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在我的自定義插件中，我簡單地使用了三個下拉菜單和一個文本框。當我提交表單並調用validation($data)方法時，我只是將狀態值與文本框值一起下拉。沒有返回另外兩個下拉菜單的Moodle moodleform :: validation（）
價值。我不知道我錯過了什麼。
這裏是我的代碼：
if (!defined('MOODLE_INTERNAL')) {
die('Direct access to this script is forbidden.'); /// It must be included from a Moodle page
}
require_once($CFG->libdir.'/formslib.php');
class ohio_addconfiguration_form extends moodleform {
// Define the form
function definition() {
$id = optional_param('id', 0, PARAM_INT);
$countries = array();
$states = array();
$counties = array();
$cities = array();
$mform =& $this->_form;
// Creating hidden variable id
$mform->addElement('hidden', 'id');
$mform->setType('id', PARAM_INT);
// Creating header "Configuration"
$mform->addElement('header', 'configuration', get_string('ohio', 'local_ohio'));
/* Listing States */
$states_result = $this->get_states("", "1", "id, state_name", "state_name ASC");
if($states_result) {
foreach($states_result as $key=>$state){
$states[$state->id] = $state->state_name;
}
}
$states= count($states)?array(''=>get_string('select_state', 'local_ohio').'...') + $states :array(''=>get_string('select_state', 'local_ohio').'...');
$mform->addElement('select', 'state_id', get_string('select_state', 'local_ohio'), $states);
$mform->addRule('state_id', get_string('required'), 'required', null, 'client');
$mform->setType('state_id', PARAM_INT);
/* Listing Counties */
$counties= array(''=>get_string('select_county', 'local_ohio').'...');
$mform->addElement('select', 'county_id', get_string('select_county', 'local_ohio'), $counties);
$mform->addRule('county_id', get_string('required'), 'required', null, 'client');
$mform->setType('county_id', PARAM_INT);
/* Listing Cities */
$cities= array(''=>get_string('select_city', 'local_ohio').'...');
$mform->addElement('select', 'city_id', get_string('select_city', 'local_ohio'), $cities);
$mform->addRule('city_id', get_string('required'), 'required', null, 'client');
$mform->setType('city_id', PARAM_INT);
// Creating text box for School
$mform->addElement('text', 'school_name', get_string('school_name', 'local_ohio'), 'size="25"');
$mform->setType('school_name', PARAM_TEXT);
$mform->addRule('school_name', get_string('required'), 'required', null, 'client');
$mform->addRule('school_name', get_string('maximumchars', '', 100), 'maxlength', 100, 'client');
$this->add_action_buttons();
}
function validation($data) {
global $DB;
echo "<pre>";
print_r($data);
exit;
}
}