Rails - Nov 2005 - how to prevent image_tag helper throwing exception if the url is null or blank?

If I store the path/filename of an image in the database how do I 
prevent "image_tag" helper from throwing an exception if a
filename/path
has not been set?

<%= image_tag @product.image %>
or
<%= image_tag url_for_file_column("product", "image")
%>

Many thanks, K.

Does this work?

<%= image_tag(@product.image) if @product.image %>

On 25 Nov 2005, at 3:51pm, Kris Leech wrote:
> If I store the path/filename of an image in the database how do I  
> prevent "image_tag" helper from throwing an exception if a
filename/
> path has not been set?
>
> <%= image_tag @product.image %>
> or
> <%= image_tag url_for_file_column("product",
"image") %>
>
> Many thanks, K.

On Nov 25, 2005, at 7:51 AM, Kris Leech wrote:
> If I store the path/filename of an image in the database how do I  
> prevent "image_tag" helper from throwing an exception if a
filename/
> path has not been set?
>
> <%= image_tag @product.image %>
> or
> <%= image_tag url_for_file_column("product",
"image") %>
>
> Many thanks, K.
Kris-

	You can use this:
> <%= image_tag @product.image rescue nil %>
> <%= image_tag url_for_file_column("product",
"image")  rescue nil %>

Cheers-
-Ezra Zygmuntowicz
WebMaster
Yakima Herald-Republic Newspaper
ezra-gdxLOakOTQ9oetBuM9ipNAC/G2K4zDHf@public.gmane.org
509-577-7732

i might do something like so...

<%= image_tag product.get_image, :border => 0 %>

class Product < ActiveRecord:Base
  ...
  # returns either the image (path/name stored in db)
  # or default image name if image is nil (null in db)
  def get_image
    # default_product_image.jpg in public/images directory
    (image.nil?) ? "default_product_image.jpg" : image
  end
end


On 11/25/05, Kris Leech
<krisleech-BSIDdvZawMx9qp0gCGiW7Q@public.gmane.org>
wrote:
>
> If I store the path/filename of an image in the database how do I
> prevent "image_tag" helper from throwing an exception if a
filename/path
> has not been set?
>
> <%= image_tag @product.image %>
> or
> <%= image_tag url_for_file_column("product",
"image") %>
>
> Many thanks, K.
>
>
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> Rails mailing list
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>

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