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// 增加 markdown 功能到后台编辑器
add_action( 'admin_menu', 'create_markdown' );
add_action( 'save_post', 'save_markdown', 10, 2 );
function create_markdown() {
add_meta_box( 'markdown_box', 'Markdown', 'markdown_html', 'post', 'normal', 'high' );
}
function markdown_html( $object, $box ) { ?>
<textarea name="markdown" id="markdown" cols="60" oninput ="markdownEditorChanged()" rows="50" style="width: 100%; height:100%"><?php echo htmlspecialchars (get_post_meta( $object->ID, 'markdown', true )); ?></textarea>
<?php }
function save_markdown( $post_id, $post ) {
if ( !current_user_can( 'edit_post', $post_id ) )
return $post_id;
$meta_value = get_post_meta( $post_id, 'markdown', true );
$new_meta_value = $_POST['markdown'];
if ( $new_meta_value && '' == $meta_value )
add_post_meta( $post_id, 'markdown', $new_meta_value, true );
elseif ( $new_meta_value != $meta_value )
update_post_meta( $post_id, 'markdown', $new_meta_value );
elseif ( '' == $new_meta_value && $meta_value )
delete_post_meta( $post_id, 'markdown', $meta_value );
}
function markdown_script() {
wp_enqueue_script('markdown', get_template_directory_uri() . '/js/marked.js' );
wp_enqueue_script('makemarkdown', get_template_directory_uri() . '/js/makemarkdown.js');
}
add_action( 'admin_enqueue_scripts', 'markdown_script');
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