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tag: v4.0.0
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ARGV << '--help' if ARGV.empty?
aliases = {
"g" => "generate",
"d" => "destroy",
"c" => "console",
"s" => "server",
"db" => "dbconsole",
"r" => "runner"
}
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")
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"
In addition to those, there are:
application Generate the Rails application code
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")
All commands can be run with -h (or --help) for more information.
EOT
command = ARGV.shift
command = aliases[command] || command
case command
when 'generate', 'destroy', 'plugin'
require 'rails/generators'
if command == 'plugin' && ARGV.first == 'new'
require "rails/commands/plugin_new"
else
require APP_PATH
Rails.application.require_environment!
Rails.application.load_generators
require "rails/commands/#{command}"
end
when 'console'
require 'rails/commands/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
ARGV.shift if ARGV.first && ARGV.first[0] != '-'
require APP_PATH
Rails.application.require_environment!
Rails::Console.start(Rails.application, options)
when 'server'
# Change to the application's path if there is no config.ru file in current dir.
# This allows us to run `rails server` from other directories, but still get
# the main config.ru and properly set the tmp directory.
Dir.chdir(File.expand_path('../../', APP_PATH)) unless File.exists?(File.expand_path("config.ru"))
require 'rails/commands/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
when 'dbconsole'
require 'rails/commands/dbconsole'
Rails::DBConsole.start
when 'application', 'runner'
require "rails/commands/#{command}"
when 'new'
if %w(-h --help).include?(ARGV.first)
require 'rails/commands/application'
else
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
when '--version', '-v'
ARGV.unshift '--version'
require 'rails/commands/application'
when '-h', '--help'
puts help_message
else
puts "Error: Command '#{command}' not recognized"
if %x{rake #{command} --dry-run 2>&1 } && $?.success?
puts "Did you mean: `$ rake #{command}` ?\n\n"
end
puts help_message
exit(1)
end
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