block_categories_all

What is WordPress Hook: block_categories_all

The block_categories_all hook in WordPress is used to add or remove categories from the block editor. It allows developers to customize the categories that are displayed when adding a new block to a post or page.

Understanding the Hook: block_categories_all

The block_categories_all hook is located within the block editor process in WordPress. It is responsible for determining which categories are available for selection when adding a new block. Developers can use this hook to modify the default categories or add custom categories to the block editor.

Hook Parameters (if applicable): block_categories_all

The block_categories_all hook does not accept any parameters. It simply allows developers to modify the list of categories available in the block editor.

Hook Doesn’t Work: block_categories_all

If the block_categories_all hook doesn’t work as expected, it may be due to conflicts with other plugins or themes that are also modifying the block categories. To troubleshoot, developers should deactivate other plugins and switch to a default theme to see if the issue persists. Additionally, checking for syntax errors in the code modifying the hook can help identify the problem.

Best Practices & Usage Notes (if applicable): block_categories_all

When using the block_categories_all hook, developers should be mindful of the impact on the user experience. Adding too many categories or removing essential categories can make it difficult for users to find the blocks they need. It’s best to use this hook sparingly and with consideration for the end user.

Usage Example: block_categories_all

“`php
function custom_block_categories( $categories, $post ) {
return array_merge(
$categories,
array(
array(
‘slug’ => ‘custom-blocks’,
‘title’ => ‘Custom Blocks’,
),
)
);
}
add_filter( ‘block_categories_all’, ‘custom_block_categories’, 10, 2 );
“`
In this example, the block_categories_all hook is used to add a custom category called “Custom Blocks” to the block editor. This allows developers to organize their custom blocks separately from the default categories.

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