1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
require 'pathname'
module Rails
module AppRailsLoader
RUBY = File.join(*RbConfig::CONFIG.values_at("bindir", "ruby_install_name")) + RbConfig::CONFIG["EXEEXT"]
EXECUTABLES = ['bin/rails', 'script/rails']
def self.exec_app_rails
original_cwd = Dir.pwd
until exe = find_executable
# 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) and return if Pathname.new(Dir.pwd).root?
# Otherwise keep moving upwards in search of a executable.
Dir.chdir('..')
end
contents = File.read(exe)
# This is the Rails executable, let's use it
if contents =~ /(APP|ENGINE)_PATH/
exec RUBY, exe, *ARGV
# This is a Bundler binstub. Stop and explain how to upgrade.
elsif exe =~ /bin\/rails$/ && contents =~ /This file was generated by Bundler/
$stderr.puts <<-end_bin_upgrade_warning
Looks like your app's ./bin/rails is a stub that was generated by Bundler.
In Rails 4, your app's bin/ directory contains executables that are versioned
like any other source code, rather than stubs that are generated on demand.
Here's how to upgrade:
bundle config --delete bin # Turn off Bundler's stub generator
rake rails:update:bin # Use the new Rails 4 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
end_bin_upgrade_warning
Object.const_set(:APP_PATH, File.expand_path('config/application', Dir.pwd))
require File.expand_path('../boot', APP_PATH)
require 'rails/commands'
end
rescue SystemCallError
# could not chdir, no problem just return
end
def self.find_executable
EXECUTABLES.find { |exe| File.exists?(exe) }
end
end
end
|
