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Optional routing segments in Rails

Optional routing segments in Ruby on Rails are a versatile feature in the framework's routing system, allowing for more flexible and dynamic URL structures. These segments are denoted by parentheses and can significantly streamline routing patterns.

For example, a route like:

get 'books(/:genre)', to: 'books#index' 

Here, :genre is an optional segment. This route will match /books and /books/fiction, routing them to the books#index action. The presence or absence of the genre parameter can be used within the controller to tailor the response.

Optional segments are handy for simplifying routes that cater to multiple URL patterns, reducing the need for numerous specific routes. They enhance the flexibility and readability of the code, making the application's URL structure more intuitive and user-friendly.

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