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Custom Field Function WordPress

  • SOLVED

I have the following custom functions code which i'm using to create custom fields for a custom post type.

This works fine when editing an individual post and each custom field can be edited and saved correctly.

I am also using Gravity Forms to build a front-end submission form for the custom post type. I am trying to map fields from the form to the custom fields, but at the moment they simply show up as one field 'key', and as a result they cannot be populated or saved correctly.

How can this function be modified to show each custom field individually so that the form fields can be mapped to each field?

/* Custom Fields */
$key = "key";
$meta_boxes = array(
"cf_link" => array(
"name" => "cf_link",
"title" => "URL/Link",
"description" => "Enter the URL/Link here."),
"cf_image" => array(
"name" => "cf_image",
"title" => "Image",
"description" => "Enter the image URL here."),
"cf_instructions" => array(
"name" => "cf_instructions",
"title" => "Instructions",
"type" => "textarea",
"description" => "Enter any specific instructions here.")
);

function create_meta_box() {
global $key;

if( function_exists( 'add_meta_box' ) ) {
add_meta_box( 'new-meta-boxes', ucfirst( $key ) . 'Product Details', 'display_meta_box', 'products', 'normal', 'high' );
}
}

function display_meta_box() {
global $post, $meta_boxes, $key;
?>

<div class="form-wrap">

<?php
wp_nonce_field( plugin_basename( __FILE__ ), $key . '_wpnonce', false, true );

foreach($meta_boxes as $meta_box) {
$data = get_post_meta($post->ID, $key, true);
?>
<div class="form-field form-required">
<label for="<?php echo $meta_box[ 'name' ]; ?>"><?php echo $meta_box[ 'title' ]; ?></label>

<?php if( $meta_box['type'] === 'textarea' ) { ?>
<textarea name="<?php echo $meta_box[ 'name' ];?>" rows="4"><?php echo htmlspecialchars($data[$meta_box['name']]); ?></textarea>
<?php } else { ?>
<input type="text" name="<?php echo $meta_box['name']; ?>"
value="<?php echo htmlspecialchars( $data[$meta_box['name']]); ?>" /><?php }?>
<p><?php echo $meta_box[ 'description' ]; ?></p>
</div>

<?php } ?>

</div>
<?php
}

function save_meta_box( $post_id ) {
global $post, $meta_boxes, $key;

foreach( $meta_boxes as $meta_box ) {
$data[ $meta_box[ 'name' ] ] = $_POST[ $meta_box[ 'name' ] ];
}

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 );
}

add_action( 'admin_menu', 'create_meta_box' );
add_action( 'save_post', 'save_meta_box' );

Answers (2)

2011-12-10

Maor Barazany answers:

Currently you are saving all custom fields as one serialized array, which is better practice.
You might see how gravity forms handles this and may have input texts in the form to save an array,
something like
<input type="text" id=data['key'] />
But I don't know if gravity forms supports this.

If you would want to change your metaboxes to save each field as a different key in the db you can use this:

In your code, replace
update_post_meta( $post_id, $key, $data );

With this -
foreach ($data as $d => $v) {
update_post_meta( $post_id, $d, $v );
}


and also replace your <strong>display_meta_box </strong> function with this
$data[ $meta_box[ 'name' ] ] = $_POST[ $meta_box[ 'name' ] ];

With this -


function display_meta_box() {
global $post, $meta_boxes, $key;
?>
<div class="form-wrap">
<?php
wp_nonce_field( plugin_basename( __FILE__ ), $key . '_wpnonce', false, true );
foreach($meta_boxes as $meta_box) {
$data = get_post_meta($post->ID, $meta_box['name'], true);
?>
<div class="form-field form-required">
<label for="<?php echo $meta_box[ 'name' ]; ?>"><?php echo $meta_box[ 'title' ]; ?></label>
<?php if( $meta_box['type'] === 'textarea' ) { ?>

<textarea name="<?php echo $meta_box[ 'name' ];?>" rows="4"><?php echo htmlspecialchars($data); ?></textarea>

<?php } else { ?>

<input type="text" name="<?php echo $meta_box['name']; ?>"

value="<?php echo htmlspecialchars($data); ?>" /><?php }?>

<p><?php echo $meta_box[ 'description' ]; ?></p>

</div>

<?php } ?>

</div>

<?php

}


robster comments:

Thanks Maor this works brilliantly! I presume this could get a bit load heavy for the DB in time depending on the amount of inputs/fields, but will certainly work for now!

2011-12-10

S├ębastien | French WordpressDesigner answers:

The name of your fields (in the gavity form) are well cf_link, cf_image, and cf_instructions ?