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<?php
/**
* Term Data source for Block Bindings.
*
* @since 6.9.0
* @package WordPress
* @subpackage Block Bindings
*/
/**
* Gets value for Term Data source.
*
* @since 6.9.0
* @access private
*
* @param array $source_args Array containing source arguments used to look up the override value.
* Example: array( "field" => "name" ).
* @param WP_Block $block_instance The block instance.
* @return mixed The value computed for the source.
*/
function _block_bindings_term_data_get_value( array $source_args, $block_instance ) {
if ( empty( $source_args['field'] ) ) {
return null;
}
/*
* BACKWARDS COMPATIBILITY: Hardcoded exception for navigation blocks.
* Required for WordPress 6.9+ navigation blocks. DO NOT REMOVE.
*/
$block_name = $block_instance->name ?? '';
$is_navigation_block = in_array(
$block_name,
array( 'core/navigation-link', 'core/navigation-submenu' ),
true
);
if ( $is_navigation_block ) {
// Navigation blocks: read from block attributes.
$term_id = $block_instance->attributes['id'] ?? null;
$type = $block_instance->attributes['type'] ?? '';
// Map UI shorthand to taxonomy slug when using attributes.
$taxonomy = ( 'tag' === $type ) ? 'post_tag' : $type;
} else {
// All other blocks: use context
$term_id = $block_instance->context['termId'] ?? null;
$taxonomy = $block_instance->context['taxonomy'] ?? '';
}
// If we don't have required identifiers, bail early.
if ( empty( $term_id ) || empty( $taxonomy ) ) {
return null;
}
// Get the term data.
$term = get_term( $term_id, $taxonomy );
if ( is_wp_error( $term ) || ! $term ) {
return null;
}
// Check if taxonomy exists and is publicly queryable.
$taxonomy_object = get_taxonomy( $taxonomy );
if ( ! $taxonomy_object || ! $taxonomy_object->publicly_queryable ) {
if ( ! current_user_can( 'read' ) ) {
return null;
}
}
switch ( $source_args['field'] ) {
case 'id':
return esc_html( (string) $term_id );
case 'name':
return esc_html( $term->name );
case 'link':
// Only taxonomy entities are supported by Term Data.
$term_link = get_term_link( $term );
return is_wp_error( $term_link ) ? null : esc_url( $term_link );
case 'slug':
return esc_html( $term->slug );
case 'description':
return wp_kses_post( $term->description );
case 'parent':
return esc_html( (string) $term->parent );
case 'count':
return esc_html( (string) $term->count );
default:
return null;
}
}
/**
* Registers Term Data source in the block bindings registry.
*
* @since 6.9.0
* @access private
*/
function _register_block_bindings_term_data_source() {
if ( get_block_bindings_source( 'core/term-data' ) ) {
// The source is already registered.
return;
}
register_block_bindings_source(
'core/term-data',
array(
'label' => _x( 'Term Data', 'block bindings source' ),
'get_value_callback' => '_block_bindings_term_data_get_value',
'uses_context' => array( 'termId', 'taxonomy' ),
)
);
}
add_action( 'init', '_register_block_bindings_term_data_source' );