FormlessAction.php

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<?php
abstract class FormlessAction extends Action {
 
    abstract public function onView();
 
    public function show() {
        $this->setHeaders();
 
        // This will throw exceptions if there's a problem
        $this->checkCanExecute( $this->getUser() );
 
        $this->getOutput()->addHTML( $this->onView() );
    }
}