78 lines
2.4 KiB
Ruby
78 lines
2.4 KiB
Ruby
# frozen_string_literal: true
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require "pathname"
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require "rails/version"
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module Rails
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module AppLoader # :nodoc:
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extend self
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RUBY = Gem.ruby
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EXECUTABLES = ["bin/rails", "script/rails"]
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BUNDLER_WARNING = <<EOS
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Beginning in Rails 4, Rails ships with a `rails` binstub at ./bin/rails that
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should be used instead of the Bundler-generated `rails` binstub.
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If you are seeing this message, your binstub at ./bin/rails was generated by
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Bundler instead of Rails.
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You might need to regenerate your `rails` binstub locally and add it to source
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control:
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rails app:update:bin # Bear in mind this generates other binstubs
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# too that you may or may not want (like yarn)
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If you already have Rails binstubs in source control, you might be
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inadvertently overwriting them during deployment by using bundle install
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with the --binstubs option.
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If your application was created prior to Rails 4, here's how to upgrade:
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bundle config --delete bin # Turn off Bundler's stub generator
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rails app:update:bin # Use the new Rails executables
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git add bin # Add bin/ to source control
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You may need to remove bin/ from your .gitignore as well.
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When you install a gem whose executable you want to use in your app,
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generate it and add it to source control:
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bundle binstubs some-gem-name
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git add bin/new-executable
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EOS
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def exec_app
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original_cwd = Dir.pwd
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loop do
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if exe = find_executable
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contents = File.read(exe)
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if /(APP|ENGINE)_PATH/.match?(contents)
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exec RUBY, exe, *ARGV
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break # non reachable, hack to be able to stub exec in the test suite
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elsif exe.end_with?("bin/rails") && contents.include?("This file was generated by Bundler")
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$stderr.puts(BUNDLER_WARNING)
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Object.const_set(:APP_PATH, File.expand_path("config/application", Dir.pwd))
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require File.expand_path("../boot", APP_PATH)
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require "rails/commands"
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break
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end
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end
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# If we exhaust the search there is no executable, this could be a
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# call to generate a new application, so restore the original cwd.
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Dir.chdir(original_cwd) && return if Pathname.new(Dir.pwd).root?
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# Otherwise keep moving upwards in search of an executable.
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Dir.chdir("..")
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end
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end
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def find_executable
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EXECUTABLES.find { |exe| File.file?(exe) }
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end
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end
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end
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