<?php
/**
* ACF Block Bindings
*
* @since 6.2.8
* @package ACF
*/
namespace ACF\Blocks;
/**
* The core ACF Blocks binding class.
*/
class Bindings {
/**
* Block Bindings constructor.
*/
public function __construct() {
// Final check we're on WP 6.5 or newer.
if ( ! function_exists( 'register_block_bindings_source' ) ) {
return;
}
add_action( 'acf/init', array( $this, 'register_binding_sources' ) );
}
/**
* Hooked to acf/init, register our binding sources.
*/
public function register_binding_sources() {
if ( acf_get_setting( 'enable_block_bindings' ) ) {
register_block_bindings_source(
'acf/field',
array(
'label' => _x( 'ACF Fields', 'The core ACF block binding source name for fields on the current page', 'acf' ),
'get_value_callback' => array( $this, 'get_value' ),
)
);
}
}
/**
* Handle returing the block binding value for an ACF meta value.
*
* @since 6.2.8
*
* @param array $source_attrs An array of the source attributes requested.
* @param \WP_Block $block_instance The block instance.
* @param string $attribute_name The block's bound attribute name.
* @return string The block binding value.
*/
public function get_value( array $source_attrs, \WP_Block $block_instance, string $attribute_name ) {
if ( ! isset( $source_attrs['key'] ) || ! is_string( $source_attrs['key'] ) ) {
$value = null;
} else {
$value = get_field( $source_attrs['key'] );
if ( is_array( $value ) ) {
$value = implode( ', ', $value );
}
// If we're not a scalar we'd throw an error, so return early for safety.
if ( ! is_scalar( $value ) ) {
$value = null;
}
}
return apply_filters( 'acf/blocks/binding_value', $value, $source_attrs, $block_instance, $attribute_name );
}
}