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RAILS_ROOT = "#{File.dirname(__FILE__)}/.." unless defined?(RAILS_ROOT) |
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module Rails |
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class << self |
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def boot! |
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unless booted? |
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preinitialize |
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pick_boot.run |
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end |
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end |
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def booted? |
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defined? Rails::Initializer |
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end |
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def pick_boot |
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(vendor_rails? ? VendorBoot : GemBoot).new |
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end |
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def vendor_rails? |
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File.exist?("#{RAILS_ROOT}/vendor/rails") |
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end |
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def preinitialize |
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load(preinitializer_path) if File.exists?(preinitializer_path) |
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end |
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|
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def preinitializer_path |
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"#{RAILS_ROOT}/config/preinitializer.rb" |
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end |
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end |
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class Boot |
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def run |
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load_initializer |
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Rails::Initializer.run(:set_load_path) |
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end |
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end |
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class VendorBoot < Boot |
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def load_initializer |
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require "#{RAILS_ROOT}/vendor/rails/railties/lib/initializer" |
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end |
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end |
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class GemBoot < Boot |
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def load_initializer |
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self.class.load_rubygems |
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load_rails_gem |
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require 'initializer' |
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end |
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def load_rails_gem |
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if version = self.class.gem_version |
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gem 'rails', version |
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else |
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gem 'rails' |
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end |
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rescue Gem::LoadError => load_error |
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$stderr.puts %(Missing the Rails #{version} gem. Please `gem install -v=#{version} rails`, update your RAILS_GEM_VERSION setting in config/environment.rb for the Rails version you do have installed, or comment out RAILS_GEM_VERSION to use the latest version installed.) |
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exit 1 |
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end |
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|
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class << self |
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def rubygems_version |
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Gem::RubyGemsVersion if defined? Gem::RubyGemsVersion |
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end |
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|
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def gem_version |
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if defined? RAILS_GEM_VERSION |
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RAILS_GEM_VERSION |
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elsif ENV.include?('RAILS_GEM_VERSION') |
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ENV['RAILS_GEM_VERSION'] |
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else |
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parse_gem_version(read_environment_rb) |
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end |
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end |
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|
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def load_rubygems |
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require 'rubygems' |
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|
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unless rubygems_version >= '0.9.4' |
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$stderr.puts %(Rails requires RubyGems >= 0.9.4 (you have #{rubygems_version}). Please `gem update --system` and try again.) |
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exit 1 |
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end |
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rescue LoadError |
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$stderr.puts %(Rails requires RubyGems >= 0.9.4. Please install RubyGems and try again: http://rubygems.rubyforge.org) |
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exit 1 |
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end |
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def parse_gem_version(text) |
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$1 if text =~ /^[^#]*RAILS_GEM_VERSION\s*=\s*["']([!~<>=]*\s*[\d.]+)["']/ |
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end |
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private |
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def read_environment_rb |
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File.read("#{RAILS_ROOT}/config/environment.rb") |
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end |
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end |
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end |
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end |
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Rails.boot! |
