dynamically access class constants?

[Marli Ba]

I've been looking for a method similar to:

Obj.sendmethod)

but to access class constants. So if I have:

class MyObj
MY_CONSTANT_1
end

I want to access MyObj::MY_CONSTANT_1 by using a variable like foo =
MY_CONSTANT_1 and then MyObj::sendfoo), but obviously send is only
meant to work with methods and not constants.

Is there any way to do this? I've looked but am having difficulty
finding anything.

Thanks,
Marli

 

[Justin Collins]

I've been looking for a method similar to:

Obj.sendmethod)

but to access class constants. So if I have:

class MyObj
MY_CONSTANT_1
end

I want to access MyObj::MY_CONSTANT_1 by using a variable like foo =
MY_CONSTANT_1 and then MyObj::sendfoo), but obviously send is only
meant to work with methods and not constants.

Is there any way to do this? I've looked but am having difficulty
finding anything.

Thanks,
Marli

I am slightly confused by your example, but you definitely need
Module#const_get: http://www.ruby-doc.org/core/classes/Module.html#M001689

irb(main):001:0> class A
irb(main):002:1> B = 1
irb(main):003:1> end
=> 1
irb(main):004:0> A.const_getB)
=> 1

-Justin

 

[Brian Candler]

class MyObj

 

[Marli Ba]

I am slightly confused by your example, but you definitely need
Module#const_get:
http://www.ruby-doc.org/core/classes/Module.html#M001689

irb(main):001:0> class A
irb(main):002:1> B = 1
irb(main):003:1> end
=> 1
irb(main):004:0> A.const_getB)
=> 1

-Justin

Ah, sorry for the confusion. const_get is exactly what I was looking
for though, thanks!