/**
* Get content of uploaded file.
* @param $element name of file upload element
* @return mixed false in case of failure, string if ok
*/
function get_file_content($elname)
{
global $USER;
if (!$this->is_submitted() or !$this->is_validated()) {
return false;
}
$element = $this->_form->getElement($elname);
if ($element instanceof MoodleQuickForm_filepicker) {
$values = $this->_form->exportValues($elname);
if (empty($values[$elname])) {
return false;
}
$draftid = $values[$elname];
$fs = get_file_storage();
$context = get_context_instance(CONTEXT_USER, $USER->id);
if (!($files = $fs->get_area_files($context->id, 'user_draft', $draftid, 'id DESC', false))) {
return false;
}
$file = reset($files);
return $file->get_content();
} else {
if (isset($_FILES[$elname])) {
return file_get_contents($_FILES[$elname]['tmp_name']);
}
}
return false;
}
/**
* Returns 'safe' elements' values
*
* @param mixed Array/string of element names, whose values we want. If not set then return all elements.
* @param bool Whether to remove internal (_qf_...) values from the resultant array
*/
function exportValues($elementList = null, $filterInternal = false)
{
$values = parent::exportValues($elementList);
if ($filterInternal) {
foreach (array_keys($values) as $key) {
if (0 === strpos($key, '_qf_')) {
unset($values[$key]);
}
}
}
return $values;
}
