From: Robert Klemme <shortcutter@...>
Date: 2010-10-28T17:30:44+09:00
Subject: Re: Defining nested Method in single class

On Thu, Oct 28, 2010 at 9:28 AM, Arun Kumar <jakheart001@gmail.com> wrote:

> I created a class with in class it showing Error like "class definition
> in method body",
> """""""""""If its is means, why not in methods ?"""""""""""

That's just the way it is: you can define nested methods in a method.
The feature isn't too useful though.

If you want to define a class in a method (beware, it happens every
time the method is called!) you can do

def foo
  Class.new do
    def bar; 123; end
  end
end

irb(main):006:0> foo.new
=> #<#<Class:0x10154094>:0x10153d14>
irb(main):007:0> foo.tap {|cl| p cl; cl.new.bar}
#<Class:0x1011f140>
=> #<Class:0x1011f140>
irb(main):008:0> foo.tap {|cl| p cl; cl.new.bar}
#<Class:0x10021d3c>
=> #<Class:0x10021d3c>

> 1. May be my question is wrong ? can u please tell me how to call method
> defined within method of class ?

You know it already, don't you?  Please look at your code.

>  """""
>        def AdavanceConfuse.Class_method1
>    puts "this is class_method1"
>    def AdavanceConfuse.class_method1_attribute_class_method
>      puts "this is class_method1_attribute_class_method"
>    end
>  end
> """"""
>
> How to call the class_method1_attribute_class_method in the above code
> and how it internally ,the request will be handled in ruby ?

It's just defined and called like any other class method.  The only
difference with nested definitions is the point in time when the
method is created (i.e. not when the interpreter executes the class
definition but when someone calls the method containing the
definition).

> 2. How i can access a class' method defined with in class ?

See above.

Cheers

robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/