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@kenmazaika
Created May 31, 2015 01:15
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module ObjectTracker
module ClassMethods
def track_method(method_name)
alias_method :"#{method_name}_without_tracking", method_name
define_method :"#{method_name}_with_tracking" do |*splat|
params = self.class.instance_method(:"#{method_name}_without_tracking").parameters.collect(&:last)
self.send(:"#{method_name}_without_tracking", *splat) # do method first
self.track_event!(method_name, Hash[*(params.zip(splat).flatten)]) # then track
end
alias_method method_name, :"#{method_name}_with_tracking"
end
end
end
class Dog
include ObjectTracker
extend ObjectTracker::ClassMethods
attr_accessor :name
def initialize(name)
@name = name
end
def go(yolo, swag)
puts "Going to #{yolo}'s house #{swag}"
end
def track_event!(method_name, attrs)
# attrs is a hash of the arguments that the method was called with
# convert them
attrs = attrs.keys.collect {|k| [k, attrs[k]].join("=") }
# Do whatever you want with the instance variables, or the arguments the method was called with
puts "<#{self.class}.#{method_name} name=#{@name} #{attrs.join(" ")}>"
end
end
Dog.track_method(:go)
Dog.new("Sparky").go('Ryan', "Swag")
puts
jon = Dog.new("Jon")
jon.go("Bark", "Woof")
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