From: ao tianlong <aotianlong.com@...>
Date: 2006-12-13T16:53:49+09:00
Subject: Re: how to add a method_missing method into ActiveRecord

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thank you

i find the error



original_method_missing(method_id,*prams,&block)

it's misspelled *params as prams

thank you again.

On 12/13/06, Alex Gutteridge <alexg@kuicr.kyoto-u.ac.jp> wrote:
>
> On 13 Dec 2006, at 14:47, ao tianlong wrote:
>
> >  1 class Book
> >  2 def method_missing(method_id,*params,&block)
> >  3 print 'original method missing'
> >  4 end
> >  5
> >  6 alias :original_method_missing :method_missing
> >  7 def method_missing(method_id,*params,&block)
> >  8 C(params[:comment])print 'my method missing'
> >  9 original_method_missing(method_id,*prams,&block)
> > 10 end
> > 11 end
> > 12
> > 13 book = Book.new
> > 14 book.tester
> >
> > its looks like work , but output is
> > thod missingmy method missingmy method missingmy method missingmy
> > method
> > missingmy method missingmy method missingmy method missingmy method
> > missingmy method missingmy method missingmy method missingmy method
> > missingmy method missingmy method missingmy method missingmy method
> > missingmy method missintest.rb:9:in `method_missing': stack level
> > too deep
> > (SystemStackError)
> >        from test.rb:9:in `method_missing'
> >        from test.rb:14
> >
> > any idia?
> >
>
> You are calling a missing method from within your new method_missing.
> Infinite recursion ensues.
>
> The following seems to work:
>
> irb(main):001:0> class Book
> irb(main):002:1> def method_missing(mtd,*arg,&blk)
> irb(main):003:2> puts "Original"
> irb(main):004:2> end
> irb(main):005:1> alias :original :method_missing
> irb(main):006:1> def method_missing(mtd,*arg,&blk)
> irb(main):007:2> puts "New"
> irb(main):008:2> original(mtd,*arg,&blk)
> irb(main):009:2> end
> irb(main):010:1> end
> => nil
> irb(main):011:0> Book.new.test
> New
> Original
> => nil
>
> Alex Gutteridge
>
> Bioinformatics Center
> Kyoto University
>
>
>
>

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