From: Kevin Olbrich <kevin.olbrich@...>
Date: 2005-09-05T22:37:10+09:00
Subject: Re: Rails validate in models

Try this...

errors.add(:image_url,"Image not found - #{image_url}") 

:symbols are not the same as variables.

Ummm..... I'll take the free gift.

_Kevin

-----Original Message-----
From: BearItAll [mailto:bearitall@rassler.co.uk] 
Sent: Monday, September 05, 2005 06:06 AM
To: ruby-talk ML
Subject: Rails validate in models


Hello.

I have been working through the Rails book. The given examples in the
tutorial works, but I paused at the validation section in the model to make
sure I understood what was happening.

I have looked at various examples to find out what I am doing wrong, but as
far as I can see I am treating data fields the way you all are.

The example from a product model goes like this,

class Product < ActiveRecord::Base

	#various validation rules such as
	validates_presence_of :title, :description

#Then in the 'def validate' I tried to add a few examples of my own,  def
validate
	
	@thisImage = pathtoimages + :image_url
	errors.add(:image_url,"Image not found - #{:image_url}") unless
 		FileTest.exist?(@thisImage)

#where :image_url is just a file name.
 end

end

I tried various ways to get the data of :image_url, but only end up with the
variable name image_url.

:image_url.to_s

@thisImage = "../../public/images/#{:image_url}"

But each one in the 'error.add' example above gives,

"Image url Image not found - ../../public/images/image_url"

Help me with this and I'll snog your face off, alternatively you can select
a free gift off the trolley.


i