including general variables in modules

[Mario Ruiz]

I'm trying to create different scenarios so I thought to do something
like:

file:scenarios.rb
------------------
module Scenarios
module Default
$bab="defaultmodulevalue"
end
module DefaultHidden
$bab="hiddenmodulevalue"
end
module DefaultSecond
$bab="secondmodulevalue"
end
end

file:mytest.rb
---------------
require 'scenarios.rb'
include Scenarios:efault
...
puts $bab

--------------

but it doesn't matter which module I include I always have the same
respond:
"secondmodulevalue"

Any ideas for resolving this?

Thanks.

 

[Rob Biedenharn]

I'm trying to create different scenarios so I thought to do something
like:

file:scenarios.rb
------------------
module Scenarios
module Default
$bab="defaultmodulevalue"
end
module DefaultHidden
$bab="hiddenmodulevalue"
end
module DefaultSecond
$bab="secondmodulevalue"
end
end

file:mytest.rb
---------------
require 'scenarios.rb'
include Scenarios:efault
...
puts $bab

--------------

but it doesn't matter which module I include I always have the same
respond:
"secondmodulevalue"

Any ideas for resolving this?

Thanks.

Uh, stop using global variables?

-Rob

Rob Biedenharn http://agileconsultingllc.com
(e-mail address removed)

 

[Mario Ruiz]

But I need it.

Uh, stop using global variables?

-Rob

Rob Biedenharn http://agileconsultingllc.com
(e-mail address removed)

 

[Rob Biedenharn]

But I need it.

Do you really?

Perhaps you can describe your "need" and get a better answer, but why
not something like:

==> scenarios.rb <==
module Scenarios
module Default
def bab; "defaultmodulevalue"; end
end
module DefaultHidden
def bab; "hiddenmodulevalue"; end
end
module DefaultSecond
def bab; "secondmodulevalue"; end
end
end
__END__

==> these.rb <==
require 'scenarios'
class ThisOne
include Scenarios:efault
end

class ThatOne
include Scenarios:efaultSecond
end

puts "ThisOne has #{ThisOne.new.bab}"
puts "ThatOne has #{ThatOne.new.bab}"
__END__


-Rob

Rob Biedenharn http://agileconsultingllc.com
(e-mail address removed)

 

[Mario Ruiz]

so it's impossible to do it whithout declaring a method...

 

[Rob Biedenharn]

so it's impossible to do it whithout declaring a method...

You still haven't defined what "it" really is. Perhaps with a better
description of what you're hoping to accomplish you could get a better
answer or hint.

-Rob

Rob Biedenharn http://agileconsultingllc.com
(e-mail address removed)

 

[Christopher Dicely]

so it's impossible to do it whithout declaring a method...

That depends what you want, which isn't clear. If you don't need to change the
values (and even if you do, since the constant-ness of Ruby constants isn't
enforced, though using them when you don't want something constant is
usually bad design), you can do without methods:

file:scenarios.rb
------------------
module Scenarios
module Default
BAB ="defaultmodulevalue"
end
module DefaultHidden
BAB ="hiddenmodulevalue"
end
module DefaultSecond
BAB ="secondmodulevalue"
end
end

file:mytest.rb
---------------
require 'scenarios.rb'
include Scenarios:efault
...
puts BAB

--------------

 

[Mario Ruiz]

Actually what I want is to include an scenario with all my global
variables and if I want another scenario I can include it and all the
global variables will change.
module Scenarios
module MyFirstSc
$web="http://www.elmundo.es"
$sqlSearch="select video from datab"
$user="Pep"
$password="xxx"
end
module MySecondSc
$web="http://www.elmundo.es"
$sqlSearch="select audiodefault from datab"
$user="Bee"
$password="2x8"
end
end

In my test cases I'll have in the first line for example:
include Scenarios::MySecondSc
and if I want to change the scenario I only have to change this line:
include Scenarios::MyFirstSc

How can I do it without including an extraline with a method?
I know I could do something like:
module Scenarios
module MyFirstSc
def getValues
$web="http://www.elmundo.es"
$sqlSearch="select video from datab"
$user="Pep"
$password="xxx"
end
end
...
end

and in the first line we'll write:
include Scenarios::MyFirstSc
Scenarios::MyFirstSc.getValues()


But I don't like this way I would like to do it in only one line... is
it possible???

Thanks for your time.

 

[David A. Black]

Hi --

Actually what I want is to include an scenario with all my global
variables and if I want another scenario I can include it and all the
global variables will change.
module Scenarios
module MyFirstSc
$web="http://www.elmundo.es"
$sqlSearch="select video from datab"
$user="Pep"
$password="xxx"
end
module MySecondSc
$web="http://www.elmundo.es"
$sqlSearch="select audiodefault from datab"
$user="Bee"
$password="2x8"
end
end

In my test cases I'll have in the first line for example:
include Scenarios::MySecondSc
and if I want to change the scenario I only have to change this line:
include Scenarios::MyFirstSc

How can I do it without including an extraline with a method?
I know I could do something like:
module Scenarios
module MyFirstSc
def getValues
$web="http://www.elmundo.es"
$sqlSearch="select video from datab"
$user="Pep"
$password="xxx"
end
end
...
end

and in the first line we'll write:
include Scenarios::MyFirstSc
Scenarios::MyFirstSc.getValues()


But I don't like this way I would like to do it in only one line... is
it possible???

See Chris's answer: use constants, and include the module you want.
I've been programming in Ruby for 7.5 years and I have no clear memory
of ever having created a global variable. I imagine I have once or
twice, but it's very, very unlikely that you need to do it or that
it's the best way to do it in this case.


David

 

[Mario Ruiz]

Thanks Morel I think this one could be the solution.
But I have a question for you...
Why do you need super(mod)??

Thanks

 

[Mario Ruiz]

Thanks everybody for your time and suggestions.