1 files changed, 100 insertions, 0 deletions
diff --git a/railties/lib/rails/commands/console/console_command.rb b/railties/lib/rails/commands/console/console_command.rb
new file mode 100644
index 0000000000..e35faa5b01
--- /dev/null
+++ b/railties/lib/rails/commands/console/console_command.rb
@@ -0,0 +1,100 @@
+# frozen_string_literal: true
+
+require "irb"
+require "irb/completion"
+
+require "rails/command/environment_argument"
+
+module Rails
+  class Console
+    module BacktraceCleaner
+      def filter_backtrace(bt)
+        if result = super
+          Rails.backtrace_cleaner.filter([result]).first
+        end
+      end
+    end
+
+    def self.start(*args)
+      new(*args).start
+    end
+
+    attr_reader :options, :app, :console
+
+    def initialize(app, options = {})
+      @app     = app
+      @options = options
+
+      app.sandbox = sandbox?
+      app.load_console
+
+      @console = app.config.console || IRB
+
+      if @console == IRB
+        IRB::WorkSpace.prepend(BacktraceCleaner)
+      end
+    end
+
+    def sandbox?
+      options[:sandbox]
+    end
+
+    def environment
+      options[:environment]
+    end
+    alias_method :environment?, :environment
+
+    def set_environment!
+      Rails.env = environment
+    end
+
+    def start
+      set_environment! if environment?
+
+      if sandbox?
+        puts "Loading #{Rails.env} environment in sandbox (Rails #{Rails.version})"
+        puts "Any modifications you make will be rolled back on exit"
+      else
+        puts "Loading #{Rails.env} environment (Rails #{Rails.version})"
+      end
+
+      if defined?(console::ExtendCommandBundle)
+        console::ExtendCommandBundle.include(Rails::ConsoleMethods)
+      end
+      console.start
+    end
+  end
+
+  module Command
+    class ConsoleCommand < Base # :nodoc:
+      include EnvironmentArgument
+
+      class_option :sandbox, aliases: "-s", type: :boolean, default: false,
+        desc: "Rollback database modifications on exit."
+
+      def initialize(args = [], local_options = {}, config = {})
+        console_options = []
+
+        # For the same behavior as OptionParser, leave only options after "--" in ARGV.
+        termination = local_options.find_index("--")
+        if termination
+          console_options = local_options[termination + 1..-1]
+          local_options = local_options[0...termination]
+        end
+
+        ARGV.replace(console_options)
+        super(args, local_options, config)
+      end
+
+      def perform
+        extract_environment_option_from_argument
+
+        # RAILS_ENV needs to be set before config/application is required.
+        ENV["RAILS_ENV"] = options[:environment]
+
+        require_application_and_environment!
+        Rails::Console.start(Rails.application, options)
+      end
+    end
+  end
+end