Upgrading from 4.0.x to 4.0.4

Please refer to the upgrade instructions corresponding to your installation method.

• Composer Installation App Starter Upgrading

• Composer Installation Adding CodeIgniter4 to an Existing Project Upgrading

• Manual Installation Upgrading

CodeIgniter 4.0.4 fixes a bug in the implementation of Controller Filters, breaking code implementing the FilterInterface.

Update FilterInterface declarations

The method signatures for after() and before() must be updated to include $arguments. The function definitions should be changed from:

public function before(RequestInterface $request)
public function after(RequestInterface $request, ResponseInterface $response)

to:

public function before(RequestInterface $request, $arguments = null)
public function after(RequestInterface $request, ResponseInterface $response, $arguments = null)