expose related posts in REST API

This thread is resolved. Here is a description of the problem and solution.

Problem:
The user would like to expose some related posts as a field in the REST API responses.

Solution:
I run a small test and I found out that the issue in your code is the dash in the REST field name "parent-page", the code works with an underscore "parent_page". Check this screenshot http://prntscr.com/vr8azl

I used the following and slugs:

Parent slug: "parent-cpt".
Child slug: "child-cpt".
Relationship slug:

function get_parent_page_for_api_bonos( $object ) {
  //get the id of the post object array
  $post_id = $object['id'];
  //return the post meta
  return toolset_get_related_post( $post_id, 'parent-cpt-child-cpt');
}
 
add_action( 'rest_api_init', 'create_api_posts_meta_field_bonos');
function create_api_posts_meta_field_bonos() {
  register_rest_field( 
    'child-cpt', 
    'parent_page', 
    array(
      'get_callback' => 'get_parent_page_for_api_bonos',
      'schema' => null,
    )
  );
}

Relevant Documentation:

This support ticket is created 4 years, 11 months ago. There's a good chance that you are reading advice that it now obsolete.

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Tagged: Types fields API, Types plugin

This topic contains 5 replies, has 2 voices.

Last updated by avansisI-2 4 years, 11 months ago.

Assisted by: Jamal.

Author

Posts

November 27, 2020 at 9:03 am #1858713

avansisI-2

I have a issue with this code

//AÑADIR RELATIONSHIPS BONOS
add_action( 'rest_api_init', 'create_api_posts_meta_field_bonos');

function create_api_posts_meta_field_bonos() {
register_rest_field( 'bonos', 'parent-page', array(
'get_callback' => 'get_parent_page_for_api_bonos',
'schema' => null,
)
);
}

function get_parent_page_for_api_bonos( $object ) {
//get the id of the post object array
$post_id = $object['id'];
//return the post meta
return toolset_get_related_post( $post_id, 'bonos');
}

And parent-page is 0
Could you help me?

November 27, 2020 at 1:09 pm #1859075

Jamal

I run a small test and I found out that the issue in your code is the dash in the REST field name "parent-page", the code works with an underscore "parent_page". Check this screenshot hidden link

I used the following and slugs:
- Parent slug: "parent-cpt".
- Child slug: "child-cpt".
- Relationship slug:

function get_parent_page_for_api_bonos( $object ) {
  //get the id of the post object array
  $post_id = $object['id'];
  //return the post meta
  return toolset_get_related_post( $post_id, 'parent-cpt-child-cpt');
}

add_action( 'rest_api_init', 'create_api_posts_meta_field_bonos');
function create_api_posts_meta_field_bonos() {
  register_rest_field( 
    'child-cpt', 
    'parent_page', 
    array(
      'get_callback' => 'get_parent_page_for_api_bonos',
      'schema' => null,
    )
  );
}

I hope this helps. Let me know if you have any questions.

November 27, 2020 at 8:47 pm #1859499

avansisI-2

Hi Jamal,

Thanks for you reply. With this code doesnt appear parent_page in api

you can see it here
/wp-json/wp/v2/bonos

November 28, 2020 at 8:55 am #1859779

avansisI-2

I created this code but it keeps sending me a 0 in

"campana_bonos": 0,

//AÑADIR RELATIONSHIPS BONOS
function get_parent_page_for_api_bonos( $object ) {
  //get the id of the post object array
  $post_id = $object['id'];
  //return the post meta
  return toolset_get_related_post( $post_id, 'bonos');
}
 
add_action( 'rest_api_init', 'create_api_posts_meta_field_bonos');
function create_api_posts_meta_field_bonos() {
  register_rest_field( 
    'bonos', 
    'campana_bonos', 
    array(
      'get_callback' => 'get_parent_page_for_api_bonos',
      'schema' => null,
    )
  );
}

November 28, 2020 at 9:11 am #1859781

Jamal

There was an issue with your code in the toolset_get_related_post function. The second argument should be the slug of the relationship "campana-bonos-bono".
I fixed it in your code and it works as you may see in this screenshot hidden link

function get_parent_page_for_api_bonos( $object ) {
  //get the id of the post object array
  $post_id = $object['id'];
  //return the post meta
  return toolset_get_related_post( $post_id, 'campana-bonos-bono');
}

November 28, 2020 at 9:40 am #1859791

avansisI-2

My issue is resolved now. Thank you!