/**
* Validate video URL.
*/
public function validateInput(&$element, FormStateInterface &$form_state, $form)
{
$input = $element['#value'];
$video_id = youtube_get_video_id($input);
if ($video_id && strlen($video_id) <= 20) {
$video_id_element = array('#parents' => $element['#parents']);
array_pop($video_id_element['#parents']);
$video_id_element['#parents'][] = 'video_id';
$form_state->setValueForElement($video_id_element, $video_id);
} elseif (!empty($input)) {
$form_state->setError($element, t('Please provide a valid YouTube URL.'));
}
}
function youtube_get_image_attachment($url)
{
$video_id = youtube_get_video_id($url);
if (!$video_id) {
return false;
}
$video_image_option = 'youtube-image-' . $video_id;
// Return the image that has already been uploaded for this video ID
if ($v = get_option($video_image_option)) {
if (isset($v['attachment_id']) && get_post((int) $v['attachment_id'])) {
return $v;
}
}
$image_url = 'http://img.youtube.com/vi/' . $video_id . '/0.jpg';
$attachment = ld_handle_upload_from_url($image_url);
if (!empty($attachment['attachment_id'])) {
update_option($video_image_option, $attachment, false);
return $attachment;
}
return false;
}