If you find yourself scratching your head, wondering why that mod_rewrite rule isn't working as you'd expect you can add a logger by simply adding the following to your vhost:

RewriteLog '/var/log/apache2/rewrite_log' RewriteLogLevel 4 

Once added...

So I just ran into an issue where I am trying to recreate a trigger, I drop the trigger and get an error telling me the trigger already exists e.g.

DROP TRIGGER IF EXISTS test_trigger;

I could overcome this error by specifying the table name e.g.

After a recent server crash our MongoDB was refusing to restart, if you tail the logs:

tail -f /var/log/mongodb/mongodb.log 

and you see something along the lines of:

Mon Dec 10 13:58:39 [initandlisten] exception in initAndListen std::exception:...

Heres a quick and dirty monkeypatch for adding default Interpolations into I18n (v0.6.1).

module I18n
  class << self
    attr_accessor :default_interpolations

    def interpolate_hash_with_default_interpolations(string, values)
      values ||= {}
      values = (default_interpolations || {}).merge(values)

      interpolate_hash_without_default_interpolations(string, values)
    end

    alias_method_chain :interpolate_hash, :default_interpolations

  end
end

In my case I'm adding the defaults in using a before filter, allowing me to set a customer's currency e.g.

def set_default_interpolations
  I18n.default_interpolations = { currency: current_currency.symbol }
end

I was just asked how you would split your Rails routes file into multiple files for instance in the case of having an application frontend and a set of routes serving your application's API.

Now, I have a number of applications which work this way and utilize routing constraints to determine which routes should be used but splitting them into more manageable individual files is a nice idea so, my first thought...