custom fields and custom meta boxes

*bump*

Hi tjsix,

Thanks for your reply. Yeah really I’d like to have the custom meta boxes just on regular posts, I already know how to do it when declaring a custom post type, I just didn’t know how to go about doing it for regular posts.

Is there a way I can have it load a different form (with different meta boxes) dependent on whether it’s a post or a page? Or am I stuck with the same form on both forms and pages?

Cheers,
Rab

Hi tjsix,

I’ve taken your code above and put it in it’s own file and included that file in functions.php. It returned an error when I went to post.php saying there was an extra } at the end so I’ve removed it.

Here’s the code as it is now:

<?php
/**
* This file handles the custom meta boxes found on posts (and pages once I've worked them into it).
*/

// Put all your arguments and details in the array. Example:
$meta_boxes = array(
	"background_image" => array(
		"name" => "background_image",
		"title" => "Page Background Image",
		"type" => "text",
		"description" => "A background image for the page."
	)
);

// Hook into the admin_menu
add_action('admin_menu', 'create_meta_box');
function create_meta_box() {
	add_meta_box( 'meta-box-id', 'The Title', 'display_meta_box', 'post', 'normal', 'high' );
}

// Display the meta_boxes
function display_meta_box($meta_boxes) {
	$data = get_post_meta($post->ID, $key, true);
	?><div class="form_wrap">
		<?php foreach($meta_boxes as $meta_box) { ?>
		<div class="form_field">
			<label for="<?php echo $meta_box['name']; ?>"><?php echo $meta_box['title']; ?></label>
			<input type="text" name="<?php echo $meta_box['name']; ?>" value="<?php echo htmlspecialchars( $data[$meta_box['name']] ); ?>" />
			<p><?php echo $meta_box[ 'description' ]; ?></p>
		</div>
		<?php } ?>
	</div>
<?php }

// Function to save your fields
add_action('save_post', 'save_meta_box');
function save_meta_box( $post_id ) {
	global $post;
	foreach( $meta_boxes as $meta_box ) {
		$data[ $meta_box[ 'name' ] ] = $_POST[ $meta_box[ 'name' ] ];
	}

	//Make sure the POST info came from WP.
	if ( !wp_verify_nonce( $_POST[ $key . '_wpnonce' ], plugin_basename(__FILE__) ) ) return $post_id;

	if ( !current_user_can( 'edit_post', $post_id )) return $post_id;

	update_post_meta( $post_id, $key, $data );
}

?>

It’s done something very strange when the page is displayed, have a look here: http://www.rsimpson.net/strange-meta-behaviour.gif

Have you ever seen this before?

Cheers,
Rab

Thanks for your efforts tjsix but I just couldn’t work it out.

I followed this tutorial (http://webdesignfan.com/custom-write-panels-in-wordpress/) which I had working up until I tried to get it working with both ‘post’ and ‘page’ post types.

Everything works up until I try to save the post. It seems $meta_box[‘fields’] isn’t being submitted and I can’t work out why. I haven’t touched the code within the function at the bottom. Here’s my code: http://pastebin.com/q1e7iKkN

Does anyone have any ideas where I’m messing up?

Cheers,
Rab

Yup it comes back with this:

Warning: Invalid argument supplied for foreach() in /path/wp-content/themes/theme/functions/custom-meta-boxes.php on line 179

Warning: Invalid argument supplied for foreach() in /path/wp-content/themes/theme/functions/custom-meta-boxes.php on line 179

Warning: Cannot modify header information - headers already sent by (output started at /path/wp-content/themes/theme/functions/custom-meta-boxes.php:179) in /path/wp-includes/pluggable.php on line 897

If I var_dump the array (you can see it commented out in the code) it returns NULL.

Cheers,
Rab