On Tue, 30 Jan 2007 21:06:14 +0900
Santosh R patil <santosh / antiztech.com> wrote:

> Hello ,
> 
> I am new to this ruby on rails, Help me

Better to try the Rails mailing list rather than the Ruby one.

 http://groups.google.com/group/rubyonrails-talk

> I have a view which has two tags, one is file_field and other submit
> button.
> 
> How to check whether file is browser before submitting the form

This is really a JavaScript question if you want to do it
before submitting the form.

HTH,
Dominic