Ooyala::ajax_get_image_id PHP Method

    function ajax_get_image_id()
    {
        if (!$this->configured()) {
            $this->ajax_error(__('Plugin not configured', 'ooyala'));
        }
        // check nonce
        $this->ajax_check();
        $post_id = (int) filter_input(INPUT_POST, 'post_id', FILTER_VALIDATE_INT);
        $url = filter_input(INPUT_POST, 'image_url', FILTER_SANITIZE_URL);
        // sanity check inputs
        if (empty($url)) {
            $this->ajax_error(__('No image URL given', 'ooyala'));
        }
        // First check that we haven't already downloaded this image.
        $existing_id = $this->get_attachment_id($url);
        $this->ajax_success(__('Found attachment ID', 'ooyala'), array('id' => $existing_id));
    }