sub menu for post type in wordpress

To create a sub menu for a custom post type in WordPress, follow these steps:

1. Register the custom post type: First, you need to register the custom post type in your WordPress theme or plugin. This can be done by using the register_post_type() function. Make sure to specify the necessary parameters such as the post type name, labels, and capabilities.

2. Create a custom taxonomy: To group the custom post type into a sub menu, you'll need to create a custom taxonomy. This can be achieved using the register_taxonomy() function. Specify the taxonomy name, labels, and the post types it should be associated with.

3. Add the sub menu page: Next, you'll need to add the sub menu page to the WordPress admin menu. This can be done using the add_submenu_page() function. Specify the parent menu slug, the page title, the menu title, the capability required to access the page, the menu slug, and the callback function to render the page content.

4. Render the sub menu page content: Define the callback function specified in the previous step. This function will be responsible for rendering the content of the sub menu page. You can use HTML, PHP, or any other necessary code to display the desired content.

5. Assign the taxonomy to the post type: Finally, you need to assign the custom taxonomy to the custom post type. This can be done by using the register_taxonomy_for_object_type() function. Specify the taxonomy name and the post type name.

By following these steps, you should be able to create a sub menu for your custom post type in WordPress.