Rails - Jul 2006 - Binding text_field et al to object.attribute.name

Hi all,

Suppose I have a PurchaseItem model which refers to Product model...

class Product < ActiveRecord::Base
   has_many :purchase_items
end

class PurchaseItem < ActiveRecord::Base
   belongs_to :product
end

To keep things simple, one of the attribute of the Product model is  
title.

On the interface, I have a textfield that I need to bind with  
@purchase_item.product.title.

text_field ''purchase_item'', ''product.title''
doesn''t work for me.

How to achieve this using Rails 1.1.4? Does this feature exist by  
default in Edge?

Oh and one more thing, will it matter if the attribute is an  
ActiveRecord object or a value object like Money?

Thank you very much.

Regards,
John.

John Indra wrote:
> Suppose I have a PurchaseItem model which refers to Product model...
> 
> class Product < ActiveRecord::Base
>   has_many :purchase_items
> end
> 
> class PurchaseItem < ActiveRecord::Base
>   belongs_to :product
> end
> 
> To keep things simple, one of the attribute of the Product model is  title.
> 
> On the interface, I have a textfield that I need to bind with  
> @purchase_item.product.title.
> 
> text_field ''purchase_item'',
''product.title'' doesn''t work for me.
> 
> How to achieve this using Rails 1.1.4? Does this feature exist by  
> default in Edge?
Add to the PurchaseItem model methods:

def product_title
   product.title
end

def product_title= (t)
   product.title = t
end

Then you can use

text_field ''purchase_item'', ''product_title''

-- 
We develop, watch us RoR, in numbers too big to ignore.

On Jul 17, 2006, at 12:09 PM, Mark Reginald James wrote:
> Add to the PurchaseItem model methods:
>
> def product_title
>   product.title
> end
>
> def product_title= (t)
>   product.title = t
> end
>
> Then you can use
>
> text_field ''purchase_item'',
''product_title''
Of course I can do that. I was doing exactly that way before I made  
my post.
However, I feel that it''s kind of a messy hack.
Are you sure there is no ''better'' solution?

Thanks anyway

Best regards,
John

John Indra wrote:
> Are you sure there is no ''better'' solution?
Another option is http://dev.rubyonrails.com/ticket/2053

-- 
We develop, watch us RoR, in numbers too big to ignore.