how can I get the following to work, what am I not understanding about how modules work?
module MakeMethod def self.make_method( name ) define_method( name ) do |count| puts "you called method #{name.to_s}" puts "the count is #{count}" end end end
class Person
include MakeMethod
make_method :hello make_method :bye
def initialize( name ) @name = name end
def greet puts "Hello! I'm #{@name}" end
end
i realized i posted to the rails thread instead of the ruby thread =P still if someone can please answer this, thanks!
there are many ways, but i usually start as simple as possible, creating modules by fxn. classes simple as possible
# we have module that defines method module MakeMethod def make_method( name ) define_method( name ) do |count| puts "you called method #{name.to_s}" puts "the count is #{count}" end end end
# we have module that modifies a class and creates corr methods module MethodMaker class << self include MakeMethod end
make_method :hello make_method :bye
end
# we create class, as simple as possible class Person
def initialize( name ) @name = name end
def greet puts "Hello! I'm #{@name}" end
end
# we create person class. it works j=Person.new "rajin"
# but hello method does not work yet since we've not defined it yet on person class # j.hello 1 => will err here
# now we modify person class Person include MethodMaker end
# the new methods now work j.hello 1 j.bye 1
best regards -botp
what i would like to do is be able to use make_method from class Person, like:
class Person include MethodMaker
make_method :hello make_method :bye
end
You should read about the difference between `include' and `extend' keywords.
module MakeMethod def make_method( name ) define_method( name ) do |count| puts "you called method #{name.to_s}" puts "the count is #{count}" end end end
class Person extend MakeMethod make_method :hello end
Robert Pankowecki
Thanks Robert for pointing this out!