Rails - Aug 2009 - NameError: undefined local variable or method `testapp' for main:Object

Hi,

   I am new to Ruby on Rails. Recently, I downloaded and installed the
InstantRails in the D:\ drive of my system. Now I wanted to try some
small examples in ''irb'', so I created a file
"testapp.rb" and in that
pasted a code like this:

=======================     class sample_class
        def sample_method
          puts "sample program"
       end
     end

myclass = sample_class.new
myclass.sample_method
=======================
 Now when I give command (To run the application) "ruby testapp.rb" ,
I get this error "NameError: undefined local variable or method
`testapp'' for main:Object". I believe, the irb is not able to
recognize any .rb file. Can anybody help me with this?

 Additional details:-

   location of irb - D:\RoR\ruby\bin
   location of testapp.rb - D:\RoR\ruby\bin

 Many thanks in advance!

On Aug 31, 3:43 pm, maddy
<murali.man...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
>  Now when I give command (To run the application) "ruby
testapp.rb" ,
> I get this error "NameError: undefined local variable or method
> `testapp'' for main:Object". I believe, the irb is not able to
> recognize any .rb file. Can anybody help me with this?
You are mixing things up a bit. ruby testapp.rb is what you''d enter at
the command prompt to run a ruby script. irb on the other hand is a
ruby console, that evaluates ruby code.

Fred

Hi Fred,

   Thanks for clarification. You''re right, I had mixed up things
there.

Thanks,
Maddy

On Aug 31, 9:05 pm, Frederick Cheung
<frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> On Aug 31, 3:43 pm, maddy
<murali.man...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
> >  Now when I give command (To run the application) "ruby
testapp.rb" ,
> > I get this error "NameError: undefined local variable or method
> > `testapp'' for main:Object". I believe, the irb is not
able to
> > recognize any .rb file. Can anybody help me with this?
>
> You are mixing things up a bit. ruby testapp.rb is what you''d
enter at
> the command prompt to run a ruby script. irb on the other hand is a
> ruby console, that evaluates ruby code.
>
> Fred

ruby class names are Upper case by definition, use:

class Sampleclass
  or
class SampleClass

On Aug 31, 1:23 pm, maddy
<murali.man...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Hi Fred,
>
>    Thanks for clarification. You''re right, I had mixed up things
> there.
>
> Thanks,
> Maddy
>
> On Aug 31, 9:05 pm, Frederick Cheung
<frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> wrote:
>
> > On Aug 31, 3:43 pm, maddy
<murali.man...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
> > >  Now when I give command (To run the application) "ruby
testapp.rb" ,
> > > I get this error "NameError: undefined local variable or
method
> > > `testapp'' for main:Object". I believe, the irb is
not able to
> > > recognize any .rb file. Can anybody help me with this?
>
> > You are mixing things up a bit. ruby testapp.rb is what you''d
enter at
> > the command prompt to run a ruby script. irb on the other hand is a
> > ruby console, that evaluates ruby code.
>
> > Fred