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Taxonomy: Make some adjustments to handling default terms for custom taxonomies:

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* Move default term assignment from `wp_set_object_terms()` to `wp_insert_post()`.
* Make sure the passed taxonomy list overwrites the existing list if not empty.
* Remove the default term option on `unregister_taxonomy()`.
* Prevent deletion of the default term in `wp_delete_term()`.

Props enrico.sorcinelli, TimothyBlynJacobs.
See #43517.

git-svn-id: https://develop.svn.wordpress.org/trunk@48480 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Sergey Biryukov
2020-07-14 16:39:44 +00:00
parent 9181ecff85
commit c843cf19c3
3 changed files with 46 additions and 11 deletions
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src/wp-includes/post.php
+20 -2
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@@ -4036,8 +4036,26 @@ function wp_insert_post( $postarr, $wp_error = false ) {
// Add default term for all associated custom taxonomies.
if ( 'auto-draft' !== $post_status ) {
foreach ( get_object_taxonomies( $post_type, 'object' ) as $taxonomy => $tax_object ) {
if ( ! empty( $tax_object->default_term ) && ( empty( $postarr['tax_input'] ) || ! isset( $postarr['tax_input'][ $taxonomy ] ) ) ) {
$postarr['tax_input'][ $taxonomy ] = array();
if ( ! empty( $tax_object->default_term ) ) {
// Filter out empty terms.
if ( isset( $postarr['tax_input'] ) && is_array( $postarr['tax_input'][ $taxonomy ] ) ) {
$postarr['tax_input'][ $taxonomy ] = array_filter( $postarr['tax_input'][ $taxonomy ] );
}
// Passed custom taxonomy list overwrites existing list if not empty.
$terms = wp_get_object_terms( $post_ID, $taxonomy, array( 'fields' => 'ids' ) );
if ( ! empty( $terms ) && empty( $postarr['tax_input'][ $taxonomy ] ) ) {
$postarr['tax_input'][ $taxonomy ] = $terms;
}
if ( empty( $postarr['tax_input'][ $taxonomy ] ) ) {
$default_term_id = get_option( 'default_taxonomy_' . $taxonomy );
if ( ! empty( $default_term_id ) ) {
$postarr['tax_input'][ $taxonomy ] = array( (int) $default_term_id );
}
}
}
}
}