Error: A required parameter (id) was missing when redirect URL in form Moodle

Error: A required parameter (id) was missing when redirect URL in form Moodle

Moodle 3,开发块

我收到以下错误:'A required parameter (id) was missing'。

它发生在 $mform 中,仅当我在重定向($[=26=)的 'Else if' 语句中使用数组('id' => $instance->id)时]).

令人惊讶的是,因为当我在带有重定向的按钮中使用相同的代码时 url,代码工作正常。

我已经尝试了几种方法,但都无济于事。可能是什么问题?

这是一些代码:

$id = required_param('id', PARAM_INT);

$instance = $DB->get_record('block_instances', array('id' => $id), '*', MUST_EXIST);

$context       = \context_block::instance($instance->id);

$mform = new newlink();

if ($mform->is_cancelled()) {

     $url = new moodle_url('/my');

     redirect($url);

} else if ($fromform = $mform->get_data()) {

// data from form

....

$url = new moodle_url('/blocks/name_of_block/links.php', array('id' =>  $instance->id)); // HERE IS THE PROBLEM

    (Note: when I'm using here the block instance id number 123 directly, the redirect is working correct:

     $url = new moodle_url('/blocks/name_of_block/links.php?id=123';)

     redirect ($url);

} else {

 //Set default data (if any)

$mform->set_data($toform);

//displays the form

$mform->display();

}

$url = new moodle_url('/blocks/name_of_block/links.php', array('id' => $instance->id))

echo $OUTPUT->single_button($url, get_string('button:links', 'block_name_of_block')); // THIS IS WORKING CORRECT

是在提交表单时而不是在重定向时?

在你的表格中你有:

$mform->addElement('hidden', 'id');
$mform->setType('id', PARAM_INT);

在上面的代码中你有:

$toform->id = $id;
$mform->set_data($toform);