What is WordPress Hook: block_categories
The block_categories hook in WordPress is used to add or remove categories from the block editor. This hook allows developers to customize the categories that are displayed when adding a new block to a post or page.
Understanding the Hook: block_categories
The block_categories hook is located within the block editor initialization process in WordPress. It is used to modify the list of block categories that are available for selection when adding a new block. Developers can use this hook to add custom categories or remove existing ones based on their specific requirements.
Hook Parameters (if applicable): block_categories
The block_categories hook does not accept any parameters. It simply allows developers to modify the list of block categories without the need for additional arguments.
Hook Doesn’t Work: block_categories
If the block_categories hook doesn’t work as expected, it could be due to a conflict with other plugins or themes that also modify the block categories. It is recommended to deactivate other plugins or switch to a default theme to troubleshoot the issue. Additionally, checking for any syntax errors in the code that modifies the block categories is essential for ensuring the hook functions correctly.
Best Practices & Usage Notes (if applicable): block_categories
When using the block_categories hook, it is important to consider the impact on the user experience. Adding too many custom categories can clutter the block editor interface, so it is best to only include categories that are essential for content organization. Additionally, developers should ensure that the categories added through this hook are relevant to the content and provide value to the user.
Usage Example: block_categories
“`php
function custom_block_categories( $categories, $post ) {
return array_merge(
$categories,
array(
array(
‘slug’ => ‘custom-category’,
‘title’ => ‘Custom Category’,
),
)
);
}
add_filter( ‘block_categories’, ‘custom_block_categories’, 10, 2 );
“`