Uninitialized constant error with a variables within a module

rubyonrails-talk
1

Hi,

New to ruby development so wondering if someone could help…

I have this code in a file1.rb

#file1.rb

module GG

class GG

::NAME = 'gginfrausermanager'

end

end

and want to call this variable in another file2.rb with the following code:

#file2.rb

require ‘./file1.rb’

include GG

p “#{GG::NAME} is called from file1.rb”

However when I do a ruby file2.rb I get uninitialized constant GG::NAME.

Can you tell me what I’m doing wrong?

Thanks!

2

[snip]

::NAME = ‘gginfrausermanager’

[snip]

and want to call this variable in another file2.rb with the following code:

#file2.rb

require ‘./file1.rb’

include GG

p “#{GG::NAME} is called from file1.rb”

However when I do a ruby file2.rb I get uninitialized constant GG::NAME.

Can you tell me what I’m doing wrong?

There are two things here. First, because you’ve done ::NAME = (instead of NAME=) this has set the constant at the top level: you’ve created Object::NAME, not GG::GG::NAME

The second thing is that constant lookup always looks at the current scoping before it starts walking up the lexical scope chain or the ancestry chain: even after you include GG, GG::NAME is referring to the top level GG (i.e. the module not the class)

Fred

3

What exactly are you trying to achieve???