From: andrew <noname@...>
Date: 2007-03-19T05:20:05+09:00
Subject: Re: accessing methods from the blocks caller

I'm experiencing the issue using Rails.  I wanted to leave mention of Rails 
out of my post as I figured it was simply a Ruby issue, but perhaps not.

class MyController < ApplicationController
    def some_action
        render :update do |page|
            render_to_string        # getting an error that render_to_string 
is undefined
        end
    end
end

I fix this by doing this...
def some_action
    str = render_to_string
    render :update to |page|
        # use str in the block
    end
end

So for anybody with a bit of rails knowledge, do you know what's going on? 
I can ask this in a rails group now if you think it's off topic.

Thanks again,
Andrew

"eden li" <eden.li@gmail.com> wrote in message 
news:1174204947.155558.226150@d57g2000hsg.googlegroups.com...
> In the three cases I could think of, "method1" was always available to
> the block.  AFAIK, the block you pass to #accept_block no matter where
> it is will always be bound to the lexical context you call it in,
> meaning that 'method1' will always be available unless you do
> something special when you call the block.
>
> Maybe it'll help if you list the source for #accept_block and the
> exact error you're getting.
>
> # case 1, 'accept_block' defined in a super class
> class S
>  def foo; yield; end
> end
>
> # case 2, 'accept_block' defined in an included module
> module M
>  def bar; yield; end
> end
>
> # case 3, 'accept_block' defined in some other class
> class D
>  def baz; yield; end
> end
>
> class C < S
>  include M
>  def m1; 'hi'; end
>  def test_foo; foo { m1 }; end
>  def test_bar; bar { m1 }; end
>  def test_baz; D.new.baz { m1 }; end
> end
>
>>> c = C.new
> => #<C:0xb7c396e8>
>>> c.test_foo
> => "hi"
>>> c.test_bar
> => "hi"
>>> c.test_baz
> => "hi"
>
> On Mar 18, 1:30 pm, "andrew" <non...@noname.com> wrote:
>> Here's my question... if I have a method that accepts a block and I want 
>> to
>> call a method of the class I'm in, in that block, how do I do it?  See 
>> the
>> comment below in the example.  Should make that sentence a bit clearer. 
>> :)
>>
>> class Test
>>     def method1
>>     end
>>
>>     def method2
>>         accept_block do # accept_block is not part of the Test class
>>             ...
>>             method1    # I want to call method1 from the class I'm in, 
>> but
>> I'm getting undefined method for method1
>>             ...
>>         end
>>     end
>> end
>>
>> I understand why I would be getting this error, but I don't know how to 
>> fix
>> it.  Is there a way to access the caller in the block in order to access 
>> the
>> method of it?  Kernel.caller is the closest I found, but it's not what I
>> want.
>
>