NameError: undefined local variable or method `testapp' for main:Object

Rails
1

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!

2

On Aug 31, 3:43 pm, maddy [email protected] 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

3

Hi Fred,

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

Thanks,
Maddy

On Aug 31, 9:05 pm, Frederick C. [email protected]

4

ruby class names are Upper case by definition, use:

class Sampleclass
or
class SampleClass