I want to call some_instance_method from some_class_method. In the following code, the class method is being called from the instance method.
class Foo
def self.some_class_method
puts self
end
def some_instance_method
self.class.some_class_method
end
end
Does what you want to do really make sense? Which instance should the instance method be called on? If it doesn't matter, you can do this:
class Foo
def self.some_class_method
new.some_instance_method
puts self
end
def some_instance_method
self.class.some_class_method
end
end
This will cause an infinite loop, of course.
To call an instance method you need to have that object already instantiated somewhere, you can't call an instance method without an object.
def self.some_class_method
puts self.first.some_instance_method
end
Something like this should work
You need to pass the instance you want to be the recipient of the call to the class method. So the new code is:
class Foo
def self.some_class_method(instance)
instance.some_other_instance_method
puts self
end
def some_instance_method
self.class.some_class_method(self)
end
end
Notice that the class method is calling 'some_other_instance_method'. If the class method were to call the same method that called it, it would enter an endless loop.
