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
--
Kind Regards,
Rajinder Yadav
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On 10-10-09 09:16 PM, Rajinder Yadav wrote:> how can I get the following to work, what am I not understanding about > how modules work? > >i realized i posted to the rails thread instead of the ruby thread =P still if someone can please answer this, thanks! -- Kind Regards, Rajinder Yadav -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
On Sun, Oct 10, 2010 at 9:16 AM, Rajinder Yadav <devguy.ca-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> how can I get the following to work, what am I not understanding about how > modules work?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 -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
On 10-10-09 10:50 PM, botp wrote:> On Sun, Oct 10, 2010 at 9:16 AM, Rajinder Yadav<devguy.ca-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: >> how can I get the following to work, what am I not understanding about how >> modules work? > > 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 -- Kind Regards, Rajinder Yadav -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
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
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On 10-10-10 03:45 AM, Robert Pankowecki (rupert) wrote:> 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! -- Kind Regards, Rajinder Yadav -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.