What is meant here?

In the "Head First Rails" book, it mentions the following:

If the matching route contains symbols, then the Routing system will
create "matching parameters" in the request parameters table params[.
.. ].....

I want to ask about matching parameters. Does that mean that if we have
the following symbols:

:id
:controller
:action

So, does "create "matching parameters" in the request parameters table
params[. .. ]" mean the following:

params[:id, :controller, :action]

And, one final thing. What is the "Routing system"? Is it routes.rb?

Thanks.

I think params[...] should NOT be written as I wrote it in my question
like this: params[:id, :controller, :action]?

It should be written as follows instead?

params[:id]
params[:controller]
params[:action]

?

Or, both are the same?

It's a bit more than that - routes.rb is the means by which you
configure the routing system, which could be broadly described as the
part of rails that dispatches incoming requests to individual
controller actions.

Fred

Frederick Cheung wrote: