defines the substitutions to be made in the API paths deifned in concerns included. For example:

There is this method defined in concern:

   api GET ':controller_path/:id'
   def show
     # ...
   end

If you include the concern into some controller, you can specify the value for :controller_path like this:

     apipie_concern_subst(:controller_path => '/users')
     include ::Concerns::SampleController

The resulting path will be ’/users/:id’.

It has to be specified before the concern is included.

If not specified, the default predefined substitions are

   {:conroller_path => controller.controller_path,
    :resource_id  => `resource_id_from_apipie` }

create method api and redefine newly added method