Rails - Apr 2006 - Controller can''t find helper?????!!!!!????

I have a controller named xyzController under app/controllers

I have a helper class named xyzHelper under app/helpers.

Shouldn''t I be able to call methods from xyzHelper inside of 
xyzController without any problems?

Thanks,
Wes

-- 
Posted via http://www.ruby-forum.com/.

>From Agile Rails: "If a controller is named BlogController, it will
automatically look for a helper MODULE called BlogHelper in the file
blog_helper.rb in the app/helpers directory.

So the answer is yes, IF: you have a helper MODULE called ZyzHelper in
the file xyz_helper.rb in the app/helpers directory.

Michael

Wes Gamble wrote:
> I have a controller named xyzController under app/controllers
> 
> I have a helper class named xyzHelper under app/helpers.
> 
> Shouldn''t I be able to call methods from xyzHelper inside of 
> xyzController without any problems?
No. Helpers define methods that can be used from the view, not the 
controller.

-- 
Philip Ross
http://tzinfo.rubyforge.org/ -- DST-aware timezone library for Ruby

Here''s my module:

module ESimplyHelper
  def get_protocol_and_server(request)
    request.protocol() + request.host_with_port()
  end
end

I am trying to call get_protocol_and_server from ESimplyController.

Is there something wrong with my module?

Thanks,
Wes

Michael Trier wrote:
>>From Agile Rails: "If a controller is named BlogController, it will
> automatically look for a helper MODULE called BlogHelper in the file
> blog_helper.rb in the app/helpers directory.
> 
> So the answer is yes, IF: you have a helper MODULE called ZyzHelper in
> the file xyz_helper.rb in the app/helpers directory.
> 
> Michael

-- 
Posted via http://www.ruby-forum.com/.

Philip,

That''s what I thought.

I think it''s confusing that you specify in the controller which helper 
the "view" gets to use when you use the "helper" keyword.

Seems like I should be able to "include" my helper and it would work, 
although that would be confusing in it''s own way.

Thanks,
Wes

Philip Ross wrote:
> Wes Gamble wrote:
>> I have a controller named xyzController under app/controllers
>> 
>> I have a helper class named xyzHelper under app/helpers.
>> 
>> Shouldn''t I be able to call methods from xyzHelper inside of 
>> xyzController without any problems?
> 
> No. Helpers define methods that can be used from the view, not the
> controller.
> 
> --
> Philip Ross
> http://tzinfo.rubyforge.org/ -- DST-aware timezone library for Ruby

-- 
Posted via http://www.ruby-forum.com/.

On 24/04/2006, at 23:33, Philip Ross wrote:
>> Shouldn''t I be able to call methods from xyzHelper inside of  
>> xyzController without any problems?
>
> No. Helpers define methods that can be used from the view, not the  
> controller.
I think you''re wrong, Phillip. I''m using my helper code in the
controller, but since helper is a module, you must address it as a  
module.
Example code from my controller:

   def index
     @my_controller_variable =  
MyControllerHelper::AClassInsideMyHelper.method(parameters)
     ...

I use helpers to store some constants and objects, that are used both  
by controller and view. All of it is view-related, but controllers  
set or get something from those helpers.


-- 

Rafa? Komorowski
komor@mac.com
GG: 4083718
<http://homepage.mac.com/komor/iblog/>

Rafal,

How do I call a function in my module if there is no class in my module

Module x
  def y
   ...
  end
end

What do I need to do in my controller in order to:

1) Get access to module X
2) Invoke method y?

I keep getting errors like:

undefined method `validate_and_format_url'' for ESimplyUtil:Module

Thanks,
Wes

Rafa? Komorowski wrote:
> On 24/04/2006, at 23:33, Philip Ross wrote:
> 
>>> Shouldn''t I be able to call methods from xyzHelper inside
of
>>> xyzController without any problems?
>>
>> No. Helpers define methods that can be used from the view, not the  
>> controller.
> 
> I think you''re wrong, Phillip. I''m using my helper code
in the
> controller, but since helper is a module, you must address it as a
> module.
> Example code from my controller:
> 
>    def index
>      @my_controller_variable >
MyControllerHelper::AClassInsideMyHelper.method(parameters)
>      ...
> 
> I use helpers to store some constants and objects, that are used both
> by controller and view. All of it is view-related, but controllers
> set or get something from those helpers.
> 
> 
> --
> 
> Rafa? Komorowski
> komor@mac.com
> GG: 4083718
> <http://homepage.mac.com/komor/iblog/>

-- 
Posted via http://www.ruby-forum.com/.

On 25/04/2006, at 01:31, Wes Gamble wrote:
> How do I call a function in my module if there is no class in my  
> module
Sure, you can. Here''s an example from the Ruby-book:

# module:
module Trig
   PI = 3.141592654
   def Trig.sin(x)
    puts "sinus #{x}"
   end
   def Trig.cos(x)
     puts "cosinus #{x}"
   end
end

# how to call a function from module:
Trig.sin(1.1)
Trig.cos(Trig::PI)


So just change your code to:

	module ESimplyHelper
	  def ESimplyHelper.get_protocol_and_server(request)
	    request.protocol() + request.host_with_port()
	  end
	end

and perhaps you can use it in your controller just like in the Ruby- 
book:
	ESimplyHelper.get_protocol_and_server(request)

or as in Rails way:
	ESimplyHelper::ESimplyHelper.get_protocol_and_server(request)

Give it a try.

-- 

Rafa? Komorowski
komor@mac.com
GG: 4083718
<http://homepage.mac.com/komor/iblog/>