317 lines
8.2 KiB
PHP
317 lines
8.2 KiB
PHP
<?php
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/**
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* WordPress Taxonomy Administration API.
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*
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* @package WordPress
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* @subpackage Administration
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*/
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//
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// Category.
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//
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/**
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* Checks whether a category exists.
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*
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* @since 2.0.0
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*
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* @see term_exists()
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*
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* @param int|string $cat_name Category name.
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* @param int $category_parent Optional. ID of parent category.
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* @return string|null Returns the category ID as a numeric string if the pairing exists, null if not.
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*/
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function category_exists( $cat_name, $category_parent = null ) {
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$id = term_exists( $cat_name, 'category', $category_parent );
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if ( is_array( $id ) ) {
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$id = $id['term_id'];
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}
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return $id;
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}
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/**
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* Gets category object for given ID and 'edit' filter context.
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*
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* @since 2.0.0
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*
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* @param int $id
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* @return object
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*/
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function get_category_to_edit( $id ) {
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$category = get_term( $id, 'category', OBJECT, 'edit' );
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_make_cat_compat( $category );
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return $category;
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}
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/**
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* Adds a new category to the database if it does not already exist.
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*
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* @since 2.0.0
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*
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* @param int|string $cat_name Category name.
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* @param int $category_parent Optional. ID of parent category.
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* @return int|WP_Error
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*/
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function wp_create_category( $cat_name, $category_parent = 0 ) {
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$id = category_exists( $cat_name, $category_parent );
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if ( $id ) {
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return $id;
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}
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return wp_insert_category(
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array(
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'cat_name' => $cat_name,
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'category_parent' => $category_parent,
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)
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);
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}
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/**
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* Creates categories for the given post.
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*
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* @since 2.0.0
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*
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* @param string[] $categories Array of category names to create.
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* @param int $post_id Optional. The post ID. Default empty.
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* @return int[] Array of IDs of categories assigned to the given post.
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*/
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function wp_create_categories( $categories, $post_id = '' ) {
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$cat_ids = array();
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foreach ( $categories as $category ) {
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$id = category_exists( $category );
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if ( $id ) {
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$cat_ids[] = $id;
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} else {
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$id = wp_create_category( $category );
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if ( $id ) {
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$cat_ids[] = $id;
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}
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}
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}
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if ( $post_id ) {
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wp_set_post_categories( $post_id, $cat_ids );
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}
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return $cat_ids;
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}
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/**
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* Updates an existing Category or creates a new Category.
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*
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* @since 2.0.0
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* @since 2.5.0 $wp_error parameter was added.
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* @since 3.0.0 The 'taxonomy' argument was added.
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*
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* @param array $catarr {
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* Array of arguments for inserting a new category.
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*
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* @type int $cat_ID Category ID. A non-zero value updates an existing category.
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* Default 0.
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* @type string $taxonomy Taxonomy slug. Default 'category'.
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* @type string $cat_name Category name. Default empty.
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* @type string $category_description Category description. Default empty.
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* @type string $category_nicename Category nice (display) name. Default empty.
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* @type int|string $category_parent Category parent ID. Default empty.
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* }
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* @param bool $wp_error Optional. Default false.
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* @return int|WP_Error The ID number of the new or updated Category on success. Zero or a WP_Error on failure,
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* depending on param `$wp_error`.
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*/
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function wp_insert_category( $catarr, $wp_error = false ) {
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$cat_defaults = array(
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'cat_ID' => 0,
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'taxonomy' => 'category',
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'cat_name' => '',
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'category_description' => '',
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'category_nicename' => '',
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'category_parent' => '',
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);
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$catarr = wp_parse_args( $catarr, $cat_defaults );
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if ( '' === trim( $catarr['cat_name'] ) ) {
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if ( ! $wp_error ) {
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return 0;
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} else {
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return new WP_Error( 'cat_name', __( 'You did not enter a category name.' ) );
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}
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}
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$catarr['cat_ID'] = (int) $catarr['cat_ID'];
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// Are we updating or creating?
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$update = ! empty( $catarr['cat_ID'] );
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$name = $catarr['cat_name'];
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$description = $catarr['category_description'];
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$slug = $catarr['category_nicename'];
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$parent = (int) $catarr['category_parent'];
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if ( $parent < 0 ) {
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$parent = 0;
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}
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if ( empty( $parent )
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|| ! term_exists( $parent, $catarr['taxonomy'] )
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|| ( $catarr['cat_ID'] && term_is_ancestor_of( $catarr['cat_ID'], $parent, $catarr['taxonomy'] ) ) ) {
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$parent = 0;
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}
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$args = compact( 'name', 'slug', 'parent', 'description' );
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if ( $update ) {
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$catarr['cat_ID'] = wp_update_term( $catarr['cat_ID'], $catarr['taxonomy'], $args );
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} else {
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$catarr['cat_ID'] = wp_insert_term( $catarr['cat_name'], $catarr['taxonomy'], $args );
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}
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if ( is_wp_error( $catarr['cat_ID'] ) ) {
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if ( $wp_error ) {
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return $catarr['cat_ID'];
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} else {
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return 0;
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}
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}
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return $catarr['cat_ID']['term_id'];
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}
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/**
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* Aliases wp_insert_category() with minimal args.
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*
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* If you want to update only some fields of an existing category, call this
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* function with only the new values set inside $catarr.
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*
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* @since 2.0.0
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*
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* @param array $catarr The 'cat_ID' value is required. All other keys are optional.
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* @return int|false The ID number of the new or updated Category on success. Zero or FALSE on failure.
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*/
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function wp_update_category( $catarr ) {
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$cat_id = (int) $catarr['cat_ID'];
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if ( isset( $catarr['category_parent'] ) && ( $cat_id === (int) $catarr['category_parent'] ) ) {
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return false;
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}
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// First, get all of the original fields.
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$category = get_term( $cat_id, 'category', ARRAY_A );
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_make_cat_compat( $category );
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// Escape data pulled from DB.
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$category = wp_slash( $category );
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// Merge old and new fields with new fields overwriting old ones.
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$catarr = array_merge( $category, $catarr );
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return wp_insert_category( $catarr );
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}
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//
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// Tags.
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//
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/**
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* Checks whether a post tag with a given name exists.
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*
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* @since 2.3.0
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*
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* @param int|string $tag_name
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* @return mixed Returns null if the term does not exist.
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* Returns an array of the term ID and the term taxonomy ID if the pairing exists.
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* Returns 0 if term ID 0 is passed to the function.
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*/
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function tag_exists( $tag_name ) {
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return term_exists( $tag_name, 'post_tag' );
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}
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/**
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* Adds a new tag to the database if it does not already exist.
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*
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* @since 2.3.0
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*
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* @param int|string $tag_name
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* @return array|WP_Error
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*/
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function wp_create_tag( $tag_name ) {
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return wp_create_term( $tag_name, 'post_tag' );
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}
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/**
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* Gets comma-separated list of tags available to edit.
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*
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* @since 2.3.0
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*
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* @param int $post_id
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* @param string $taxonomy Optional. The taxonomy for which to retrieve terms. Default 'post_tag'.
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* @return string|false|WP_Error
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*/
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function get_tags_to_edit( $post_id, $taxonomy = 'post_tag' ) {
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return get_terms_to_edit( $post_id, $taxonomy );
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}
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/**
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* Gets comma-separated list of terms available to edit for the given post ID.
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*
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* @since 2.8.0
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*
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* @param int $post_id
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* @param string $taxonomy Optional. The taxonomy for which to retrieve terms. Default 'post_tag'.
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* @return string|false|WP_Error
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*/
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function get_terms_to_edit( $post_id, $taxonomy = 'post_tag' ) {
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$post_id = (int) $post_id;
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if ( ! $post_id ) {
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return false;
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}
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$terms = get_object_term_cache( $post_id, $taxonomy );
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if ( false === $terms ) {
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$terms = wp_get_object_terms( $post_id, $taxonomy );
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wp_cache_add( $post_id, wp_list_pluck( $terms, 'term_id' ), $taxonomy . '_relationships' );
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}
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if ( ! $terms ) {
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return false;
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}
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if ( is_wp_error( $terms ) ) {
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return $terms;
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}
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$term_names = array();
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foreach ( $terms as $term ) {
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$term_names[] = $term->name;
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}
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$terms_to_edit = esc_attr( implode( ',', $term_names ) );
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/**
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* Filters the comma-separated list of terms available to edit.
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*
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* @since 2.8.0
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*
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* @see get_terms_to_edit()
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*
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* @param string $terms_to_edit A comma-separated list of term names.
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* @param string $taxonomy The taxonomy name for which to retrieve terms.
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*/
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$terms_to_edit = apply_filters( 'terms_to_edit', $terms_to_edit, $taxonomy );
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return $terms_to_edit;
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}
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/**
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* Adds a new term to the database if it does not already exist.
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*
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* @since 2.8.0
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*
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* @param string $tag_name The term name.
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* @param string $taxonomy Optional. The taxonomy within which to create the term. Default 'post_tag'.
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* @return array|WP_Error
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*/
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function wp_create_term( $tag_name, $taxonomy = 'post_tag' ) {
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$id = term_exists( $tag_name, $taxonomy );
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if ( $id ) {
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return $id;
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}
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return wp_insert_term( $tag_name, $taxonomy );
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}
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