functions.php

add_filter("gform_tabindex_1", create_function("", "return 4;"));


add_filter('gform_field_value_author_email', 'populate_post_author_email');
function populate_post_author_email($value){
    global $post;

    $author_email = get_the_author_meta('email', $post->post_author);

    return $author_email;
}

add_filter('gform_field_value_titel', 'gform_prepopulate_titel');
function gform_prepopulate_titel($value)
{
    global $post;
    return get_post_meta($post->ID, 'title', true);
} // end gform_prepopulate_titel


add_filter('gform_field_value_auteur', 'gform_prepopulate_auteur');
function gform_prepopulate_auteur($value)
{
    global $post;
    return get_post_meta($post->ID, 'author', true);
} // end gform_prepopulate_auteur

add_filter('gform_field_value_isbn', 'gform_prepopulate_isbn');
function gform_prepopulate_isbn($value)
{
    global $post;
    return get_post_meta($post->ID, 'isbn', true);
} // end gform_prepopulate_isbn

add_filter('gform_field_value_format', 'gform_prepopulate_format');
function gform_prepopulate_format($value)
{
    global $post;
    return get_post_meta($post->ID, 'format', true);
} // end gform_prepopulate_format