Saari Development

I encountered a case where we needed to skip a filter as it was causing infinite redirection in a subclass. I found my answer in: Rails Filters Documentation

Filter chain skipping

Declaring a filter on a base class conveniently applies to its subclasses, but sometimes a subclass should skip some of its superclass’ filters:

  class ApplicationController < ActionController::Base
    before_filter :authenticate
    around_filter :catch_exceptions
  end

  class WeblogController < ApplicationController
    # Will run the :authenticate and :catch_exceptions filters.
  end

  class SignupController < ApplicationController
    # Skip :authenticate, run :catch_exceptions.
    skip_before_filter :authenticate
  end

  class ProjectsController < ApplicationController
    # Skip :catch_exceptions, run :authenticate.
    skip_filter :catch_exceptions
  end

  class ClientsController  :index
  end

I started doing my webapp on my brand new server (ubuntu linux 7.04) and when trying to run my first migration I got the following error message:

rake db:migrate(in /home/rizvi/projects/somewebapp)rake aborted!No such file or directory - /tmp/mysql.sock

Here is a useful mysql command to find out mysql defaults:

mysqladmin --print-defaultsmysqladmin would have been started with the following arguments:--port=3306 --socket=/var/run/mysqld/mysqld.sock

Here is what solved the problem:

sudo apt-get install libmysql-ruby

Note: The above is an alternative to :

sudo gem install mysql

Now I get:

rake db:migrate(in /home/rizvi/projects/somewebapp)rake aborted!Unknown database 'somewebapp_development'(See full trace by running task with --trace)

So I need to do the following:

mysqladmin -u root create somewebapp_development -pmysqladmin -u root create somewebapp_test -pmysqladmin -u root create somewebapp_production -p

Reference: RailsOnUbuntu