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How to use load_rubygems method of Project.Rails Package

Best Rr_ruby code snippet using Project.Rails.load_rubygems

boot.rb

Source:boot.rb

...59    end60  end61  class GemBoot < Boot62    def load_initializer63      self.class.load_rubygems64      load_rails_gem65      require 'initializer'66    end67    def load_rails_gem68      if version = self.class.gem_version69        gem 'rails', version70      else71        gem 'rails'72      end73    rescue Gem::LoadError => load_error74      if load_error.message =~ /Could not find RubyGem rails/75        STDERR.puts %(Missing the Rails #{version} gem. Please `gem install -v=#{version} rails`, update your RAILS_GEM_VERSION setting in config/environment.rb for the Rails version you do have installed, or comment out RAILS_GEM_VERSION to use the latest version installed.)76        exit 177      else78        raise79      end80    end81    class << self82      def rubygems_version83        Gem::RubyGemsVersion rescue nil84      end85      def gem_version86        if defined? RAILS_GEM_VERSION87          RAILS_GEM_VERSION88        elsif ENV.include?('RAILS_GEM_VERSION')89          ENV['RAILS_GEM_VERSION']90        else91          parse_gem_version(read_environment_rb)92        end93      end94      def load_rubygems95        min_version = '1.3.2'96        require 'rubygems'97        unless rubygems_version >= min_version98          $stderr.puts %Q(Rails requires RubyGems >= #{min_version} (you have #{rubygems_version}). Please `gem update --system` and try again.)99          exit 1100        end101      rescue LoadError102        $stderr.puts %Q(Rails requires RubyGems >= #{min_version}. Please install RubyGems and try again: http://rubygems.rubyforge.org)103        exit 1104      end105      def parse_gem_version(text)106        $1 if text =~ /^[^#]*RAILS_GEM_VERSION\s*=\s*["']([!~<>=]*\s*[\d.]+)["']/107      end108      private...

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