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Monday, 16 November 2015

Rails 2 to 4 UpGradation (Initial Level Settings)

Steps to upgrade the rails from 2 to 4 (Initial Level Settings)

  • Use latest ruby version first which is compatible with rails 4
  • Upgrade your Gems
    • Change versions for Gems into Gemfile .
    • Find alternative for gems which have been deprecated.
    • Comment some below gems if you have into you Gemfile
      • gem "mongrel"
      • gem "cgi_multipart_eof_fix" 
      • gem "fastercsv", '1.5.0'
      • gem “debugger"
    • Remove versions for these two basic Gems
      • gem 'mysql2'
      • gem 'rake'
  • Comment all the mime initializers in file config/initializers/mime_types.rb
  • Add config.egger_load in all rails environments in files config/environments/*
    • config.eager_load = true
  • Change match keyword from file routes.rb to get

You will able to run rails server from console