Wordpress: Advanced Custom Fields Validation
Improve the integrity and usability of custom fields in your WordPress site with robust validation techniques using this Advanced Custom Fields snippet.
Ensuring data integrity through validation is key when using custom fields in WordPress. This snippet provides a method for validating custom fields before they are saved, using Advanced Custom Fields (ACF) plugin hooks.
The 'acf/validate_value' hook is used to add validation checks to specific fields, such as ensuring that a numeric field falls within a certain range or that a text field contains no prohibited words.
Examples of adding custom validation messages and handling different field types are provided, enhancing the user's understanding and interaction with the form.
Best practices for structuring validation logic to maintain site performance and user experience are discussed.
Tips for integrating this validation with other WordPress features or plugins to create a cohesive and functional data entry and management system are also included.
Snippet Code
Version Compatibility
This snippet is suitable for sites using the Advanced Custom Fields plugin, version 5.0 and later, where enhanced validation hooks are supported.
Required PHP Version
PHP 5.6 or higher
Wordpress Core Functions Used
Use Cases
- form processing
- data validation
- custom post types