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Running rails with mongrel for a specific sub directory

Tim — Mon, 10 Sep 2007 13:20:54 +0000

I've started using mongrel for running rails apps with apache2 and mod_proxy , it works like a charm and allows you to run multiple rails apps and mongrel instances on one server.

Your proxy setup looks like this in your httpd.conf or vhost.conf

80>
ServerName myapp.com
ServerAlias www.myapp.com

ProxyPass /myapp http://www.myapp.com:8000/
ProxyPassReverse /myapp http://www.myapp.com:8000
ProxyPreserveHost on

Then in your environment.rb add:

ActionController::AbstractRequest.relative_url_root = '/myapp'

This will make ActionController rewrite the proper URL for your rails application.

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Derived Columns in ActiveRecord

Tim — Mon, 16 Oct 2006 23:41:10 +0000

Sometimes it's useful to have a field in your ActiveRecord implentation that isn't actually selected in your query or present in your table. One way to acheive this is by simply adding a new accessor to your Model class.

Let's say we have a table named Customers that has a firstname and lastname column but we would like to also have a fullname column available to us when doing things like iterating through Customer objects in our view. One way is to add it directly to our Customers class ( app/model/customer.rb in your rails app).

class Customer def fullname
@fullname = self.firstname + ' ' + self.lastname
end

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