Rails - Apr 2006 - number_to_currency inside model

I was wondering if this is possible.

I have a model (Item) that contains products. These products have prices 
that I''d like to format using number_to_currency. Rather than doing
this
several times inside the view, I thought it might be nice to do it once 
inside the model.

The item table has an field called regular_price which holds a currency 
amount. I would like to do something like what''s below, but I get the 
following error message:

undefined method `number_to_currency'' for #<Item:0x2479430>


Here is the model.

class Item < ActiveRecord::Base
has_many :item_attributes, :order => ''a_order''

def regular_price
    number_to_currency(self)
  end
end

Not sure why it''s not finding the number_to_currency helper.

Thanks!


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

David:

number_to_currency is a Rails method defined in  
ActionView::Helpers::NumberHelper.

Here''s the link to the doc: http://api.rubyonrails.org/classes/ 
ActionView/Helpers/NumberHelper.html

Because it''s part of ActionView, it''s normally available to
View
objects but not Model objects.

I know it''s not the answer for which you''re hoping. Some might
argue
that a function that displays a formatted value belongs in the View  
layer rather than the Model layer. Others might argue against this!  
It would be nice to hear what people think about stuff like this.

Hope it helps,

-Anthony

On Apr 4, 2006, at 10:17 PM, David C. wrote:
> I was wondering if this is possible.
>
> I have a model (Item) that contains products. These products have  
> prices
> that I''d like to format using number_to_currency. Rather than
doing
> this
> several times inside the view, I thought it might be nice to do it  
> once
> inside the model.
>
> The item table has an field called regular_price which holds a  
> currency
> amount. I would like to do something like what''s below, but I get
the
> following error message:
>
> undefined method `number_to_currency'' for #<Item:0x2479430>
>
>
> Here is the model.
>
> class Item < ActiveRecord::Base
> has_many :item_attributes, :order => ''a_order''
>
> def regular_price
>     number_to_currency(self)
>   end
> end
>
> Not sure why it''s not finding the number_to_currency helper.
>
> Thanks!
>
>
> -- 
> Posted via http://www.ruby-forum.com/.
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