Rails - May 2006 - DOM values in ERB Variable?

I am trying to post the current brower window sizes into the user''s  
session file with a form_remote_tag call as follows:

<%= form_remote_tag :url => url_for(:controller => "welcome",
:action
=> "login", :iheight => "1", :iwidth =>
"2") %>

But how do I get the DOM data for window.innerHeight and  
window.innerWidth into an ruby ERB variable such that I can put into  
the helper, and POST them in to the controller? Or is there a better  
way? I feel like I am missing some really simple here.

Anyone come up against this, and / or know the answer? If so, please  
help.

--ejw

Eric Woodward
Email: ejw@statewood.com

Eric Woodward wrote:
> I am trying to post the current brower window sizes into the
user''s
> session file with a form_remote_tag call as follows:
> 
> <%= form_remote_tag :url => url_for(:controller =>
"welcome", :action
> => "login", :iheight => "1", :iwidth =>
"2") %>
> 
> But how do I get the DOM data for window.innerHeight and
> window.innerWidth into an ruby ERB variable such that I can put into
> the helper, and POST them in to the controller? Or is there a better
> way? I feel like I am missing some really simple here.
> 
> Anyone come up against this, and / or know the answer? If so, please
> help.
> 
> --ejw
> 
> Eric Woodward
> Email: ejw@statewood.com
Since Rails doesn''t actually run on the client, rails only has the info
that was included in the request to go on, and screen size is not in the 
request that browser make to your app.

So...

You need to render the page first and then use javascript to trigger an 
AJAX call that posts some variables back to the server.  Something like

Ajax.Request(''/users/screen_size?width=''+screenWidth()+''height=''+screenHeight());

-- 
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