';
if ( ! current_user_can('manage_categories') ) {
echo '';
echo '
' . __('Cheatin’ uh?') . '
';
echo '
';
if ( $cat_num > 0 ) {
screen_icon();
echo '' . sprintf( _n( 'Convert Category to Tag.', 'Convert Categories (%d) to Tags.', $cat_num ), $cat_num ) . '
';
echo '';
echo '
' . __('Hey there. Here you can selectively convert existing categories to tags. To get started, check the categories you wish to be converted, then click the Convert button.') . '
';
echo '
' . __('Keep in mind that if you convert a category with child categories, the children become top-level orphans.') . '
'.__('You have no categories to convert!').'
';
}
}
function categories_form() { ?>
populate_tags();
$tags_num = count($this->all_tags);
echo '
';
if ( $tags_num > 0 ) {
screen_icon();
echo '' . sprintf( _n( 'Convert Tag to Category.', 'Convert Tags (%d) to Categories.', $tags_num ), $tags_num ) . '
';
echo '';
echo '
' . __('Here you can selectively convert existing tags to categories. To get started, check the tags you wish to be converted, then click the Convert button.') . '
';
echo '
' . __('The newly created categories will still be associated with the same posts.') . '
'.__('You have no tags to convert!').'
';
}
}
function tags_form() { ?>
categories_to_convert)) { ?>
try again.'), 'admin.php?import=wp-cat2tag'); ?>
categories_to_convert) )
$this->categories_to_convert = $_POST['cats_to_convert'];
$hier = _get_term_hierarchy('category');
$hybrid_cats = $clear_parents = $parents = false;
$clean_term_cache = $clean_cat_cache = array();
$default_cat = get_option('default_category');
echo '';
foreach ( (array) $this->categories_to_convert as $cat_id) {
$cat_id = (int) $cat_id;
if ( ! $this->_category_exists($cat_id) ) {
echo '- ' . sprintf( __('Category %s doesn’t exist!'), $cat_id ) . "
\n";
} else {
$category =& get_category($cat_id);
echo '- ' . sprintf(__('Converting category %s ... '), $category->name);
// If the category is the default, leave category in place and create tag.
if ( $default_cat == $category->term_id ) {
if ( ! ($id = is_term( $category->slug, 'post_tag' ) ) )
$id = wp_insert_term($category->name, 'post_tag', array('slug' => $category->slug));
$id = $id['term_taxonomy_id'];
$posts = get_objects_in_term($category->term_id, 'category');
$term_order = 0;
foreach ( $posts as $post ) {
$values[] = $wpdb->prepare( "(%d, %d, %d)", $post, $id, $term_order);
clean_post_cache($post);
}
if ( $values ) {
$wpdb->query("INSERT INTO $wpdb->term_relationships (object_id, term_taxonomy_id, term_order) VALUES " . join(',', $values) . " ON DUPLICATE KEY UPDATE term_order = VALUES(term_order)");
$wpdb->query( $wpdb->prepare("UPDATE $wpdb->term_taxonomy SET count = %d WHERE term_id = %d AND taxonomy = 'post_tag'", $category->count, $category->term_id) );
}
echo __('Converted successfully.') . "
\n";
continue;
}
// if tag already exists, add it to all posts in the category
if ( $tag_ttid = $wpdb->get_var( $wpdb->prepare("SELECT term_taxonomy_id FROM $wpdb->term_taxonomy WHERE term_id = %d AND taxonomy = 'post_tag'", $category->term_id) ) ) {
$objects_ids = get_objects_in_term($category->term_id, 'category');
$tag_ttid = (int) $tag_ttid;
$term_order = 0;
foreach ( $objects_ids as $object_id )
$values[] = $wpdb->prepare( "(%d, %d, %d)", $object_id, $tag_ttid, $term_order);
if ( $values ) {
$wpdb->query("INSERT INTO $wpdb->term_relationships (object_id, term_taxonomy_id, term_order) VALUES " . join(',', $values) . " ON DUPLICATE KEY UPDATE term_order = VALUES(term_order)");
$count = $wpdb->get_var( $wpdb->prepare("SELECT COUNT(*) FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $tag_ttid) );
$wpdb->query( $wpdb->prepare("UPDATE $wpdb->term_taxonomy SET count = %d WHERE term_id = %d AND taxonomy = 'post_tag'", $count, $category->term_id) );
}
echo __('Tag added to all posts in this category.') . " *\n";
$hybrid_cats = true;
$clean_term_cache[] = $category->term_id;
$clean_cat_cache[] = $category->term_id;
continue;
}
$tt_ids = $wpdb->get_col( $wpdb->prepare("SELECT term_taxonomy_id FROM $wpdb->term_taxonomy WHERE term_id = %d AND taxonomy = 'category'", $category->term_id) );
if ( $tt_ids ) {
$posts = $wpdb->get_col("SELECT object_id FROM $wpdb->term_relationships WHERE term_taxonomy_id IN (" . join(',', $tt_ids) . ") GROUP BY object_id");
foreach ( (array) $posts as $post )
clean_post_cache($post);
}
// Change the category to a tag.
$wpdb->query( $wpdb->prepare("UPDATE $wpdb->term_taxonomy SET taxonomy = 'post_tag' WHERE term_id = %d AND taxonomy = 'category'", $category->term_id) );
// Set all parents to 0 (root-level) if their parent was the converted tag
$parents = $wpdb->query( $wpdb->prepare("UPDATE $wpdb->term_taxonomy SET parent = 0 WHERE parent = %d AND taxonomy = 'category'", $category->term_id) );
if ( $parents ) $clear_parents = true;
$clean_cat_cache[] = $category->term_id;
echo __('Converted successfully.') . "\n";
}
}
echo '
';
if ( ! empty($clean_term_cache) ) {
$clean_term_cache = array_unique(array_values($clean_term_cache));
clean_term_cache($clean_term_cache, 'post_tag');
}
if ( ! empty($clean_cat_cache) ) {
$clean_cat_cache = array_unique(array_values($clean_cat_cache));
clean_term_cache($clean_cat_cache, 'category');
}
if ( $clear_parents ) delete_option('category_children');
if ( $hybrid_cats )
echo '' . sprintf( __('* This category is also a tag. The converter has added that tag to all posts currently in the category. If you want to remove it, please confirm that all tags were added successfully, then delete it from the Manage Categories page.'), 'categories.php') . '
';
echo '' . sprintf( __('We’re all done here, but you can always convert more.'), 'admin.php?import=wp-cat2tag' ) . '
';
}
function convert_tags() {
global $wpdb;
if ( (!isset($_POST['tags_to_convert']) || !is_array($_POST['tags_to_convert'])) && empty($this->tags_to_convert)) {
echo '';
echo '
' . sprintf(__('Uh, oh. Something didn’t work. Please try again.'), 'admin.php?import=wp-cat2tag&step=3') . '
';
echo '
';
foreach ( (array) $this->tags_to_convert as $tag_id) {
$tag_id = (int) $tag_id;
if ( $tag = get_term( $tag_id, 'post_tag' ) ) {
printf('- ' . __('Converting tag %s ... '), $tag->name);
if ( $cat_ttid = $wpdb->get_var( $wpdb->prepare("SELECT term_taxonomy_id FROM $wpdb->term_taxonomy WHERE term_id = %d AND taxonomy = 'category'", $tag->term_id) ) ) {
$objects_ids = get_objects_in_term($tag->term_id, 'post_tag');
$cat_ttid = (int) $cat_ttid;
$term_order = 0;
foreach ( $objects_ids as $object_id ) {
$values[] = $wpdb->prepare( "(%d, %d, %d)", $object_id, $cat_ttid, $term_order);
clean_post_cache($object_id);
}
if ( $values ) {
$wpdb->query("INSERT INTO $wpdb->term_relationships (object_id, term_taxonomy_id, term_order) VALUES " . join(',', $values) . " ON DUPLICATE KEY UPDATE term_order = VALUES(term_order)");
if ( $default_cat != $tag->term_id ) {
$count = $wpdb->get_var( $wpdb->prepare("SELECT COUNT(*) FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $tag->term_id) );
$wpdb->query( $wpdb->prepare("UPDATE $wpdb->term_taxonomy SET count = %d WHERE term_id = %d AND taxonomy = 'category'", $count, $tag->term_id) );
}
}
$hybrid_tags = true;
$clean_term_cache[] = $tag->term_id;
$clean_cat_cache[] = $tag->term_id;
echo __('All posts were added to the category with the same name.') . " *
\n";
continue;
}
// Change the tag to a category.
$parent = $wpdb->get_var( $wpdb->prepare("SELECT parent FROM $wpdb->term_taxonomy WHERE term_id = %d AND taxonomy = 'post_tag'", $tag->term_id) );
if ( 0 == $parent || (0 < (int) $parent && $this->_category_exists($parent)) ) {
$reset_parent = '';
$clear_parents = true;
} else
$reset_parent = ", parent = '0'";
$wpdb->query( $wpdb->prepare("UPDATE $wpdb->term_taxonomy SET taxonomy = 'category' $reset_parent WHERE term_id = %d AND taxonomy = 'post_tag'", $tag->term_id) );
$clean_term_cache[] = $tag->term_id;
$clean_cat_cache[] = $cat['term_id'];
echo __('Converted successfully.') . "\n";
} else {
printf( '- ' . __('Tag #%s doesn’t exist!') . "
\n", $tag_id );
}
}
if ( ! empty($clean_term_cache) ) {
$clean_term_cache = array_unique(array_values($clean_term_cache));
clean_term_cache($clean_term_cache, 'post_tag');
}
if ( ! empty($clean_cat_cache) ) {
$clean_cat_cache = array_unique(array_values($clean_cat_cache));
clean_term_cache($clean_term_cache, 'category');
}
if ( $clear_parents ) delete_option('category_children');
echo '
';
if ( $hybrid_tags )
echo '' . sprintf( __('* This tag is also a category. The converter has added all posts from it to the category. If you want to remove it, please confirm that all posts were added successfully, then delete it from the Manage Tags page.'), 'edit-tags.php') . '
';
echo '' . sprintf( __('We’re all done here, but you can always convert more.'), 'admin.php?import=wp-cat2tag&step=3' ) . '
';
}
function init() {
$step = (isset($_GET['step'])) ? (int) $_GET['step'] : 1;
$this->header();
if ( current_user_can('manage_categories') ) {
switch ($step) {
case 1 :
$this->categories_tab();
break;
case 2 :
check_admin_referer('import-cat2tag');
$this->convert_categories();
break;
case 3 :
$this->tags_tab();
break;
case 4 :
check_admin_referer('import-cat2tag');
$this->convert_tags();
break;
}
}
$this->footer();
}
function WP_Categories_to_Tags() {
// Do nothing.
}
}
$wp_cat2tag_importer = new WP_Categories_to_Tags();
register_importer('wp-cat2tag', __('Categories and Tags Converter'), __('Convert existing categories to tags or tags to categories, selectively.'), array(&$wp_cat2tag_importer, 'init'));
?>