Ruby module_function, invoking module's private method, invoked in class method style on module shows error
- by Jignesh
test_module.rb
module MyModule
def module_func_a
puts "module_func_a invoked"
private_b
end
module_function :module_func_a
private
def private_b
puts "private_b invoked"
end
end
class MyClass
include MyModule
def test_module
module_func_a
end
end
Invoking module function from class
c = MyClass.new
c.test_module
Output 1:
$ ruby test_module.rb
module_func_a invoked
private_b invoked
Invoking module function on module in class method style
ma = MyModule.module_func_a
Output 2:
module_func_a invoked
test_module.rb:5:in `module_func_a': undefined local variable or method `private_b' for MyModule:Module (NameError)
from test_module.rb:31
As can be seen from the Output 1 and Output 2 when including the module in a class, no issue occurs when a module's private method gets invoked from a module function
while in case when directly invoking the module function on the module in class method style the module's private method, invoked from module function, is not found.
Can anybody make me understand the reason behind above behavior and whether invoking module function (which in turn invokes module's private method) on module in class method style is possible or not? If possible, then what rectifications are required in my code to do the same?
Thanks,
Jignesh
