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- <?php
- /**
- * Create meta boxes for editing pages in WordPress
- * Compatible with custom post types in WordPress 3.0
- *
- * Support input types: text, textarea, checkbox, radio box, select, file, image
- *
- * @author: Rilwis
- * @url: http://www.deluxeblogtips.com/2010/04/how-to-create-meta-box-wordpress-post.html
- * @version: 2.2
- *
- * Changelog:
- * - 2.2: add enctype to post form (fix upload bug), thanks to http://www.hashbangcode.com/blog/add-enctype-wordpress-post-and-page-forms-471.html
- * - 2.1: add file upload, image upload support
- * - 2.0: oop code, support multiple post types, multiple meta boxes
- * - 1.0: procedural code
- */
- /******************************
- Edit meta box settings here
- ******************************/
- $prefix = 'dbt_';
- $meta_boxes = array();
- // first meta box
- $meta_boxes[] = array(
- 'id' => 'my-meta-box-1',
- 'title' => 'Custom meta box 1',
- 'pages' => array('post', 'page', 'link'), // multiple post types
- 'context' => 'normal',
- 'priority' => 'high',
- 'fields' => array(
- array(
- 'name' => 'Text box',
- 'desc' => 'Enter something here',
- 'id' => $prefix . 'text',
- 'type' => 'text', // text box
- 'std' => 'Default value 1'
- ),
- array(
- 'name' => 'Textarea',
- 'desc' => 'Enter big text here',
- 'id' => $prefix . 'textarea',
- 'type' => 'textarea', // text area
- 'std' => 'Default value 2'
- ),
- array(
- 'name' => 'Select box',
- 'id' => $prefix . 'select',
- 'type' => 'select', // select box
- 'options' => array('Option 1', 'Option 2', 'Option 3') // array of options for select box
- ),
- array(
- 'name' => 'Radio',
- 'id' => $prefix . 'radio',
- 'type' => 'radio', // radio box
- 'options' => array( // array of name, value pairs for radio options
- array('name' => 'Name 1', 'value' => 'Value 1'),
- array('name' => 'Name 2', 'value' => 'Value 2')
- )
- ),
- array(
- 'name' => 'Checkbox', // check box
- 'id' => $prefix . 'checkbox',
- 'type' => 'checkbox'
- )
- )
- );
- // second meta box
- $meta_boxes[] = array(
- 'id' => 'my-meta-box-1',
- 'title' => 'Custom meta box 1',
- 'pages' => array('post', 'film', 'album'), // custom post types, since WordPress 3.0
- 'context' => 'normal',
- 'priority' => 'high',
- 'fields' => array(
- array(
- 'name' => 'File upload',
- 'desc' => 'For file upload',
- 'id' => $prefix . 'file',
- 'type' => 'file' // file upload
- ),
- array(
- 'name' => 'Image upload',
- 'desc' => 'For image upload',
- 'id' => $prefix . 'image',
- 'type' => 'image' // image upload
- ),
- )
- );
- /*********************************
- You should not edit the code below
- *********************************/
- foreach ($meta_boxes as $meta_box) {
- $my_box = new My_meta_box($meta_box);
- }
- class My_meta_box {
- protected $_meta_box;
- // create meta box based on given data
- function __construct($meta_box) {
- if (!is_admin()) return;
- $this->_meta_box = $meta_box;
- // fix upload bug: http://www.hashbangcode.com/blog/add-enctype-wordpress-post-and-page-forms-471.html
- $current_page = substr(strrchr($_SERVER['PHP_SELF'], '/'), 1, -4);
- if ($current_page == 'page' || $current_page == 'page-new' || $current_page == 'post' || $current_page == 'post-new') {
- add_action('admin_head', array(&$this, 'add_post_enctype'));
- }
- add_action('admin_menu', array(&$this, 'add'));
- add_action('save_post', array(&$this, 'save'));
- }
- function add_post_enctype() {
- echo '
- <script type="text/javascript">
- jQuery(document).ready(function(){
- jQuery("#post").attr("enctype", "multipart/form-data");
- jQuery("#post").attr("encoding", "multipart/form-data");
- });
- </script>';
- }
- /// Add meta box for multiple post types
- function add() {
- foreach ($this->_meta_box['pages'] as $page) {
- add_meta_box($this->_meta_box['id'], $this->_meta_box['title'], array(&$this, 'show'), $page, $this->_meta_box['context'], $this->_meta_box['priority']);
- }
- }
- // Callback function to show fields in meta box
- function show() {
- global $post;
- // Use nonce for verification
- echo '<input type="hidden" name="mytheme_meta_box_nonce" value="', wp_create_nonce(basename(__FILE__)), '" />';
- echo '<table class="form-table">';
- foreach ($this->_meta_box['fields'] as $field) {
- // get current post meta data
- $meta = get_post_meta($post->ID, $field['id'], true);
- echo '<tr>',
- '<th style="width:20%"><label for="', $field['id'], '">', $field['name'], '</label></th>',
- '<td>';
- switch ($field['type']) {
- case 'text':
- echo '<input type="text" name="', $field['id'], '" id="', $field['id'], '" value="', $meta ? $meta : $field['std'], '" size="30" style="width:97%" />',
- '<br />', $field['desc'];
- break;
- case 'textarea':
- echo '<textarea name="', $field['id'], '" id="', $field['id'], '" cols="60" rows="4" style="width:97%">', $meta ? $meta : $field['std'], '</textarea>',
- '<br />', $field['desc'];
- break;
- case 'select':
- echo '<select name="', $field['id'], '" id="', $field['id'], '">';
- foreach ($field['options'] as $option) {
- echo '<option', $meta == $option ? ' selected="selected"' : '', '>', $option, '</option>';
- }
- echo '</select>';
- break;
- case 'radio':
- foreach ($field['options'] as $option) {
- echo '<input type="radio" name="', $field['id'], '" value="', $option['value'], '"', $meta == $option['value'] ? ' checked="checked"' : '', ' />', $option['name'];
- }
- break;
- case 'checkbox':
- echo '<input type="checkbox" name="', $field['id'], '" id="', $field['id'], '"', $meta ? ' checked="checked"' : '', ' />';
- break;
- case 'file':
- echo $meta ? "$meta<br />" : '', '<input type="file" name="', $field['id'], '" id="', $field['id'], '" />',
- '<br />', $field['desc'];
- break;
- case 'image':
- echo $meta ? "<img src=\"$meta\" width=\"150\" height=\"150\" /><br />$meta<br />" : '', '<input type="file" name="', $field['id'], '" id="', $field['id'], '" />',
- '<br />', $field['desc'];
- break;
- }
- echo '<td>',
- '</tr>';
- }
- echo '</table>';
- }
- // Save data from meta box
- function save($post_id) {
- // verify nonce
- if (!wp_verify_nonce($_POST['mytheme_meta_box_nonce'], basename(__FILE__))) {
- return $post_id;
- }
- // check autosave
- if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
- return $post_id;
- }
- // check permissions
- if ('page' == $_POST['post_type']) {
- if (!current_user_can('edit_page', $post_id)) {
- return $post_id;
- }
- } elseif (!current_user_can('edit_post', $post_id)) {
- return $post_id;
- }
- foreach ($this->_meta_box['fields'] as $field) {
- $name = $field['id'];
- $old = get_post_meta($post_id, $name, true);
- $new = $_POST[$field['id']];
- if ($field['type'] == 'file' || $field['type'] == 'image') {
- $file = wp_handle_upload($_FILES[$name], array('test_form' => false));
- $new = $file['url'];
- }
- if ($new && $new != $old) {
- update_post_meta($post_id, $name, $new);
- } elseif ('' == $new && $old && $field['type'] != 'file' && $field['type'] != 'image') {
- delete_post_meta($post_id, $name, $old);
- }
- }
- }
- }
- ?>
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