FIle module.rb
module CardExpiry
def check_expiry value
return true
end
end
file include.rb
#raise File.dirname(__FILE__).inspect
require "#{File.dirname(__FILE__)}/module.rb"
module Include
include CardExpiry
def self.function
raise (check_expiry 1203).inspect
end
end
calling
Include::function
is this possible ?
Error trigger when calling :
`function': undefined method `check_expiry' for Include:Module (NoMethodError)
You stumbled over the difference of include and extend.
include makes the method in the included module available to instances of your classextend makes the methods in the included module available in the classWhen defining a method with self.method_name and you access self within that method, self is bound to the current class.
check_expiry, however, is included and thus only available on the instance side.
To fix the problem either extend CardExpiry, or make check_expiry a class method.
I've looked at your problem in a bit more detail, and the issue is your module.rb file:
module CardExpiry
def self.check_expiry value
return true
end
end
First, there was an end missing from the file - both def and module need to be closed.
Second, the magical self. in the def line turns the method into a pseudo-global function - this answer explains it better than I can.
Furthermore, to call the method, you need to use:
raise (CardExpiry::check_expiry 1203).inspect
