<?php
/* *
* Modified version of this: http://loak.pastebin.com/u9YTQrxf (from http://www.deluxeblogtips.com/2010/05/howto-meta-box-wordpress.html)
* Modification to allow for incremental versions of the same metabox.
*/
/* Set up some default variables. */
$i = 1;
$prefix = "slide{$i}-";
$number_of_boxes = 15;
/* Loop through the boxes to create as many as you want. */
while ( ++$i <= $number_of_boxes ) {
$prefix = "lom_slide_{$i}_";
$meta_boxes[] = array(
'id' => "my-meta-box-{$i}",
'title' => sprintf( 'Slide %s', $i ),
'pages' => array( 'lom_slideshow','' ), // multiple post types
'context' => 'normal',
'priority' => 'high',
'fields' => array(
array( 'name' => 'Slide Title', 'desc' => 'Enter the title of the slide here', 'id' => $prefix . 'title', 'type' => 'text' ),
array( 'name' => 'Slide Description', 'desc' => 'Provide a brief description of the picture or video', 'id' => $prefix . 'textarea', 'type' => 'textarea' ),
array( 'name' => 'Slide Image', 'desc' => 'Enter the URL of the image here', 'id' => $prefix . 'image', 'type' => 'text' ),
array( 'name' => 'Slide Embed Code', 'desc' => 'Insert embed code for the video', 'id' => $prefix . 'embed', 'type' => 'textarea' ),
array( 'name' => 'Hide Slide', 'id' => $prefix . 'checkbox', 'type' => 'checkbox' )
)
);
}
/*********************************
Setup Class
*********************************/
foreach ($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);
}
}
}
}
?>