readme.md

ACF to REST API

Exposes Advanced Custom Fields Endpoints in the WordPress REST API

https://wordpress.org/plugins/acf-to-rest-api/

• Installation
• Endpoints
• Filters
• Deprecated Filters
• Request API Version
• Field Settings
• Editing the Fields
• Examples
• Get ACF Fields Recursively
• Cache

Installation

1. Copy the acf-to-rest-api folder into your wp-content/plugins folder
2. Activate the ACF to REST API plugin via the plugin admin page

Endpoints

Endpoint	READABLE	EDITABLE
/wp-json/acf/v3/posts
/wp-json/acf/v3/posts/{id}
/wp-json/acf/v3/posts/{id}/{field-name}
/wp-json/acf/v3/pages
/wp-json/acf/v3/pages/{id}
/wp-json/acf/v3/pages/{id}/{field-name}
/wp-json/acf/v3/users
/wp-json/acf/v3/users/{id}
/wp-json/acf/v3/users/{id}/{field-name}
/wp-json/acf/v3/{taxonomy}
/wp-json/acf/v3/{taxonomy}/{id}
/wp-json/acf/v3/{taxonomy}/{id}/{field-name}
/wp-json/acf/v3/comments
/wp-json/acf/v3/comments/{id}
/wp-json/acf/v3/comments/{id}/{field-name}
/wp-json/acf/v3/media
/wp-json/acf/v3/media/{id}
/wp-json/acf/v3/media/{id}/{field-name}
/wp-json/acf/v3/{post-type}
/wp-json/acf/v3/{post-type}/{id}
/wp-json/acf/v3/{post-type}/{id}/{field-name}
/wp-json/acf/v3/options/{id}
/wp-json/acf/v3/options/{id}/{field-name}

Filters

Filter	Argument(s)
acf/rest_api/id	mixed ( string, integer, boolean ) $id string $type string $controller
acf/rest_api/key	string $key WP_REST_Request $request string $type
acf/rest_api/item_permissions/get	boolean $permission WP_REST_Request $request string $type
acf/rest_api/item_permissions/update	boolean $permission WP_REST_Request $request string $type
acf/rest_api/{type}/prepare_item	mixed ( array, boolean ) $item WP_REST_Request $request
acf/rest_api/{type}/get_fields	mixed ( array, WP_REST_Request ) $data mixed ( WP_REST_Request, NULL ) $request
acf/rest_api/field_settings/show_in_rest	boolean $show
acf/rest_api/field_settings/edit_in_rest	boolean $edit

Basic example of how to use the filters, in this case I will set a new permission to get the fields

add_filter( 'acf/rest_api/item_permissions/get', function( $permission ) {
  return current_user_can( 'edit_posts' );
} );

Deprecated filters

Filter	Argument(s)
acf/rest_api/type	string $type
acf/rest_api/types	array $types
acf/rest_api/default_rest_base	boolean $default string $type

Request API version

See below how to select the Request API Version.

1. Open the plugins page;
2. Click the settings link under the pluing name ( ACF to REST API );
3. Select your version in the ACF to REST API session;
4. Click in the button Save changes.

The other alternative is to define the constant ACF_TO_REST_API_REQUEST_VERSION in your wp-config.php

define( 'ACF_TO_REST_API_REQUEST_VERSION', 2 );

Field Settings

In this version is possible to configure the field options via admin.

The options are enabled using the filters below, by default theses options are disabled.

// Enable the option show in rest
add_filter( 'acf/rest_api/field_settings/show_in_rest', '__return_true' );

// Enable the option edit in rest
add_filter( 'acf/rest_api/field_settings/edit_in_rest', '__return_true' );

After you activate the filters, all your fields should show these options:

Editing the fields

The fields should be sent into the key fields.

Action: http://localhost/wp-json/acf/v3/posts/1

<form action="http://localhost/wp-json/acf/v3/posts/1" method="POST">
  <?php 
    // https://developer.wordpress.org/rest-api/using-the-rest-api/authentication/
    wp_nonce_field( 'wp_rest' ); 
  ?>
  <label>Site: <input type="text" name="fields[site]"></label>
  <button type="submit">Save</button>
</form>

Action: http://localhost/wp-json/wp/v2/posts/1

<form action="http://localhost/wp-json/wp/v2/posts/1" method="POST">
  <?php 
    // https://developer.wordpress.org/rest-api/using-the-rest-api/authentication/
    wp_nonce_field( 'wp_rest' ); 
  ?>
  <label>Title: <input type="text" name="title"></label>
  <h3>ACF</h3>
  <label>Site: <input type="text" name="fields[site]"></label>
  <button type="submit">Save</button>
</form>

Use the filter acf/rest_api/key to change the key fields.

add_filter( 'acf/rest_api/key', function( $key, $request, $type ) {
  return 'acf_fields';
}, 10, 3 );

Now, the fields should be sent into the key acf_fields

<form action="http://localhost/wp-json/acf/v3/posts/1" method="POST">
  <?php 
    // https://developer.wordpress.org/rest-api/using-the-rest-api/authentication/
    wp_nonce_field( 'wp_rest' ); 
  ?>
  <label>Site: <input type="text" name="acf_fields[site]"></label>
  <button type="submit">Save</button>
</form>

Examples

Sample theme to edit the ACF Fields.

https://github.com/airesvsg/acf-to-rest-api-example

To-do list

https://github.com/airesvsg/to-do-list-acf-to-rest-api

Get ACF Fields Recursively

https://github.com/airesvsg/acf-to-rest-api-recursive

More details:

• Issues

  • airesvsg#109
  • airesvsg#223
  • airesvsg#9

• Pull Request

  • airesvsg#95

Cache

Enable caching for WordPress REST API and increase speed of your application.

https://github.com/airesvsg/wp-rest-api-cache