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-rw-r--r--railties/lib/rails/commands/commands_tasks.rb180
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diff --git a/railties/lib/rails/commands/commands_tasks.rb b/railties/lib/rails/commands/commands_tasks.rb
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--- a/railties/lib/rails/commands/commands_tasks.rb
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-require 'rails/commands/rake_proxy'
-
-module Rails
- # This is a class which takes in a rails command and initiates the appropriate
- # initiation sequence.
- #
- # Warning: This class mutates ARGV because some commands require manipulating
- # it before they are run.
- class CommandsTasks # :nodoc:
- include Rails::RakeProxy
-
- attr_reader :argv
-
- HELP_MESSAGE = <<-EOT
-Usage: rails COMMAND [ARGS]
-
-The most common rails commands are:
- generate Generate new code (short-cut alias: "g")
- console Start the Rails console (short-cut alias: "c")
- server Start the Rails server (short-cut alias: "s")
- test Run tests (short-cut alias: "t")
- dbconsole Start a console for the database specified in config/database.yml
- (short-cut alias: "db")
- new Create a new Rails application. "rails new my_app" creates a
- new application called MyApp in "./my_app"
-
-All commands can be run with -h (or --help) for more information.
-
-In addition to those commands, there are:
-EOT
-
- ADDITIONAL_COMMANDS = [
- [ 'destroy', 'Undo code generated with "generate" (short-cut alias: "d")' ],
- [ 'plugin new', 'Generates skeleton for developing a Rails plugin' ],
- [ 'runner',
- 'Run a piece of code in the application environment (short-cut alias: "r")' ]
- ]
-
- COMMAND_WHITELIST = %w(plugin generate destroy console server dbconsole runner new version help test)
-
- def initialize(argv)
- @argv = argv
- end
-
- def run_command!(command)
- command = parse_command(command)
-
- if COMMAND_WHITELIST.include?(command)
- send(command)
- else
- run_rake_task(command)
- end
- end
-
- def plugin
- require_command!("plugin")
- end
-
- def generate
- generate_or_destroy(:generate)
- end
-
- def destroy
- generate_or_destroy(:destroy)
- end
-
- def console
- require_command!("console")
- options = Rails::Console.parse_arguments(argv)
-
- # RAILS_ENV needs to be set before config/application is required
- ENV['RAILS_ENV'] = options[:environment] if options[:environment]
-
- # shift ARGV so IRB doesn't freak
- shift_argv!
-
- require_application_and_environment!
- Rails::Console.start(Rails.application, options)
- end
-
- def server
- set_application_directory!
- require_command!("server")
-
- Rails::Server.new.tap do |server|
- # We need to require application after the server sets environment,
- # otherwise the --environment option given to the server won't propagate.
- require APP_PATH
- Dir.chdir(Rails.application.root)
- server.start
- end
- end
-
- def test
- require_command!("test")
- end
-
- def dbconsole
- require_command!("dbconsole")
- Rails::DBConsole.start
- end
-
- def runner
- require_command!("runner")
- end
-
- def new
- if %w(-h --help).include?(argv.first)
- require_command!("application")
- else
- exit_with_initialization_warning!
- end
- end
-
- def version
- argv.unshift '--version'
- require_command!("application")
- end
-
- def help
- write_help_message
- write_commands ADDITIONAL_COMMANDS + formatted_rake_tasks
- end
-
- private
-
- def exit_with_initialization_warning!
- puts "Can't initialize a new Rails application within the directory of another, please change to a non-Rails directory first.\n"
- puts "Type 'rails' for help."
- exit(1)
- end
-
- def shift_argv!
- argv.shift if argv.first && argv.first[0] != '-'
- end
-
- def require_command!(command)
- require "rails/commands/#{command}"
- end
-
- def generate_or_destroy(command)
- require 'rails/generators'
- require_application_and_environment!
- Rails.application.load_generators
- require_command!(command)
- end
-
- # Change to the application's path if there is no config.ru file in current directory.
- # This allows us to run `rails server` from other directories, but still get
- # the main config.ru and properly set the tmp directory.
- def set_application_directory!
- Dir.chdir(File.expand_path('../../', APP_PATH)) unless File.exist?(File.expand_path("config.ru"))
- end
-
- def require_application_and_environment!
- require APP_PATH
- Rails.application.require_environment!
- end
-
- def write_help_message
- puts HELP_MESSAGE
- end
-
- def write_commands(commands)
- width = commands.map { |name, _| name.size }.max || 10
- commands.each { |command| printf(" %-#{width}s %s\n", *command) }
- end
-
- def parse_command(command)
- case command
- when '--version', '-v'
- 'version'
- when '--help', '-h'
- 'help'
- else
- command
- end
- end
- end
-end