[Rails] Where to start?

[rails at agilemethods.net]

On 12/13/05, Igor Zaretsky <izaret at yahoo.com> wrote:
>
> I am currently reading "Programming Ruby" book.

Awesome book!

> One thing definetely screws up my sweet dreams: how to do validation?
> I know "if" and "else", but
>  where to put them?
>  in which folder?
>  how to pop up or display message?

Agile Web Development explains all of this.  Definitely get it!

In short validation/popup goes in the model like this:

validates_format_of   :image_url,
                       :with     => %r{^http:.+\.(gif|jpg|jpeg|png)$}i,
                       :message  => "mist be a URL for a GIF, JPG,  
JPEG, or PNG image"


> Is the book I am reading is the proper book for me at this time?
> What would you suggest me to read?