JSON API to show Advanced Custom Fields - WordPress

Question

I am developing a magazine WordPress site that will have a json feed for a Mobile App. I set the backend up using Advanced Custom Fields with a Repeater Field for Multiple Artic

Answer 1

Came here by searching with the same question. This isn't totally vetted yet but I think this is getting on the right path. Check it out.

I have one less nested level than you do so this might need altered a bit. But the JSON API plugin has a filter called json_api_encode. I have a repeater called specifications that looks like this.

http://d.pr/i/YMvv

In my functions file I have this.

add_filter('json_api_encode', 'my_encode_specs');

function my_encode_specs($response) {
  if (isset($response['posts'])) {
    foreach ($response['posts'] as $post) {
      my_add_specs($post); // Add specs to each post
    }
  } else if (isset($response['post'])) {
    my_add_specs($response['post']); // Add a specs property
  }
  return $response;
}

function my_add_specs(&$post) {
  $post->specs = get_field('specifications', $post->id);
}

Which appends a custom value to the JSON API output. Notice the get_field function from ACF works perfectly here for bringing back the array of the repeater values.

Hope this helps!