# Define Options

Options for a post type are defined in the `options()` method and must return an array of valid [WordPress post type options](https://developer.wordpress.org/reference/functions/register_post_type/#parameters).

By default, an empty array is returned but these options are merged with a generated options array in PostTypes and whatever options are defined here will overwrite those defaults.

See [`register_post_type()`](https://developer.wordpress.org/reference/functions/register_post_type/#parameters) for a full list of supported options.

```php
use PostTypes\PostType;

class Books extends PostType
{
    //...

    /**
     * Returns the options for the Books post type.
     *
     * @return array
     */
    public function options(): array
    {
        return [
            'public'       => true,
            'show_in_rest' => true,
        ];
    }
}
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://posttypes.jjgrainger.co.uk/post-types/define-options.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.