<?php
if( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly
if( ! class_exists('acf_json') ) :
class acf_json {
function __construct() {
// update setting
acf_update_setting('save_json', get_stylesheet_directory() . '/acf-json');
acf_append_setting('load_json', get_stylesheet_directory() . '/acf-json');
// actions
add_action('acf/update_field_group', array($this, 'update_field_group'), 10, 1);
add_action('acf/untrash_field_group', array($this, 'update_field_group'), 10, 1);
add_action('acf/trash_field_group', array($this, 'delete_field_group'), 10, 1);
add_action('acf/delete_field_group', array($this, 'delete_field_group'), 10, 1);
add_action('acf/include_fields', array($this, 'include_json_folders'), 10, 0);
}
/*
* update_field_group
*
* This function is hooked into the acf/update_field_group action and will save all field group data to a .json file
*
* @type function
* @date 10/03/2014
* @since 5.0.0
*
* @param $field_group (array)
* @return n/a
*/
function update_field_group( $field_group ) {
// validate
if( !acf_get_setting('json') ) return;
// get fields
$field_group['fields'] = acf_get_fields( $field_group );
// save file
acf_write_json_field_group( $field_group );
}
/*
* delete_field_group
*
* This function will remove the field group .json file
*
* @type function
* @date 10/03/2014
* @since 5.0.0
*
* @param $field_group (array)
* @return n/a
*/
function delete_field_group( $field_group ) {
// validate
if( !acf_get_setting('json') ) return;
// WP appends '__trashed' to end of 'key' (post_name)
$field_group['key'] = str_replace('__trashed', '', $field_group['key']);
// delete
acf_delete_json_field_group( $field_group['key'] );
}
/*
* include_json_folders
*
* This function will include all registered .json files
*
* @type function
* @date 10/03/2014
* @since 5.0.0
*
* @param n/a
* @return n/a
*/
function include_json_folders() {
// validate
if( !acf_get_setting('json') ) return;
// vars
$paths = acf_get_setting('load_json');
// loop through and add to cache
foreach( $paths as $path ) {
$this->include_json_folder( $path );
}
}
/*
* include_json_folder
*
* This function will include all .json files within a folder
*
* @type function
* @date 1/5/17
* @since 5.5.13
*
* @param n/a
* @return n/a
*/
function include_json_folder( $path = '' ) {
// remove trailing slash
$path = untrailingslashit( $path );
// bail early if path does not exist
if( !is_dir($path) ) return false;
// open
$dir = opendir( $path );
// bail early if not valid
if( !$dir ) return false;
// loop over files
while(false !== ( $file = readdir($dir)) ) {
// validate type
if( pathinfo($file, PATHINFO_EXTENSION) !== 'json' ) continue;
// read json
$json = file_get_contents("{$path}/{$file}");
// validate json
if( empty($json) ) continue;
// decode
$json = json_decode($json, true);
// add local
$json['local'] = 'json';
// add field group
acf_add_local_field_group( $json );
}
// return
return true;
}
}
// initialize
acf()->json = new acf_json();
endif; // class_exists check
/*
* acf_write_json_field_group
*
* This function will save a field group to a json file within the current theme
*
* @type function
* @date 5/12/2014
* @since 5.1.5
*
* @param $field_group (array)
* @return (boolean)
*/
function acf_write_json_field_group( $field_group ) {
// vars
$path = acf_get_setting('save_json');
$file = $field_group['key'] . '.json';
// remove trailing slash
$path = untrailingslashit( $path );
// bail early if dir does not exist
if( !is_writable($path) ) return false;
// prepare for export
$id = acf_extract_var( $field_group, 'ID' );
$field_group = acf_prepare_field_group_for_export( $field_group );
// add modified time
$field_group['modified'] = get_post_modified_time('U', true, $id, true);
// write file
$f = fopen("{$path}/{$file}", 'w');
fwrite($f, acf_json_encode( $field_group ));
fclose($f);
// return
return true;
}
/*
* acf_delete_json_field_group
*
* This function will delete a json field group file
*
* @type function
* @date 5/12/2014
* @since 5.1.5
*
* @param $key (string)
* @return (boolean)
*/
function acf_delete_json_field_group( $key ) {
// vars
$path = acf_get_setting('save_json');
$file = $key . '.json';
// remove trailing slash
$path = untrailingslashit( $path );
// bail early if file does not exist
if( !is_readable("{$path}/{$file}") ) {
return false;
}
// remove file
unlink("{$path}/{$file}");
// return
return true;
}
?>