How to write constant inside module?

Question

module Test1 module Test2 def self.included(base) # Where can I declare constant ? How ? base.extend ClassMethods base.class_eval do # named scopes end end end end class abc include Test1::Test2 end

Where can I declare constant ? How ?

emboss · Accepted Answer · 2011-08-04 09:32:12Z

I'm not sure I understand - did you mean this:

module Test1 module Test2 CONSTANT = 5 def self.included(base) # Where can I declare constant ? How ? base.extend ClassMethods base.class_eval do # named scopes end end module ClassMethods end end end class A include Test1::Test2 end puts A::CONSTANT # => 5

rookieRailer · Accepted Answer · 2011-08-04 22:20:53Z

0

In Ruby, a variable that starts with a capital letter, is considered a constant. So, you might use a variable as Pi = 3.14 to declare a constant value.

answered Aug 4, 2011 at 22:20

rookieRailer

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2 Comments

Tim Over a year ago

Not 'starts with' but is all CAPS

olivervbk Over a year ago

@Tim, rookieRailer is correct. Ruby Constants start_with capital letters. Classes are actually constants in Ruby.

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