Can't set types of properties within an object attribute

[mrclay]

Because WP doesn't define what an attribute with type object means, these attributes end up with the generic BlockAttributesObject type in this plugin, and can't be extended with register_graphql_field('MyBlock', 'film', .... If you need decent types from blocks in GraphQL, then, you just can't use nested attributes. Nested attributes would improve the authoring experience of Save/Edit components, allowing us to build up structures from subcomponents.

One solution would be for the plugin to read object properties inside attributes like:

{
  ...
  "attributes": {
    "film": {
      "type": "object",
      "properties": {
        "id": {
          "type": "string"
        }
        ...
      }
    }
  }
}

A workaround would be to allow the field's GraphQL type to be overridden using register_graphql_field or some other function.

[mrclay]

I suppose I should lobby WP itself to better define its block.json schema. IMO the type object really should not mean any unstructured data type. Maybe unknown could be created for that.