' . $plugin . '/custom_fields.php')) {
include_once CURMAN_DIRLOCATION . '/plugins/' . $plugin . '/custom_fields.php';
if (function_exists("{$plugin}_field_get_form_data")) {
$data_array += call_user_func("{$plugin}_field_get_form_data", $form, $data);
}
}
}
}
$form->set_data($data_array);
}
$form->display();
}
}
}
