function definition()
{
global $CFG;
$mform =& $this->_form;
$add = optional_param('add', 0, PARAM_ALPHA);
$return = optional_param('return', 0, PARAM_BOOL);
//return to course/view.php if false or mod/modname/view.php if true
$type = optional_param('type', '', PARAM_ALPHANUM);
$section = required_param('section', PARAM_INT);
$course = required_param('course', PARAM_INT);
$mform->addElement('header', 'searchheader', get_string('searchheader', 'taoresource'));
$plugins = taoresource_get_plugins();
// let the plugins see the form definition
foreach ($plugins as $plugin) {
$rc = $plugin->search_definition($mform);
if (!$rc) {
break;
}
}
$this->add_action_buttons(true, get_string('searchtaoresource', 'taoresource'));
if (!($course = get_record("course", "id", $course))) {
error("This course doesn't exist");
}
$context = get_context_instance(CONTEXT_COURSE, $course->id);
if (has_capability('moodle/course:manageactivities', $context)) {
$mform->addElement('header', 'addheader', get_string('addheader', 'taoresource'));
$addbutton = $mform->addElement('submit', 'addtaoresource', get_string('addtaoresource', 'taoresource'));
$buttonattributes = array('title' => get_string('addtaoresource', 'taoresource'), 'onclick' => "location.href = '" . $CFG->wwwroot . "/mod/taoresource/edit.php?course={$course->id}§ion={$section}&type={$type}&add={$add}&return={$return}&mode=add'; return false;");
$addbutton->updateAttributes($buttonattributes);
}
}
/**
* Check all the plugins to see if they specify the extra screen
*/
function taoresource_extra_resource_screen()
{
$plugins = taoresource_get_plugins();
$extra = false;
foreach ($plugins as $plugin) {
$extra = $plugin->taoresource_entry_extra_form_required();
if ($extra) {
break;
}
}
return $extra;
}
function validation($data, $files)
{
$errors = parent::validation($data, $files);
// let the plugins see the form validation
$plugins = taoresource_get_plugins();
foreach ($plugins as $plugin) {
$rc = $plugin->taoresource_entry_extra_validation($data, $files, $errors, $this->taoresource_entry_mode);
if (!$rc) {
break;
}
}
return $errors;
}
function validation($data, $files)
{
$errors = parent::validation($data, $files);
if ($this->taoresource_entry_mode == 'add') {
// make sure that either the file or the URL are supplied
if (empty($data['url']) && $_FILES['taoresourcefile']['size'] <= 0) {
$errors['url'] = get_string('missingresource', 'taoresource');
}
// if file is uploaded - check that there was no problem
if (empty($data['url']) && $_FILES['taoresourcefile']['error'] != 0) {
// error - physical upload of file failed
$errors['taoresourcefile'] = get_string('fileuploadfailed', 'taoresource');
}
// check that this resource signature does not allready exist
if (!empty($data['url'])) {
$hash = sha1($data['url']);
$result = count_records('taoresource_entry', 'identifier', $hash) + count_records('taoresource_entry', 'url', $data['url']);
if ($result > 0) {
$errors['url'] = get_string('resourceexists', 'taoresource');
}
} else {
$tempfile = $_FILES['taoresourcefile']['tmp_name'];
$hash = taoresource_sha1file($tempfile);
$taoresource_entry->identifier = $hash;
$uri = $hash . '-' . $_FILES['taoresourcefile']['name'];
$result = count_records('taoresource_entry', 'identifier', $hash) + count_records('taoresource_entry', 'url', $uri);
if ($result > 0) {
$errors['taoresourcefile'] = get_string('resourceexists', 'taoresource');
}
}
}
// let the plugins see the form validation
$plugins = taoresource_get_plugins();
foreach ($plugins as $plugin) {
$rc = $plugin->taoresource_entry_validation($data, $files, $errors, $this->taoresource_entry_mode);
if (!$rc) {
break;
}
}
return $errors;
}
/**
* Internal method that processes the plugins for the after update
* interface.
*
* @return bool, returns true.
*/
function after_update()
{
// get the plugins
$plugins = taoresource_get_plugins();
// process each plugins before_save function - there is a default called local
foreach ($plugins as $plugin) {
// if we get a positive return then we don't use any more plugins
$rc = $plugin->after_update($this);
if (!$rc) {
break;
}
}
return true;
}