/**
* 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_editcategory()
{
require_once CURMAN_DIRLOCATION . '/form/fieldcategoryform.class.php';
$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', 0, PARAM_INT);
$tmppage = new customfieldpage(array('level' => $level, 'id' => $id, 'action' => 'editcategory', 'level' => $level));
$form = new fieldcategoryform($tmppage->get_moodle_url());
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()) {
$data->id = $id;
$category = new field_category($data);
if ($category->id) {
$category->update();
} else {
$category->add();
// assume each category only belongs to one context level (for now)
$categorycontext = new field_category_contextlevel();
$categorycontext->categoryid = $category->id;
$categorycontext->contextlevel = $ctxlvl;
$categorycontext->add();
}
$tmppage = new customfieldpage(array('level' => $level));
redirect($tmppage->get_url(), get_string('field_category_saved', 'block_curr_admin', $category));
} else {
if ($id) {
$category = new field_category($id);
$form->set_data($category);
}
$form->display();
}
}
}