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(Quick Reference) # scope ## Purpose Changes the scope of a controller ## Examples

    class BookController {    static scope = "session"    // …
    }
## Description By default controllers are "prototype" scoped which means that a new controller will be created for each request. This behaviour can be changed by specifying a `scope` attribute with on the following values: `prototype` (default) - A new controller will be created for each request (recommended for actions as Closure properties) `session` - One controller is created for the scope of a user session `singleton` - Only one instance of the controller ever exists (recommended for actions as methods) See Controllers and Scopes in the user guide for more information. | Quick Reference (hide)