Help with custom post type 'Marketplace Items' setup WordPress

Pippin Williamson answers:

Looks like you've just about gotten everything you need except the custom meta, so here's the complete custom meta function(s) for you :)


/* CSUTOM META BOX */

$prefix = 'mi_';

$meta_box = array(
'id' => 'marketplace-meta',
'title' => 'Item Information',
'page' => 'Marketplace', // replace this with your post type name
'context' => 'normal',
'priority' => 'high',
'fields' => array(
array(
'name' => 'Member Name',
'id' => $prefix . 'member',
'type' => 'text',
'desc' => 'Member name',
),
array(
'name' => 'Retailer Name',
'id' => $prefix . 'retail_name',
'type' => 'text',
'desc' => 'Retailer name',
),
array(
'name' => 'Manufacturer Name',
'id' => $prefix . 'manufacturer',
'type' => 'text',
'desc' => 'Manufacturer name',
),
array(
'name' => 'Retail Price',
'id' => $prefix . 'price',
'type' => 'text',
'desc' => 'Retail Price',
),
array(
'name' => 'Image URL',
'id' => $prefix . 'image',
'type' => 'text',
'desc' => 'Image URL',
),
array(
'name' => 'Buy Now URL',
'id' => $prefix . 'buy_now',
'type' => 'text',
'desc' => 'Buy Now URL',
),
)
);

add_action('admin_menu', 'custom_meta_add_box');
function custom_meta_add_box() {
global $meta_box;

add_meta_box($meta_box['id'], $meta_box['title'], 'custom_meta_show_box', $meta_box['page'], $meta_box['context'], $meta_box['priority']);
}

// Callback function to show fields in meta box
function custom_meta_show_box() {
global $meta_box, $post;

// Use nonce for verification
echo '<input type="hidden" name="custom_meta_meta_box_nonce" value="', wp_create_nonce(basename(__FILE__)), '" />';

echo '<table class="form-table">';

foreach ($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%" />', '
', $field['desc'];
break;
case 'textarea':
echo '<textarea name="', $field['id'], '" id="', $field['id'], '" cols="60" rows="8" style="width:97%">', $meta ? $meta : $field['std'], '</textarea>', '
', $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;
}
echo '<td>',
'</tr>';
}

echo '</table>';
}
add_action('save_post', 'custom_meta_save_data');

// Save data from meta box
function custom_meta_save_data($post_id) {
global $meta_box;

// verify nonce
if (!wp_verify_nonce($_POST['custom_meta_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 ($meta_box['fields'] as $field) {
$old = get_post_meta($post_id, $field['id'], true);
$new = $_POST[$field['id']];

if ($new && $new != $old) {
update_post_meta($post_id, $field['id'], $new);
} elseif ('' == $new && $old) {
delete_post_meta($post_id, $field['id'], $old);
}
}
}


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