uninitialized constant error

[Zhao Yi]

I have three ruby classes, see below:

1. base_cls.rb

File.dirname(__FILE__)+'/cls_factory'
class BaseCls

def self.say
ClsFactory.say
end
end
BaseCls.say

2. sub_cls.rb

require File.dirname(__FILE__)+'/base_cls'

class SubCls < BaseCls
end

3. cls_factory.rb

require File.dirname(__FILE__)+'/sub_cls'

class ClsFactory
def self.get_cls
SubCls.new
end
end

When I run base_cls.rb, I got this error:

base_cls.rb:5:in `say': uninitialized constant BaseCls::ClsFactory
(NameError)

I don't understand why this error happens? Can anyone help me on this?

thanks.

 

[Stefan Lang]

I have three ruby classes, see below:

1. base_cls.rb

File.dirname(__FILE__)+'/cls_factory'
class BaseCls

def self.say
ClsFactory.say
end
end
BaseCls.say

2. sub_cls.rb

require File.dirname(__FILE__)+'/base_cls'

class SubCls < BaseCls
end

3. cls_factory.rb

require File.dirname(__FILE__)+'/sub_cls'

class ClsFactory
def self.get_cls
SubCls.new
end
end

When I run base_cls.rb, I got this error:

base_cls.rb:5:in `say': uninitialized constant BaseCls::ClsFactory
(NameError)

I don't understand why this error happens? Can anyone help me on this?

Maybe you meant to prefix the first line in base_cls.rb with "require"?

Stefan

 

[Zhao Yi]

Maybe you meant to prefix the first line in base_cls.rb with "require"?

Stefan

Oh, sorry, I forgot to type the 'require'. But the problem is still
there.