I have an endpoint in this address:


I want to add a field to the endpoint with these codes:

add_action( 'rest_api_init', 'create_api_posts_meta_field' );
function create_api_posts_meta_field() {    
           'get_callback'    => 'get_post_meta_for_api',
function get_post_meta_for_api( ) {
    return $hello;

but it doesn't work. Please tell me whats wrong with my codes.

  • Your code seems fine, so how exactly is it not working - did you see any error, or your custom REST field doesn't appear in the response? Are you sure the post type slug is correct - which in the question is myendpoint?
    – Sally CJ
    Oct 16, 2020 at 14:45
  • Hi, myendpoint is existed and working correctly. I want to add "post-meta-fields" to it. but it doesn't show "post-meta-fields" in this address: example.com/wp-json/wp/v2/myendpoint
    – Sadegh
    Oct 16, 2020 at 14:55
  • Can you edit your question and include the post type registration code?
    – Sally CJ
    Oct 16, 2020 at 15:11


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