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rails--rails/railties/lib/rails.rb
schneems baea5d69be Use Rails to Render Default Index Page
This is an alternative implementation to #7771 thanks to the advice of @spastorino

Rails is a dynamic framework that serves a static index.html by default. One of my first questions ever on IRC was solved by simply deleting my public/index.html file. This file is a source of confusion when starting as it over-rides any set "root" in the routes yet it itself is not listed in the routes. By making the page dynamic by default we can eliminate this confusion.

This PR moves the static index page to an internal controller/route/view similar to `rails/info`. When someone starts a rails server, if no root is defined, this route will take over and the "dynamic" index page from rails/welcome_controller will be rendered. These routes are only added in development. If a developer defines a root in their routes, it automatically takes precedence over this route and will be rendered, with no deleting of files required. 

In addition to removing this source of confusion for new devs, we can now use Rails view helpers to build and render this page. While not the primary intent, the added value of "dogfooding" should not be under-estimated.

The prior PR #7771 had push-back since it introduced developer facing files. This PR solves all of the same problems, but does not have any new developer facing files (it actually removes one). 

cc/ @wsouto, @dickeyxxx, @tyre, @ryanb, @josevalim, @maxim, @subdigital, @steveklabnik

ATP Railties and Actionpack.
2012-12-10 16:15:04 -08:00

115 lines
3.2 KiB
Ruby

require 'rails/ruby_version_check'
require 'pathname'
require 'active_support'
require 'active_support/core_ext/kernel/reporting'
require 'active_support/core_ext/array/extract_options'
require 'rails/application'
require 'rails/version'
require 'rails/deprecation'
require 'active_support/railtie'
require 'action_dispatch/railtie'
# For Ruby 1.9, UTF-8 is the default internal and external encoding.
silence_warnings do
Encoding.default_external = Encoding::UTF_8
Encoding.default_internal = Encoding::UTF_8
end
module Rails
autoload :Info, 'rails/info'
autoload :InfoController, 'rails/info_controller'
autoload :WelcomeController, 'rails/welcome_controller'
class << self
attr_accessor :application, :cache, :logger
# The Configuration instance used to configure the Rails environment
def configuration
application.config
end
# Rails.queue is the application's queue. You can push a job onto
# the queue by:
#
# Rails.queue.push job
#
# A job is an object that responds to +run+. Queue consumers will
# pop jobs off of the queue and invoke the queue's +run+ method.
#
# Note that depending on your queue implementation, jobs may not
# be executed in the same process as they were created in, and
# are never executed in the same thread as they were created in.
#
# If necessary, a queue implementation may need to serialize your
# job for distribution to another process. The documentation of
# your queue will specify the requirements for that serialization.
def queue
application.queue
end
def initialize!
application.initialize!
end
def initialized?
application.initialized?
end
def backtrace_cleaner
@backtrace_cleaner ||= begin
# Relies on Active Support, so we have to lazy load to postpone definition until AS has been loaded
require 'rails/backtrace_cleaner'
Rails::BacktraceCleaner.new
end
end
def root
application && application.config.root
end
def env
@_env ||= begin
ENV["RAILS_ENV"] ||= ENV["RACK_ENV"] || "development"
ActiveSupport::StringInquirer.new(ENV["RAILS_ENV"])
end
end
def env=(environment)
@_env = ActiveSupport::StringInquirer.new(environment)
end
# Returns all rails groups for loading based on:
#
# * The Rails environment;
# * The environment variable RAILS_GROUPS;
# * The optional envs given as argument and the hash with group dependencies;
#
# groups assets: [:development, :test]
#
# # Returns
# # => [:default, :development, :assets] for Rails.env == "development"
# # => [:default, :production] for Rails.env == "production"
def groups(*groups)
hash = groups.extract_options!
env = Rails.env
groups.unshift(:default, env)
groups.concat ENV["RAILS_GROUPS"].to_s.split(",")
groups.concat hash.map { |k,v| k if v.map(&:to_s).include?(env) }
groups.compact!
groups.uniq!
groups
end
def version
VERSION::STRING
end
def public_path
application && Pathname.new(application.paths["public"].first)
end
end
end