Rails - Jun 2007 - QUICK QUESTION: Method in Controller AND Helper

Hey,

Is there a way to write a method in the application controller and also
have it available as a helper method without rewriting it in the
application helper?

I''m pretty sure there is, but haven''t found the specifics on
how to do
this yet.

Joe

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I use this all the time;


  def current_user
    @current_user ||= session[:user] ? User.find_by_id(session[:user]) : 
nil
  end
  helper_method :current_user


Gokhan
www.sylow.net

Joe Peck wrote:
> Hey,
> 
> Is there a way to write a method in the application controller and also
> have it available as a helper method without rewriting it in the
> application helper?
> 
> I''m pretty sure there is, but haven''t found the specifics
on how to do
> this yet.
> 
> Joe

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>   def current_user
>     @current_user ||= session[:user] ? User.find_by_id(session[:user]) : 
> nil
>   end
>   helper_method :current_user
Thanks, now THAT''S what I''m talking about.

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Is it possible to have method(s) in application_helper.rb available
for controllers, just like for views?
Actually my method is current_user too :D and looks pretty similar,
but I''d like it in application_helper.rb...

On Jun 19, 9:55 pm, Joe Peck
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
> >   def current_user
> >     @current_user ||= session[:user] ? User.find_by_id(session[:user])
:
> > nil
> >   end
> >   helper_method :current_user
>
> Thanks, now THAT''S what I''m talking about.
>
> --
> Posted viahttp://www.ruby-forum.com/.

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ahoge wrote:
> Is it possible to have method(s) in application_helper.rb available
> for controllers, just like for views?
> Actually my method is current_user too :D and looks pretty similar,
> but I''d like it in application_helper.rb...
define the method in your helper, then include your helper at the top of 
the controller:

class ApplicationHelper
  def method_to_use_in_controller
    ...
  end
end

class ApplicationController
  include ApplicationHelper
end

that''s the easiest way to do it ... but if you have a lot of methods in
your ApplicationHelper you may want to pull it out into a module that 
gets included into both the helper and controller.

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James Schementi schrieb:
> ahoge wrote:
>> Is it possible to have method(s) in application_helper.rb available
>> for controllers, just like for views?
>> Actually my method is current_user too :D and looks pretty similar,
>> but I''d like it in application_helper.rb...
> 
> define the method in your helper, then include your helper at the top of 
> the controller:
> 
> class ApplicationHelper
>   def method_to_use_in_controller
>     ...
>   end
> end
> 
> class ApplicationController
>   include ApplicationHelper
> end
> 
> that''s the easiest way to do it ... but if you have a lot of
methods in
> your ApplicationHelper you may want to pull it out into a module that 
> gets included into both the helper and controller.
> 
Hi James,

instead of mixin in a whole helper module I''d declare the Helper method
as module_function like:

module SomeHelper
  1000.times do |index|
    define_method(:"waste_#{index}") { index ** 2 }
  end
  def some_method(*some_args)
    some_args.inspect
  end

  module_function :some_method
end

In your controller you can then do:

class Somes < ApplicationController
  def some_action
    SomeHelper.some_method
  end
end

Don''t pollute your controller... ;)

Regards
Florian


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oh wow.
"module_function"

i''ve seen it, but never paid any attention.
thanks,

I always end up declaring them as self.*blah*

will use this, deffo.

Florian Aßmann wrote:
> instead of mixin in a whole helper module I''d declare the Helper
method
> as module_function like:
> 
> module SomeHelper
>   1000.times do |index|
>     define_method(:"waste_#{index}") { index ** 2 }
>   end
>   def some_method(*some_args)
>     some_args.inspect
>   end
> 
>   module_function :some_method
> end
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Thanks
On Jul 15, 2007, at 7:58 AM, James Schementi wrote:
>
> ahoge wrote:
>> Is it possible to have method(s) in application_helper.rb available
>> for controllers, just like for views?
>> Actually my method is current_user too :D and looks pretty similar,
>> but I''d like it in application_helper.rb...
>
> define the method in your helper, then include your helper at the  
> top of
> the controller:
>
> class ApplicationHelper
>   def method_to_use_in_controller
>     ...
>   end
> end
>
> class ApplicationController
>   include ApplicationHelper
> end
>
> that''s the easiest way to do it ... but if you have a lot of  
> methods in
> your ApplicationHelper you may want to pull it out into a module that
> gets included into both the helper and controller.
>
> -- 
> Posted via http://www.ruby-forum.com/.
>
> >

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