What are SilverStripe extensions, and how do they work?

What are SilverStripe extensions, and how do they work?

Answer: SilverStripe extensions are a way to enhance or modify the functionality of existing classes in the SilverStripe CMS framework without altering the original code. They allow developers to add new methods, properties, or override existing ones, promoting code reuse and better organization.

Extensions work by using the `extends` property in the class definition. Developers can create custom extension classes and then apply them to existing SilverStripe components (like data objects, controllers, or forms) using the `Injector` or by configuring them in the `_config.php` file. When executed, the SilverStripe framework automatically includes the functionalities defined in these extensions, allowing for seamless integration.

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