mirror of
https://github.com/rails/rails.git
synced 2022-11-09 12:12:34 -05:00
77 lines
2.4 KiB
Ruby
77 lines
2.4 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
require "pathname"
|
|
require "rails/version"
|
|
|
|
module Rails
|
|
module AppLoader # :nodoc:
|
|
extend self
|
|
|
|
RUBY = Gem.ruby
|
|
EXECUTABLES = ["bin/rails", "script/rails"]
|
|
BUNDLER_WARNING = <<EOS
|
|
Beginning in Rails 4, Rails ships with a `rails` binstub at ./bin/rails that
|
|
should be used instead of the Bundler-generated `rails` binstub.
|
|
|
|
If you are seeing this message, your binstub at ./bin/rails was generated by
|
|
Bundler instead of Rails.
|
|
|
|
You might need to regenerate your `rails` binstub locally and add it to source
|
|
control:
|
|
|
|
rails app:update:bin # Bear in mind this generates other binstubs
|
|
# too that you may or may not want (like yarn)
|
|
|
|
If you already have Rails binstubs in source control, you might be
|
|
inadverently overwriting them during deployment by using bundle install
|
|
with the --binstubs option.
|
|
|
|
If your application was created prior to Rails 4, here's how to upgrade:
|
|
|
|
bundle config --delete bin # Turn off Bundler's stub generator
|
|
rails app:update:bin # Use the new Rails executables
|
|
git add bin # Add bin/ to source control
|
|
|
|
You may need to remove bin/ from your .gitignore as well.
|
|
|
|
When you install a gem whose executable you want to use in your app,
|
|
generate it and add it to source control:
|
|
|
|
bundle binstubs some-gem-name
|
|
git add bin/new-executable
|
|
|
|
EOS
|
|
|
|
def exec_app
|
|
original_cwd = Dir.pwd
|
|
|
|
loop do
|
|
if exe = find_executable
|
|
contents = File.read(exe)
|
|
|
|
if contents =~ /(APP|ENGINE)_PATH/
|
|
exec RUBY, exe, *ARGV
|
|
break # non reachable, hack to be able to stub exec in the test suite
|
|
elsif exe.end_with?("bin/rails") && contents.include?("This file was generated by Bundler")
|
|
$stderr.puts(BUNDLER_WARNING)
|
|
Object.const_set(:APP_PATH, File.expand_path("config/application", Dir.pwd))
|
|
require File.expand_path("../boot", APP_PATH)
|
|
require "rails/commands"
|
|
break
|
|
end
|
|
end
|
|
|
|
# If we exhaust the search there is no executable, this could be a
|
|
# call to generate a new application, so restore the original cwd.
|
|
Dir.chdir(original_cwd) && return if Pathname.new(Dir.pwd).root?
|
|
|
|
# Otherwise keep moving upwards in search of an executable.
|
|
Dir.chdir("..")
|
|
end
|
|
end
|
|
|
|
def find_executable
|
|
EXECUTABLES.find { |exe| File.file?(exe) }
|
|
end
|
|
end
|
|
end
|