Hello ,
I am having an rails application,in which I need a css file in such a way that its property can be changed by ruby code. ex. background_color :<%= ruby code that return background color %>
So a user can set its css property and will be applicable to only that user like a theme.
Thanks!
Check out this tutorial on using the SASS engine to dynamically change CSS.
Check out this screencast which explains how to set up dynamic CSS files using ERB (the Rails templating system) http://nubyonrails.com/system/images/css-erb-small.mov
If you just need something simple, then you could do in your layout:
<head>
....
<% unless current_user.theme.nil? %>
<style>
body{
background:<%= current_user.theme.background_color%>;
}
</style>
</head>
<% end %>
If you're starting a new project, SASS is the way to go, and probably is the way to go if you have sufficient time. If just a couple of entries, it might not be bad to do it in the HTML.
Note: I feel a little dirty about this, but it'll work.