Rails - May 2010 - how-to display an image living outside the public directory

I''m trying to display an image (chart) that lives outside the public
directory in RAILS_ROOT/private.  

The chart contains confidential information and so can''t live in
/public
or any sub-directories of /public.

The chart needs to be displayed from a partial.  The first display of
the page containing the partial is an html render.  Subsequently, the
user can select a different chart causing an ajax call which replaces
the content of the image-containing dom element in the partial with a
new chart image.

Any thoughts / pointers are much appreciated!

Best regards,
Bill

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bill walton wrote:
> I''m trying to display an image (chart) that lives outside the
public
> directory in RAILS_ROOT/private.
You probably looking for send_file:

http://railsapi.com/doc/rails-v2.3.5/classes/ActionController/Streaming.html#M001587
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Hi Rob,

On Mon, May 3, 2010 at 2:11 PM, Robert Walker
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:
> bill walton wrote:
> > I''m trying to display an image (chart) that lives outside the
public
> > directory in RAILS_ROOT/private.
>
> You probably looking for send_file:
>
Yeah.  I was trying to use send_data and it wasn''t working.  Not sure
why,
but send_file does.  I got it working but gmail doesn''t send my own
posts to
me so couldn''t reply that I''d solved it.  Thanks much for
replying.  I
appreciate it.

Best regards,
Bill

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You could have PrivateImagesController with `show` method

and you will get your images through /private_images/image_name.png

in `show` method

    (check permissions)
    send_file
"#{RAILS_ROOT}/private_images_folder/#{params[:image_name]}"


send_file is really slow and will work only when there''s not a lot of
users
requesting files


In Nginx you could use x-send-file option or something, which makes
send_file work much better. I didn''t try that though.

On Tue, May 4, 2010 at 1:08 AM, bill walton
<bwalton.im-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> I''m trying to display an image (chart) that lives outside the
public
> directory in RAILS_ROOT/private.
>
> The chart contains confidential information and so can''t live in
/public
> or any sub-directories of /public.
>
> The chart needs to be displayed from a partial.  The first display of
> the page containing the partial is an html render.  Subsequently, the
> user can select a different chart causing an ajax call which replaces
> the content of the image-containing dom element in the partial with a
> new chart image.
>
> Any thoughts / pointers are much appreciated!
>
> Best regards,
> Bill
>
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>
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