til/rails/test-out-url-and-path-helpers-in-the-console.md

Test Out URL And Path Helpers In The Console

Rails has fancy metaprogrammed URL and path helpers generated from the config/routes.rb file. There is a ton of configurability to these routes. It can sometimes be hard to know exactly how they'll behave or what the generated route helper will look like. In those cases, we may want to test them out in the console.

The Rails console doesn't have the same things autoloaded as mailers and views where we tend use these route helpers. So, we can reference them through Rails.application.routes.url_helpers.

From there we can run both *_path route helpers.

> Rails.application.routes.url_helpers
    .api_v1_post_with_slugged_title_path(
      slug: 123,
      slugged_title: 'a-recent-path'
    )

=> "/api/v1/posts/123/a-recent-path"

and *_url path helpers.

> Rails.application.routes.url_helpers
    .api_v1_post_with_slugged_title_url(
      slug: 123,
      slugged_title: 'a-recent-path'
    )

=> "http://localhost:3000/api/v1/posts/123/a-recent-path"

For the *_url path helpers, make sure you have default_url_options set.

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