From: Fernando Perez <pedrolito@...>
Date: 2010-07-30T05:38:34+09:00
Subject: Problem with a lambda not executing immediately

Hi,

I'm using the paperclip plugin for one of my rails app, but my problem
is pure Ruby. I'm not good enough with Ruby and lambdas so I need your
advice.

Here is the code I am trying to make work:

class Asset < ActiveRecord::Base

  has_attached_file :data, :styles => {
    :theora => [:format => :ogv, :processors => lambda {|a| a.video? ?
[:video_converter] : []}}]
}

end


What fails is the lambda, because in Paperclip behind the scenes this is
what happens:

@var = style.processors.inject(something) do |file, processor|
...
end

style.processors has received the lambda defined earlier.


And I get the following error message:

NoMethodError (undefined method `inject' for #<Proc:0x455d864>)


So how can I fix it, and after that which book or resources can I read
to get proficient in such dynamic coding practice? Currently in use
blocks all the time ([array].each { ...}) without really mastering them.

Thanks for your support
-- 
Posted via http://www.ruby-forum.com/.