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Luca Scaljery

2008-Mar-02 17:25 UTC

Model equivalent for controllers/application.rb

Hi All

I have a couple of functions in my modules which are identical. I would
like to move them into a separate file and have them available in all
modules. For example, the controllers already have one, application.rb.
Do modules have something similar ? If not, what would be the best way
to do this ?

Thnx a lot
LuCa
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s.ross

2008-Mar-02 19:24 UTC

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Re: Model equivalent for controllers/application.rb

On Mar 2, 2008, at 9:25 AM, Luca Scaljery wrote:
>
> Hi All
>
> I have a couple of functions in my modules which are identical. I  
> would
> like to move them into a separate file and have them available in all
> modules. For example, the controllers already have one,  
> application.rb.
> Do modules have something similar ? If not, what would be the best way
> to do this ?
>
> Thnx a lot
> LuCa
> -- 
Create a new file ... call it lib/model_helpers.rb or something like  
that:

module ModelHelpers
   def identical_method
     # do some stuff
   end
end

Then in your model class:

class MyModel
   include ModelHelpers

   # more stuff
end

This should allow you to get the methods where you need them.

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AndyV

2008-Mar-03 16:53 UTC

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Re: Model equivalent for controllers/application.rb

Luca -- modules can include other modules so you can refactor in the
same way you already have.

On Mar 2, 12:25 pm, Luca Scaljery
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:> Hi All
>
> I have a couple of functions in my modules which are identical. I would
> like to move them into a separate file and have them available in all
> modules. For example, the controllers already have one, application.rb.
> Do modules have something similar ? If not, what would be the best way
> to do this ?
>
> Thnx a lot
> LuCa
> --
> Posted viahttp://www.ruby-forum.com/.--~--~---------~--~----~------------~-------~--~----~
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Luca Scaljery

2008-Mar-04 19:26 UTC

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Re: Model equivalent for controllers/application.rb

thanks a lot, I have it working now!!
LuCa
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Ilan Berci

2008-Mar-05 00:09 UTC

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Re: Model equivalent for controllers/application.rb

> 
> class MyModel
>    include ModelHelpers
> 
>    # more stuff
> end
> 
> This should allow you to get the methods where you need them.
Or one step further:

class ActiveRecord::Base
  include ModelHelpers
end

you can just open the big daddy yourself and mess with it if the helpers 
are going to be used by most of your models anyways, this will help you 
keep your individual model code dryer and give you something to talk 
about at your next party.

hth

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Luca Scaljery

2008-Mar-08 12:14 UTC

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Re: Model equivalent for controllers/application.rb

nice solution, so I just create a helpermodule which extends 
ActiveRecords, is that correct ?
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Nathan Esquenazi

2008-Mar-08 13:16 UTC

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Re: Model equivalent for controllers/application.rb

Way I would do it


# /config/initializers/record_extender.rb
require ''lib/extensions/active_record_extender''
ActiveRecord::Base.send( :include, ActiveRecordExtender )


# /lib/extensions/active_record_extender.rb
module Extensions
  module ActiveRecordExtender
    def shared_method
      # this method will be in every single model
    end
  end
end


# /app/models/example.rb
class Example < AR:Base
  def some_method
    shared_method # call to method from module
  end
end
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tatyree

2008-Mar-21 13:49 UTC

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Re: Model equivalent for controllers/application.rb

> Way I would do it
>
> # /config/initializers/record_extender.rb
> require ''lib/extensions/active_record_extender''
> ActiveRecord::Base.send( :include, ActiveRecordExtender )
>
> # /lib/extensions/active_record_extender.rb
> module Extensions
>   module ActiveRecordExtender
>     def shared_method
>       # this method will be in every single model
>     end
>   end
> end
>
> # /app/models/example.rb
> class Example < AR:Base
>   def some_method
>     shared_method # call to method from module
>   end
> end
Doesn''t work for me.  Mongrel chokes on startup:

./lib/extensions/active_record_extender.rb:1: Extensions is not a
module (TypeError)

Copied and pasted as is from the post.


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Rails - Mar 2008 - Model equivalent for controllers/application.rb

Model equivalent for controllers/application.rb

Re: Model equivalent for controllers/application.rb

Re: Model equivalent for controllers/application.rb

Re: Model equivalent for controllers/application.rb

Re: Model equivalent for controllers/application.rb

Re: Model equivalent for controllers/application.rb

Re: Model equivalent for controllers/application.rb

Re: Model equivalent for controllers/application.rb