Rails - May 2006 - Extending Rails plugins?

Gents,

I''m using the acts_as_taggable rails plugin (not gem), and would like
to
add some additional methods to it. For example, the find_tagged_with  
methods essentially does a find tag in a list (effectively an OR), while  
I''d like to implement a find_tagged_with_all method that would
implement
an AND (so if I specified 4 tags, it would only return items that were  
tagged with all four inclusively).

Is there a proper way to extend a Rails plugin so that problems are  
minimized downstream when the plugin is upgraded? Or should I just dive  
right in the plugin code and hack away?

FYR, I want to add a method to the following module:
=module SingletonMethods
        def find_tagged_with(list)
          find_by_sql([
            "SELECT #{table_name}.* FROM #{table_name}, tags, taggings
" +
            "WHERE #{table_name}.#{primary_key} = taggings.taggable_id
" +
            "AND taggings.taggable_type = ? " +
            "AND taggings.tag_id = tags.id AND tags.name IN (?)",
            acts_as_taggable_options[:taggable_type], list
          ])
        end
      end
=
Thanks!

B.A.
--
B.A. Baracus: I thought you weren''t crazy no more?
Murdock: Only on paper. 
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I put mine in a module, TagExtension (tag_extension.rb) in the /lib 
folder. Vaguely remember there was something on rails-weenie about it too.
HTH

BA Baracus wrote:
> Gents,
>
> I''m using the acts_as_taggable rails plugin (not gem), and would
like to
> add some additional methods to it. For example, the find_tagged_with  
> methods essentially does a find tag in a list (effectively an OR), while  
> I''d like to implement a find_tagged_with_all method that would
implement
> an AND (so if I specified 4 tags, it would only return items that were  
> tagged with all four inclusively).
>
> Is there a proper way to extend a Rails plugin so that problems are  
> minimized downstream when the plugin is upgraded? Or should I just dive  
> right in the plugin code and hack away?
>
> FYR, I want to add a method to the following module:
> => module SingletonMethods
>         def find_tagged_with(list)
>           find_by_sql([
>             "SELECT #{table_name}.* FROM #{table_name}, tags, taggings
" +
>             "WHERE #{table_name}.#{primary_key} = taggings.taggable_id
" +
>             "AND taggings.taggable_type = ? " +
>             "AND taggings.tag_id = tags.id AND tags.name IN (?)",
>             acts_as_taggable_options[:taggable_type], list
>           ])
>         end
>       end
> =>
> Thanks!
>
> B.A.
> --
> B.A. Baracus: I thought you weren''t crazy no more?
> Murdock: Only on paper. 
>

On Saturday, May 06, 2006, at 7:32 PM, Chris T wrote:
>I put mine in a module, TagExtension (tag_extension.rb) in the /lib
>folder. Vaguely remember there was something on rails-weenie about it too.
>HTH
Hmm...ok, so I''ve created my own tag_extension.rb file in /lib, and it
follows the same convention as the plugin:

module ActiveRecord
  module Acts #:nodoc:
    module Taggable #:nodoc:
    	module SingletonMethods
         #my additional methods here
    	end
    end
  end
end

This operates under the assumption that Ruby modules are open, just as  
classes are, which based on a few irb tests they seem to be.

Now, how can I get my code to see it? The documentation says /lib files  
are loaded automagically, but this doesn''t see to be appearing in my  
models that call acts_as_taggable.

Thanks very much for your help!

B.A.
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On Sunday, May 07, 2006, at 7:38 PM, BA Baracus wrote:
>Now, how can I get my code to see it? The documentation says /lib files
>are loaded automagically, but this doesn''t see to be appearing in
my
>models that call acts_as_taggable.
I''ll answer myself here....turns out that /lib is added a load  
directory, but the files within /lib aren''t automatically loaded. To do
this, I had to require my file in config/environment.rb:

# require plugin extension
require ''my_extension''


Thanks for the help!

B.A.

--
B.A. Baracus: I thought you weren''t crazy no more?
Murdock: Only on paper.

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