Forum: Ruby on Rails file_column plugin and instance variables

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67cb6fef42a83929955ce5a5b3f33f6e?d=identicon&s=25 Jon Smirl (Guest)
on 2006-01-17 07:20
(Received via mailing list)
To make file_column work I have to copy my local variable back to an
instance variables like this:

<% for product in @products
    @product = product %>
  <div class="catalogentry">
    <%= image_tag url_for_file_column('product', 'image_url') %></p>

This is needed because file_column specifically looks for the instance
version of the variable.

  def url_for_file_column(object, method, subdir=nil)
    case object
    when String, Symbol
      object = instance_variable_get("@#{object.to_s}")

Is this normal or is there some way to fix this in file_column?

Jon Smirl
C204883ecbdf04c9a5bc9b024f5ed575?d=identicon&s=25 Bill Pennington (Guest)
on 2006-01-17 07:35
(Received via mailing list)
Check out the Wiki page for a better explanation/solution.

On Jan 16, 2006, at 9:41 PM, Jon Smirl wrote:

> _______________________________________________
> Rails mailing list

- Bill
4bd34a2216dc8bdbf1f017f64e4d59e8?d=identicon&s=25 Kyle Maxwell (Guest)
on 2006-01-18 02:52
(Received via mailing list)
On 1/16/06, Bill Pennington <> wrote:
> > <% for product in @products
> >       object = instance_variable_get("@#{object.to_s}")
> >
IIRC, file_column trunk cheats and lets you pass in the object itself:

<%=url_for_file_column product, "image" %>

Also, you could just do what I do and:

<% for @product in @products %>

Kyle Maxwell
Chief Technologist
E Factor Media // FN Interactive
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