ACF (Advanced Custom Fields) is a popular plugin for adding custom fields to WordPress. Sometimes, you may encounter issues when importing or exporting ACF fields. Here’s a code snippet that can help you troubleshoot and resolve ACF field import/export issues:
/**
* Fix ACF field import/export issues by updating field keys.
*
* @param array $field_group
* @return array
*/
function wpsnippets_fix_acf_import_export_issues( $field_group ) {
// Loop through each field in the field group
foreach ( $field_group['fields'] as &$field ) {
// Generate a new field key
$new_key = 'field_' . md5( uniqid() );
// Update the field key
$field['key'] = $new_key;
}
return $field_group;
}
add_filter( 'acf/import_field_group', 'wpsnippets_fix_acf_import_export_issues' );
add_filter( 'acf/export_field_group', 'wpsnippets_fix_acf_import_export_issues' );
This code snippet defines a custom function wpsnippets_fix_acf_import_export_issues that takes an ACF field group array as a parameter. It loops through each field in the field group and generates a new field key using md5( uniqid() ). It then updates the field key with the new value.
To fix ACF field import/export issues, you need to add this function as a filter for both the acf/import_field_group and acf/export_field_group hooks. This ensures that the function is called when importing or exporting field groups.
By updating the field keys, you can avoid conflicts and ensure that the imported/exported ACF fields are unique and consistent.
Examples
Example 1: Export ACF fields to a JSON file
This example demonstrates how to export Advanced Custom Fields (ACF) fields to a JSON file using the acf/export_field_group filter.
function wpsnippets_export_acf_fields() {
$field_group = acf_get_field_group('group_key');
$fields = acf_get_fields($field_group['key']);
$json = json_encode($fields, JSON_PRETTY_PRINT);
file_put_contents('path/to/exported_fields.json', $json);
}
add_action('acf/export_field_group', 'wpsnippets_export_acf_fields');
In this code example, we define a custom function wpsnippets_export_acf_fields that is hooked to the acf/export_field_group action. Inside the function, we retrieve the ACF field group using acf_get_field_group and then fetch all the fields associated with that group using acf_get_fields. We then encode the fields array into JSON format using and save it to a file using file_put_contents.
Example 2: Import ACF fields from a JSON file
This example demonstrates how to import ACF fields from a JSON file using the acf/import_field_group action.
function wpsnippets_import_acf_fields() {
$json = file_get_contents('path/to/imported_fields.json');
$fields = json_decode($json, true);
acf_import_field_group($fields);
}
add_action('acf/import_field_group', 'wpsnippets_import_acf_fields');
In this code example, we define a custom function wpsnippets_import_acf_fields that is hooked to the acf/import_field_group action. Inside the function, we read the contents of the JSON file using file_get_contents and then decode the JSON into an associative array using . Finally, we import the field group using acf_import_field_group.
Example 3: Exclude specific ACF fields from export
This example demonstrates how to exclude specific ACF fields from being exported using the acf/export_field_group filter.
function wpsnippets_exclude_acf_fields($fields) {
$excluded_fields = array('field_1', 'field_2');
foreach ($excluded_fields as $excluded_field) {
unset($fields[$excluded_field]);
}
return $fields;
}
add_filter('acf/export_field_group', 'wpsnippets_exclude_acf_fields');
In this code example, we define a custom function wpsnippets_exclude_acf_fields that is hooked to the acf/export_field_group filter. Inside the function, we define an array of field keys that we want to exclude from the export. We then loop through the fields array and unset the excluded fields using unset. Finally, we return the modified fields array.