The issue with using register_meta() to register metadata.

I want to register metadata for a complex data type with the following structure:

[
  {
    "mediaType": "image",
    "mediaID": "36",
    "respnsive": [
      {
        "mediaType": "image",
        "mediaID": "36",
        "rule": {
          "client": "desktop",
          "ratio": "landscape"
        }
      }
    ]
  },
  {
    "mediaType": "image",
    "mediaID": "37",
    "respnsive": [
      {
        "mediaType": "image",
        "mediaID": "38",
        "rule": {
          "client": "desktop",
          "ratio": "landscape"
        }
      }
    ]
  },
  ...
]

I registered using the following method:

register_meta(
  'post',
  '_mk_post_thumbnail',
  array(
    'single' => false,
    'type' => 'array',
    'show_in_rest' => array(
      'schema' => array(
        'type' => 'array',
        'items' => array(
          'type' => 'object',
          'properties' => array(
            'theType' => array(
              'type' => 'string',
            ),
          ),
        ),
      ),
    ),
    'auth_callback' => function () {
      return current_user_can('edit_posts');
    }
  ) 
);

I get the value and update it use restapi

const value = useSelect( ( select ) => {
  return select( 'core/editor' ).getEditedPostAttribute( 'meta' )?._mk_post_thumbnail;
} ) || [];

const handleItemAdd = () => {
  const newValue = [ ...value ];
  newValue.push( { mediaType: 'image' } );
  editPost( {
    meta: { _mk_post_thumbnail: newValue },
  } );
};

But when I try to save in gutenberg editor, it prompts me ‘Update failed. The type of meta._mk_post_thumbnail[0] is not an array.

• This topic was modified 14 hours, 16 minutes ago by weweloo.