How do we pass meta data when creating user with REST API via cURL?

I’m using a call to GET /wp/user/<id> to test visibility of the custom field.

I included register_meta() in my functions.php file and that didn’t help, the custom fields weren’t returned. Should I have done more than simply paste in a call to register_meta()?

However, the method outlined on StackExchange did return the custom fields. https://wordpress.stackexchange.com/questions/338134/updating-custom-wordpress-user-meta-field-via-rest-api

add_action('rest_api_init', function() {
    register_rest_field( 'user', 'uuid', [
        'get_callback'    => 'get_user_uuid',
        'update_callback' => 'update_user_uuid',
        'schema'          => [
                                'type'        => 'string',
                                'description' => 'The UUID passed in by FileMaker',
                                'context'     => [ 'view', 'edit' ],
                             ],
    ]);
});

function get_user_uuid( $user, $field_name, $request ) { 
    return get_user_meta( $user[ 'id' ], $field_name, true );
}

function update_user_uuid( $user, $meta_value ) { 
    update_user_meta( $user[ 'id' ], 'wpcf-uuid', $meta_value );
}

I’ll check to see if it is possible to pass data into the UUID field when creating users. It’s working for accessing data that is currently there.

I have found a solution to my problem. I suspect that the most prominent solutions found by my web searching were suitable for /wp/v1/. We are now at /wp/v2/ so those answers are out-of-date.

The advice to use register_meta to declare that a particular meta option can be accessed by REST API is still correct.

It can easily be added by placing a short code block in your theme functions.php file. Registering your custom field using register_meta instructs your custom meta property to be included in the output when a call is made to a REST endpoint.

This is what I have included in my theme functions.php file.

add_action( 'rest_api_init', function () {   
		register_meta( 'user', 'wpcf-uuid', array( 
		'single' => true, 
		'type' => 'string', 
		'default' => true, 
		'show_in_rest' => true, 
		'supports' => [
                    'title',
                    'custom-fields',
                    'revisions'
                ]
		) );
}); 

For my needs, to fill custom fields when adding a new user, the important component that I needed was to add an action to be triggered on rest_insert_user. That can be achieved with this code, which I found at Stack Exchange – WordPress. Thanks to Guilherme Sampaio. Guilherme Sampaio

The function simply walks through the meta array and passes the values to update_user_meta.

function remote_user_update($user, $request, $create)
{
    if ($request['meta']) {
        $user_id = $user->ID;
        foreach ($request['meta'] as $key => $value) {
            update_user_meta( $user_id, $key, $value );
        }
    }
}
add_action( 'rest_insert_user', 'remote_user_update', 12, 3 );

This is solution may be the “first and worst.” If you have a different way of solving this problem, please respond here so that there can be a small repo of working solutions for other people working with Custom Fields and the JSON REST API.

• This reply was modified 3 years, 10 months ago by budasy.