What is WordPress Hook: _wp_post_revision_field_{$field}
The _wp_post_revision_field_{$field} hook is a specific WordPress hook that allows developers to modify the fields displayed in the post revisions meta box.
Understanding the Hook: _wp_post_revision_field_{$field}
The _wp_post_revision_field_{$field} hook is located within the post.php file in the wp-admin directory. It is used to add or modify the fields displayed in the post revisions meta box when viewing the revision history of a post.
Hook Parameters (if applicable): _wp_post_revision_field_{$field}
The _wp_post_revision_field_{$field} hook accepts the $field parameter, which represents the specific field being modified or added to the post revisions meta box. Developers can use this parameter to dynamically add or modify fields based on their specific needs.
Hook Doesn’t Work: _wp_post_revision_field_{$field}
If the _wp_post_revision_field_{$field} hook doesn’t work as expected, it may be due to incorrect usage or conflicts with other plugins or themes. To troubleshoot, developers should ensure that the hook is being added in the correct location and that the $field parameter is being used appropriately.
Best Practices & Usage Notes (if applicable): _wp_post_revision_field_{$field}
When using the _wp_post_revision_field_{$field} hook, developers should be mindful of potential conflicts with other plugins or themes that also modify the post revisions meta box. It is recommended to use unique field names to avoid conflicts and to thoroughly test any modifications to ensure they function as intended.
Usage Example: _wp_post_revision_field_{$field}
“`php
function custom_post_revision_field( $fields ) {
$fields[‘custom_field’] = ‘Custom Field’;
return $fields;
}
add_filter( ‘_wp_post_revision_field_{$field}’, ‘custom_post_revision_field’ );
“`
