Wrong root on image_tag, include_tags, etc

On my dev setup, generated routes are mysteriously pointing 开发者_开发技巧to my public www server.

[yields]

<script src="http://www.mysite.com//javascripts/prototype.js?1265304231" type="text/javascript"></script> 
<script src="http://www.mysite.com//javascripts/effects.js?1265304231" type="text/javascript"></script> 
<script src="http://www.mysite.com//javascripts/dragdrop.js?1265304231" type="text/javascript"></script> 
<script src="http://www.mysite.com//javascripts/controls.js?1273647885" type="text/javascript"></script> 
<script src="http://mysite.opzi.com//javascripts/application.js?1273611341" type="text/javascript"></script>

Where is this option set? Can't find it for the life of me.

One way this would happen is if you set ActionController::Base.asset_host to point to your public server in environment.rb.

Just since no one has provided a way to troubleshoot this:

The problem is likely an extra slash in one of your configs. asset_host is prepended to all asset tags generated programmatically, so using ERB:

<%= stylesheet_link_tag :defaults %>

will give you the equivalent of:

<%= "<link href='#{ActionController::Base.asset_host}/stylesheets/defaults.css' media='screen' rel='stylesheet' type='text/css' />" %>

To check the contents of asset_host just print it out somewhere in one of your pages:

asset_host is set to: "<%= ActionController::Base.asset_host %>"

I would suspect you will get something back like http://www.mysite.com/. The problem is the ending slash. It should rather be set to http://www.mysite.com. Now it is just a matter of tracking down the setting in your configs. An easy way would just be to search for http://www.mysite.com/ in your source to find the relevant setting mighty fast!

If you want to override it just in the current process, you can set asset_host to whatever you want:

ActionController::Base.asset_host = "http://www.mysite.com"

You should check your config/environment.rb and config/environment/development.rb files.

Look specifically for any asset_host tags. From guides.rubyonrails.org:

asset_host provides a string that is prepended to all of the URL-generating helpers in AssetHelper. This is designed to allow moving all javascript, CSS, and image files to a separate asset host.

For more information, see http://guides.rubyonrails.org/configuring.html

In case you're using Facebooker, it might be callback_url setting in facebooker.yml config file that is affecting ActionController::Base.asset_host value and corrupting your routes.