processwire-hooks

ProcessWire hooks allow you to modify page rendering by attaching an 'after' hook to the 'Page::render' method. This intercepts the event object to alter output, extending core functionality while maintaining system flexibility.

ProcessWire hook types include 'before', 'after', 'replace', 'method', and 'property' hooks. Each type intercepts specific execution stages to modify or extend core functionalities like data validation and URL handling.

Yes, you can automatically add watermarks by hooking into the 'File::save' event. By implementing an 'after' hook, you intercept the uploaded file data and apply your custom watermark logic before final storage.

To validate data before saving in ProcessWire, use a 'before' hook on the page save method. This allows you to inspect the event object, apply conditional logic, and halt the process if validation fails.

ProcessWire allows hook priority management to control execution order when multiple hooks attach to the same method. You configure priority settings to ensure your custom hooks execute in the correct sequence.

Yes, ProcessWire supports custom URL handlers through URL and path hooks. This advanced technique intercepts routing to map custom URLs to your specific logic, bypassing default template rendering.