How to create custom post types in WordPress using register_post_type

The WordPress register_post_type function is used to create a new post type in WordPress, such as “post”, “page”, or custom post types. This function allows developers to define the characteristics and behaviors of the new post type, including its labels, capabilities, and supported features.

This function can be useful for creating custom content types that are distinct from standard posts and pages, allowing for more flexibility in organizing and displaying content on a WordPress website. It also enables developers to create custom administrative interfaces and templates for managing and displaying the new post type.

The register_post_type function provides a valuable utility for extending the functionality of WordPress and tailoring the content management system to specific project requirements.

Parameters accepted by the WordPress register_post_type function

  • $post_type (string, required): This is the post type key and must not exceed 20 characters. It may only contain lowercase alphanumeric characters, dashes, and underscores.
  • $args (array|string, optional, default value: array()): This parameter accepts an array or string of arguments for registering a post type.

Value returned by the function

The function returns either a WP_Post_Type object on success or a WP_Error object on failure.

Examples

How to register a custom post type in WordPress

function custom_post_type() {
 $args = array(
 'public' => true,
 'label' => 'Custom Post Type'
 );
 register_post_type( 'custom_post_type', $args );
}
add_action( 'init', 'custom_post_type' );

This code snippet registers a custom post type in WordPress called ‘Custom Post Type’ with the slug ‘custom_post_type’.

How to register a custom post type with custom taxonomies in WordPress

function custom_post_type_with_taxonomy() {
 $args = array(
 'public' => true,
 'label' => 'Custom Post Type',
 'taxonomies' => array( 'category', 'post_tag' )
 );
 register_post_type( 'custom_post_type', $args );
}
add_action( 'init', 'custom_post_type_with_taxonomy' );

This code snippet registers a custom post type in WordPress called ‘Custom Post Type’ with the slug ‘custom_post_type’ and custom taxonomies ‘category’ and ‘post_tag’.

How to register a custom post type with custom capabilities in WordPress

function custom_post_type_with_capabilities() {
 $args = array(
 'public' => true,
 'label' => 'Custom Post Type',
 'capabilities' => array(
 'edit_post' => 'edit_custom_post',
 'read_post' => 'read_custom_post',
 'delete_post' => 'delete_custom_post',
 'edit_posts' => 'edit_custom_posts',
 'edit_others_posts' => 'edit_others_custom_posts',
 'publish_posts' => 'publish_custom_posts',
 'read_private_posts' => 'read_private_custom_posts'
 )
 );
 register_post_type( 'custom_post_type', $args );
}
add_action( 'init', 'custom_post_type_with_capabilities' );

This code snippet registers a custom post type in WordPress called ‘Custom Post Type’ with the slug ‘custom_post_type’ and custom capabilities for editing, reading, and deleting posts.

Conclusion

In conclusion, the register_post_type function is an useful utility for customizing the content management system in WordPress. By using this function, developers can create custom post types with their own unique attributes and behaviors, providing a more tailored experience for both content creators and site visitors. Additionally, the flexibility of this function allows for seamless integration with other aspects of the WordPress ecosystem, making it a valuable asset for any developer looking to extend the functionality of their website. Overall, the register_post_type function is a crucial component in the toolkit of any WordPress developer, offering endless possibilities for customization and enhancement of the platform.

Related WordPress Functions

in WordPress Functions