Rails - Apr 2011 - Routing Error : No route matches "/" (for "Hello World!" action)

My routes.rb reads at the top:

Hello::Application.routes.draw do
  match '':controller(/:action(/:id(.:format)))''

and then all the commented material it comes with and an "end" at the
end of the file.

But when I type http://localhost:3000 into my browser I get the
following error message:

Routing Error
No route matches "/"

I''m stumped.

Bruce

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I don''t see that you''ve routed anything to the
''/'' path.

Your route requires the controller to be in the path.

First step would be to uncomment this
 # You can have the root of your site routed with "root"
  # just remember to delete public/index.html.
  # root :to => "welcome#index"

replacing ''welcome'' with the controller you want / to route to
and
index.html with the action.

Along those lines, usually there  is a public/index.html that should
be displayed.

Do you have a file in public/html?

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On Apr 7, 6:51 pm, Bruce Wilson
<bwilson...-/E1597aS9LQAvxtiuMwx3w@public.gmane.org>
wrote:
> My routes.rb reads at the top:
>
> Hello::Application.routes.draw do
>   match '':controller(/:action(/:id(.:format)))''
>
> and then all the commented material it comes with and an "end" at
the
> end of the file.
>
> But when I typehttp://localhost:3000into my browser I get the
> following error message:
>
> Routing Error
> No route matches "/"
>
> I''m stumped.
>
The above means that rails can only recognized paths that start with
the name of a controller, optionally followed by an action and id.
''/''
clearly doesn''t fall into that pattern so you get a routing error. One
way of specifying a default root is by saying

root :to => ''pages#main''

which says that / should be routed to the main action in
PagesController

Fred
> Bruce
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On Apr 7, 11:17 am, mainguy
<mike.main...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> I don''t see that you''ve routed anything to the
''/'' path.
>
> Your route requires the controller to be in the path.
>
> First step would be to uncomment this
>  # You can have the root of your site routed with "root"
>   # just remember to delete public/index.html.
>   # root :to => "welcome#index"
>
> replacing ''welcome'' with the controller you want / to
route to and
> index.html with the action.
>
> Along those lines, usually there  is a public/index.html that should
> be displayed.
>
> Do you have a file in public/html?

I''m following the instructions in Beginning Rails 3:

$ rails generate controller salutation
Then I added a Hello method to the controller.
Then I created a hello.html.erb template in app/views/salutation.

So the routes.rb file with this code:

Hello::Application.routes.draw do
     match '':controller(/:action(/:id(.:format)))''
end

is supposed to deliver the desired result of "Hello World!".

But I went ahead and changed the routes.rb file to read:

Hello::Application.routes.draw do
root :to => "salutation#hello"

That delivers the Hello World! in the browser, but along with the .erb
code:

{\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fswiss
\fcharset0 Arial;}} {\*\generator Msftedit
5.41.21.2509;}\viewkind4\uc1\pard\f0\fs20 \par \tab \par \tab\tab
Hello World!
\par \tab \par \par }

What to do?

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On Apr 7, 10:02 pm, Bruce Wilson
<bwilson...-/E1597aS9LQAvxtiuMwx3w@public.gmane.org>
wrote:
> On Apr 7, 11:17 am, mainguy
<mike.main...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
>
>
>
>
> > I don''t see that you''ve routed anything to the
''/'' path.
>
> > Your route requires the controller to be in the path.
>
> > First step would be to uncomment this
> >  # You can have the root of your site routed with "root"
> >   # just remember to delete public/index.html.
> >   # root :to => "welcome#index"
>
> > replacing ''welcome'' with the controller you want /
to route to and
> > index.html with the action.
>
> > Along those lines, usually there  is a public/index.html that should
> > be displayed.
>
> > Do you have a file in public/html?
>
> I''m following the instructions in Beginning Rails 3:
>
> $ rails generate controller salutation
> Then I added a Hello method to the controller.
> Then I created a hello.html.erb template in app/views/salutation.
>
> So the routes.rb file with this code:
>
> Hello::Application.routes.draw do
>      match '':controller(/:action(/:id(.:format)))''
> end
>
> is supposed to deliver the desired result of "Hello World!".
>
> But I went ahead and changed the routes.rb file to read:
>
> Hello::Application.routes.draw do
> root :to => "salutation#hello"
>
> That delivers the Hello World! in the browser, but along with the .erb
> code:
>
> {\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fswiss
> \fcharset0 Arial;}} {\*\generator Msftedit
> 5.41.21.2509;}\viewkind4\uc1\pard\f0\fs20 \par \tab \par \tab\tab
> Hello World!
> \par \tab \par \par }
>
That looks like you edited your template with an editor that saved it
as an rtf file rather than plain text.

Fred
> What to do?
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On Apr 7, 2:16 pm, Frederick Cheung
<frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> On Apr 7, 10:02 pm, Bruce Wilson
<bwilson...-/E1597aS9LQAvxtiuMwx3w@public.gmane.org> wrote:
>
>
>
>
>
>
>
> > On Apr 7, 11:17 am, mainguy
<mike.main...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
> > > I don''t see that you''ve routed anything to the
''/'' path.
>
> > > Your route requires the controller to be in the path.
>
> > > First step would be to uncomment this
> > >  # You can have the root of your site routed with
"root"
> > >   # just remember to delete public/index.html.
> > >   # root :to => "welcome#index"
>
> > > replacing ''welcome'' with the controller you
want / to route to and
> > > index.html with the action.
>
> > > Along those lines, usually there  is a public/index.html that
should
> > > be displayed.
>
> > > Do you have a file in public/html?
>
> > I''m following the instructions in Beginning Rails 3:
>
> > $ rails generate controller salutation
> > Then I added a Hello method to the controller.
> > Then I created a hello.html.erb template in app/views/salutation.
>
> > So the routes.rb file with this code:
>
> > Hello::Application.routes.draw do
> >      match '':controller(/:action(/:id(.:format)))''
> > end
>
> > is supposed to deliver the desired result of "Hello World!".
>
> > But I went ahead and changed the routes.rb file to read:
>
> > Hello::Application.routes.draw do
> > root :to => "salutation#hello"
>
> > That delivers the Hello World! in the browser, but along with the .erb
> > code:
>
> > {\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fswiss
> > \fcharset0 Arial;}} {\*\generator Msftedit
> > 5.41.21.2509;}\viewkind4\uc1\pard\f0\fs20 \par \tab \par \tab\tab
> > Hello World!
> > \par \tab \par \par }
> > What to do?
>
> That looks like you edited your template with an editor that saved it
> as an rtf file rather than plain text.
>
> Fred
You''re right!  Much thanks to all of the above responders.

But for the sake of learning, can anyone tell me why the Beginning
Rails 3 code doesn''t work, and what exactly is it supposed to do?
> > Hello::Application.routes.draw do
> >      match '':controller(/:action(/:id(.:format)))''
> > end
Bruce

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