<?php
/**
* @package ACF
* @author WP Engine
*
* © 2025 Advanced Custom Fields (ACF®). All rights reserved.
* "ACF" is a trademark of WP Engine.
* Licensed under the GNU General Public License v2 or later.
* https://www.gnu.org/licenses/gpl-2.0.html
*/
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly
}
if ( ! class_exists( 'ACF_Compatibility' ) ) :
class ACF_Compatibility {
/**
* __construct
*
* Sets up the class functionality.
*
* @date 30/04/2014
* @since 5.0.0
*
* @param void
* @return void
*/
function __construct() {
// actions
add_filter( 'acf/validate_field', array( $this, 'validate_field' ), 20, 1 );
add_filter( 'acf/validate_field/type=textarea', array( $this, 'validate_textarea_field' ), 20, 1 );
add_filter( 'acf/validate_field/type=relationship', array( $this, 'validate_relationship_field' ), 20, 1 );
add_filter( 'acf/validate_field/type=post_object', array( $this, 'validate_relationship_field' ), 20, 1 );
add_filter( 'acf/validate_field/type=page_link', array( $this, 'validate_relationship_field' ), 20, 1 );
add_filter( 'acf/validate_field/type=image', array( $this, 'validate_image_field' ), 20, 1 );
add_filter( 'acf/validate_field/type=file', array( $this, 'validate_image_field' ), 20, 1 );
add_filter( 'acf/validate_field/type=wysiwyg', array( $this, 'validate_wysiwyg_field' ), 20, 1 );
add_filter( 'acf/validate_field/type=date_picker', array( $this, 'validate_date_picker_field' ), 20, 1 );
add_filter( 'acf/validate_field/type=taxonomy', array( $this, 'validate_taxonomy_field' ), 20, 1 );
add_filter( 'acf/validate_field/type=date_time_picker', array( $this, 'validate_date_time_picker_field' ), 20, 1 );
add_filter( 'acf/validate_field/type=user', array( $this, 'validate_user_field' ), 20, 1 );
add_filter( 'acf/validate_field_group', array( $this, 'validate_field_group' ), 20, 1 );
// Modify field wrapper attributes
add_filter( 'acf/field_wrapper_attributes', array( $this, 'field_wrapper_attributes' ), 20, 2 );
// location
add_filter( 'acf/location/validate_rule/type=post_taxonomy', array( $this, 'validate_post_taxonomy_location_rule' ), 20, 1 );
add_filter( 'acf/location/validate_rule/type=post_category', array( $this, 'validate_post_taxonomy_location_rule' ), 20, 1 );
// Update settings
add_action( 'acf/init', array( $this, 'init' ) );
}
/**
* init
*
* Adds compatibility for deprecated settings.
*
* @date 10/6/19
* @since 5.8.1
*
* @param void
* @return void
*/
function init() {
// Update "show_admin" setting based on defined constant.
if ( defined( 'ACF_LITE' ) && ACF_LITE ) {
acf_update_setting( 'show_admin', false );
}
}
/**
* field_wrapper_attributes
*
* Adds compatibility with deprecated field wrap attributes.
*
* @date 21/1/19
* @since 5.7.10
*
* @param array $wrapper The wrapper attributes array.
* @param array $field The field array.
*/
function field_wrapper_attributes( $wrapper, $field ) {
// Check compatibility setting.
if ( acf_get_compatibility( 'field_wrapper_class' ) ) {
$wrapper['class'] .= " field_type-{$field['type']}";
if ( $field['key'] ) {
$wrapper['class'] .= " field_key-{$field['key']}";
}
}
// Return wrapper.
return $wrapper;
}
/**
* validate_field
*
* Adds compatibility with deprecated settings
*
* @date 23/04/2014
* @since 5.0.0
*
* @param array $field The field array.
* @return array $field
*/
function validate_field( $field ) {
// conditional logic data structure changed to groups in version 5.0.0
// convert previous data (status, rules, allorany) into groups
if ( isset( $field['conditional_logic']['status'] ) ) {
// check status
if ( $field['conditional_logic']['status'] ) {
$field['conditional_logic'] = acf_convert_rules_to_groups( $field['conditional_logic']['rules'], $field['conditional_logic']['allorany'] );
} else {
$field['conditional_logic'] = 0;
}
}
// return
return $field;
}
/**
* validate_textarea_field
*
* Adds compatibility with deprecated settings
*
* @date 23/04/2014
* @since 5.0.0
*
* @param array $field The field array.
* @return array $field
*/
function validate_textarea_field( $field ) {
// formatting has been removed
$formatting = acf_extract_var( $field, 'formatting' );
if ( $formatting === 'br' ) {
$field['new_lines'] = 'br';
}
// return
return $field;
}
/**
* validate_relationship_field
*
* Adds compatibility with deprecated settings
*
* @date 23/04/2014
* @since 5.0.0
*
* @param array $field The field array.
* @return array $field
*/
function validate_relationship_field( $field ) {
// remove 'all' from post_type
if ( acf_in_array( 'all', $field['post_type'] ) ) {
$field['post_type'] = array();
}
// remove 'all' from taxonomy
if ( acf_in_array( 'all', $field['taxonomy'] ) ) {
$field['taxonomy'] = array();
}
// result_elements is now elements
if ( isset( $field['result_elements'] ) ) {
$field['elements'] = acf_extract_var( $field, 'result_elements' );
}
// return
return $field;
}
/**
* validate_image_field
*
* Adds compatibility with deprecated settings
*
* @date 23/04/2014
* @since 5.0.0
*
* @param array $field The field array.
* @return array $field
*/
function validate_image_field( $field ) {
// save_format is now return_format
if ( isset( $field['save_format'] ) ) {
$field['return_format'] = acf_extract_var( $field, 'save_format' );
}
// object is now array
if ( $field['return_format'] == 'object' ) {
$field['return_format'] = 'array';
}
// return
return $field;
}
/**
* validate_wysiwyg_field
*
* Adds compatibility with deprecated settings
*
* @date 23/04/2014
* @since 5.0.0
*
* @param array $field The field array.
* @return array $field
*/
function validate_wysiwyg_field( $field ) {
// media_upload is now numeric
if ( $field['media_upload'] === 'yes' ) {
$field['media_upload'] = 1;
} elseif ( $field['media_upload'] === 'no' ) {
$field['media_upload'] = 0;
}
// return
return $field;
}
/**
* validate_date_picker_field
*
* Adds compatibility with deprecated settings
*
* @date 23/04/2014
* @since 5.0.0
*
* @param array $field The field array.
* @return array $field
*/
function validate_date_picker_field( $field ) {
// date_format has changed to display_format
if ( isset( $field['date_format'] ) ) {
// extract vars
$date_format = $field['date_format'];
$display_format = $field['display_format'];
// convert from js to php
$display_format = acf_convert_date_to_php( $display_format );
// append settings
$field['display_format'] = $display_format;
$field['save_format'] = $date_format;
// clean up
unset( $field['date_format'] );
}
// return
return $field;
}
/**
* validate_taxonomy_field
*
* Adds compatibility with deprecated settings
*
* @date 23/04/2014
* @since 5.2.7
*
* @param array $field The field array.
* @return array $field
*/
function validate_taxonomy_field( $field ) {
// load_save_terms deprecated in favour of separate save_terms
if ( isset( $field['load_save_terms'] ) ) {
$field['save_terms'] = acf_extract_var( $field, 'load_save_terms' );
}
// return
return $field;
}
/**
* validate_date_time_picker_field
*
* Adds compatibility with deprecated settings
*
* @date 23/04/2014
* @since 5.2.7
*
* @param array $field The field array.
* @return array $field
*/
function validate_date_time_picker_field( $field ) {
// 3rd party date time picker
// https://github.com/soderlind/acf-field-date-time-picker
if ( ! empty( $field['time_format'] ) ) {
// extract vars
$time_format = acf_extract_var( $field, 'time_format' );
$date_format = acf_extract_var( $field, 'date_format' );
$get_as_timestamp = acf_extract_var( $field, 'get_as_timestamp' );
// convert from js to php
$time_format = acf_convert_time_to_php( $time_format );
$date_format = acf_convert_date_to_php( $date_format );
// append settings
$field['return_format'] = $date_format . ' ' . $time_format;
$field['display_format'] = $date_format . ' ' . $time_format;
// timestamp
if ( $get_as_timestamp === 'true' ) {
$field['return_format'] = 'U';
}
}
// return
return $field;
}
/**
* validate_user_field
*
* Adds compatibility with deprecated settings
*
* @date 23/04/2014
* @since 5.2.7
*
* @param array $field The field array.
* @return array $field
*/
function validate_user_field( $field ) {
// remove 'all' from roles
if ( acf_in_array( 'all', $field['role'] ) ) {
$field['role'] = '';
}
// field_type removed in favour of multiple
if ( isset( $field['field_type'] ) ) {
// extract vars
$field_type = acf_extract_var( $field, 'field_type' );
// multiple
if ( $field_type === 'multi_select' ) {
$field['multiple'] = true;
}
}
// return
return $field;
}
/**
* This function will provide compatibility with ACF4 field groups
*
* @type function
* @date 23/04/2014
* @since 5.0.0
*
* @param $field_group (array)
* @return $field_group
*/
function validate_field_group( $field_group ) {
// vars
$version = 5;
// field group key was added in version 5.0.0
// detect ACF4 data and generate key
if ( ! $field_group['key'] ) {
$version = 4;
$field_group['key'] = isset( $field_group['id'] ) ? "group_{$field_group['id']}" : uniqid( 'group_' );
}
// prior to version 5.0.0, settings were saved in an 'options' array
// extract and merge options into the field group
if ( isset( $field_group['options'] ) ) {
$options = acf_extract_var( $field_group, 'options' );
$field_group = array_merge( $field_group, $options );
}
// location data structure changed to groups in version 4.1.0
// convert previous data (rules, allorany) into groups
if ( isset( $field_group['location']['rules'] ) ) {
$field_group['location'] = acf_convert_rules_to_groups( $field_group['location']['rules'], $field_group['location']['allorany'] );
}
// some location rule names have changed in version 5.0.0
// loop over location data and modify rules
$replace = array(
'taxonomy' => 'post_taxonomy',
'ef_media' => 'attachment',
'ef_taxonomy' => 'taxonomy',
'ef_user' => 'user_role',
'user_type' => 'current_user_role', // 5.2.0
);
// only replace 'taxonomy' rule if is an ACF4 field group
if ( $version > 4 ) {
unset( $replace['taxonomy'] );
}
// loop over location groups
if ( $field_group['location'] ) {
foreach ( $field_group['location'] as $i => $group ) {
// loop over group rules
if ( $group ) {
foreach ( $group as $j => $rule ) {
// migrate param
if ( isset( $replace[ $rule['param'] ] ) ) {
$field_group['location'][ $i ][ $j ]['param'] = $replace[ $rule['param'] ];
}
}
}
}
}
// change layout to style (v5.0.0)
if ( isset( $field_group['layout'] ) ) {
$field_group['style'] = acf_extract_var( $field_group, 'layout' );
}
// change no_box to seamless (v5.0.0)
if ( $field_group['style'] === 'no_box' ) {
$field_group['style'] = 'seamless';
}
// return
return $field_group;
}
/**
* validate_post_taxonomy_location_rule
*
* description
*
* @date 27/8/18
* @since 5.7.4
*
* @param type $var Description. Default.
* @return type Description.
*/
function validate_post_taxonomy_location_rule( $rule ) {
// previous versions of ACF (v4.4.12) saved value as term_id
// convert term_id into "taxonomy:slug" string
if ( is_numeric( $rule['value'] ) ) {
$term = acf_get_term( $rule['value'] );
if ( $term ) {
$rule['value'] = acf_encode_term( $term );
}
}
// return
return $rule;
}
}
acf_new_instance( 'ACF_Compatibility' );
endif; // class_exists check
/**
* Returns true if compatibility is enabled for the given component.
*
* @date 20/1/15
* @since 5.1.5
*
* @param string $name The name of the component to check.
* @return boolean
*/
function acf_get_compatibility( $name ) {
return apply_filters( "acf/compatibility/{$name}", false );
}
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