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Add wp_add_post_tags() and $append variable for wp_set_post_tags(). fixes #4109

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git-svn-id: https://develop.svn.wordpress.org/trunk@5209 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
rob1n 2007-04-07 19:00:19 +00:00
parent f429599f0f
commit e4620977f5
1 changed files with 21 additions and 12 deletions
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33
wp-includes/post.php
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@ -784,15 +784,24 @@ function wp_publish_post($post_id) {
return wp_update_post(array('post_status' => 'publish', 'ID' => $post_id, 'no_filter' => true));
}
function wp_set_post_tags( $post_id = 0, $tags = '' ) {
function wp_add_post_tags($post_id = 0, $tags = '') {
return wp_set_post_tags($post_id, $tags, true);
}
function wp_set_post_tags( $post_id = 0, $tags = '', $append = false ) {
/* $append - true = don't delete existing tags, just add on, false = replace the tags with the new tags */
global $wpdb;
$post_id = (int) $post_id;
if ( !$post_id )
return false;
$tags = explode( ',', $tags );
// prevent warnings for unintialized variables
$tag_ids = array();
$tags = (is_array($tags)) ? $tags : explode( ',', $tags );
foreach ( $tags as $tag ) {
$tag = trim( $tag );
if ( !$tag_slug = sanitize_title( $tag ) )
@ -801,27 +810,27 @@ function wp_set_post_tags( $post_id = 0, $tags = '' ) {
$tag_id = wp_create_tag( $tag );
$tag_ids[] = $tag_id;
}
if ( !is_array( $tag_ids ) )
if ( empty($tag_ids) )
return false;
$tag_ids = array_unique( $tag_ids );
// First the old tags
$old_tags = $wpdb->get_col("
SELECT category_id
FROM $wpdb->post2cat
WHERE post_id = '$post_id' AND rel_type = 'tag'");
if ( !$old_tags ) {
$old_tags = array();
} else {
$old_tags = array_unique( $old_tags );
}
// Delete any?
$delete_tags = array_diff( $old_tags, $tag_ids);
if ( $delete_tags ) {
if ( $delete_tags && !$append ) {
foreach ( $delete_tags as $del ) {
$wpdb->query("
DELETE FROM $wpdb->post2cat
@ -831,7 +840,7 @@ function wp_set_post_tags( $post_id = 0, $tags = '' ) {
");
}
}
// Add any?
$add_tags = array_diff( $tag_ids, $old_tags );
if ( $add_tags ) {
@ -843,7 +852,7 @@ function wp_set_post_tags( $post_id = 0, $tags = '' ) {
VALUES ('$post_id', '$new_tag', 'tag')");
}
}
// Update category counts.
$all_affected_tags = array_unique( array_merge( $tag_ids, $old_tags ) );
foreach ( $all_affected_tags as $tag_id ) {