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- <?php
- // Add the Meta Box
- function add_custom_meta_box() {
- add_meta_box(
- 'custom_meta_box', // $id
- 'Custom Meta Box', // $title
- 'show_custom_meta_box', // $callback
- 'products', // $page
- 'normal', // $context
- 'high'); // $priority
- }
- add_action('add_meta_boxes', 'add_custom_meta_box');
- // Field Array
- $prefix = 'custom_';
- $custom_meta_fields = array(
- array(
- 'label' => 'Category',
- 'id' => 'category',
- 'type' => 'tax_checkbox'
- ) );
- // The Callback
- function show_custom_meta_box() {
- global $custom_meta_fields, $post;
- // Use nonce for verification
- echo '<input type="hidden" name="custom_meta_box_nonce" value="'.wp_create_nonce(basename(__FILE__)).'" />';
- // Begin the field table and loop
- echo '<table class="form-table">';
- foreach ($custom_meta_fields as $field) {
- // get value of this field if it exists for this post
- $meta = get_post_meta($post->ID, $field['id'], true);
- // begin a table row with
- echo '<tr>
- <th><label for="'.$field['id'].'">'.$field['label'].'</label></th>
- <td>';
- switch($field['type']) {
- case 'tax_checkbox':
- $terms = get_terms($field['id'],'get=all' );
- $post_terms = wp_get_object_terms( get_the_ID(), $field['id'] );
- $taxonomy = get_taxonomy( $field['id'] );
- $checked = $post_terms ? $taxonomy->hierarchical ? $post_terms[0]->term_id : $post_terms[0]->slug : null;
- foreach ( $terms as $term ) {
- $term_value = $taxonomy->hierarchical ? $term->term_id : $term->slug;
- echo '<input type="checkbox" value="' . $term_value . '" name="' . $field['id'] . '[]" id="term-' . $term_value . '"' . checked( $checked, $term_value, false ) . ' /> <label for="term-' . $term_value . '">' . $term->name . '</label><br />';
- }
- echo '<span class="description">' . $field['desc'] . ' <a href="'.get_bloginfo( 'url' ) . '/wp-admin/edit-tags.php?taxonomy=' . $field['id'] . '&post_type=' . $page . '">Manage ' . $taxonomy->label . '</a></span>';
- break;
- } //end switch
- echo '</td></tr>';
- } // end foreach
- echo '</table>'; // end table
- }
- // Save the Data
- function save_custom_meta($post_id) {
- global $custom_meta_fields;
- // verify nonce
- if (!wp_verify_nonce($_POST['custom_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 $post_id;
- }
- // loop through fields and save the data
- foreach ($custom_meta_fields as $field) {
- if($field['type'] == 'tax_select') continue;
- if( in_array( $field['type'], array( 'tax_checkboxes' ) ) ) {
- // save taxonomies
- if ( isset( $_POST[$field['id']] ) ) {
- $term = $_POST[$field['id']];
- wp_set_object_terms( $post_id, $term, $field['id'] );
- }
- }
- else {
- $old = get_post_meta($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);
- }
- } } // end foreach
- // save taxonomies
- $post = get_post($post_id);
- $category = $_POST['category'];
- wp_set_object_terms( $post_id, $category, 'category' );
- }
- add_action('save_post', 'save_custom_meta');
- ?>
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