# class Bundler::Deployment

### Public Class Methods

define_task(context, task_method = :task, opts = {}) click to toggle source

    # File lib/bundler/deployment.rb, line 10
        def self.define_task(context, task_method = :task, opts = {})
          if defined?(Capistrano) && context.is_a?(Capistrano::Configuration)
            context_name = "capistrano"
            role_default = "{:except => {:no_release => true}}"
            error_type = ::Capistrano::CommandError
          else
            context_name = "vlad"
            role_default = "[:app]"
            error_type = ::Rake::CommandFailedError
          end

          roles = context.fetch(:bundle_roles, false)
          opts[:roles] = roles if roles

          context.send :namespace, :bundle do
            send :desc, <<-DESC
              Install the current Bundler environment. By default, gems will be \
              installed to the shared/bundle path. Gems in the development and \
              test group will not be installed. The install command is executed \
              with the --deployment and --quiet flags. If the bundle cmd cannot \
              be found then you can override the bundle_cmd variable to specify \
              which one it should use. The base path to the app is fetched from \
              the :latest_release variable. Set it for custom deploy layouts.

              You can override any of these defaults by setting the variables shown below.

              N.B. bundle_roles must be defined before you require 'bundler/#{context_name}' \
              in your deploy.rb file.

                set :bundle_gemfile,  "Gemfile"
                set :bundle_dir,      File.join(fetch(:shared_path), 'bundle')
                set :bundle_flags,    "--deployment --quiet"
                set :bundle_without,  [:development, :test]
                set :bundle_with,     [:mysql]
                set :bundle_cmd,      "bundle" # e.g. "/opt/ruby/bin/bundle"
                set :bundle_roles,    #{role_default} # e.g. [:app, :batch]
            DESC
            send task_method, :install, opts do
              bundle_cmd     = context.fetch(:bundle_cmd, "bundle")
              bundle_flags   = context.fetch(:bundle_flags, "--deployment --quiet")
              bundle_dir     = context.fetch(:bundle_dir, File.join(context.fetch(:shared_path), "bundle"))
              bundle_gemfile = context.fetch(:bundle_gemfile, "Gemfile")
              bundle_without = [*context.fetch(:bundle_without, [:development, :test])].compact
              bundle_with    = [*context.fetch(:bundle_with, [])].compact
              app_path = context.fetch(:latest_release)
              if app_path.to_s.empty?
                raise error_type.new("Cannot detect current release path - make sure you have deployed at least once.")
              end
              args = ["--gemfile #{File.join(app_path, bundle_gemfile)}"]
              args << "--path #{bundle_dir}" unless bundle_dir.to_s.empty?
              args << bundle_flags.to_s
              args << "--without #{bundle_without.join(" ")}" unless bundle_without.empty?
              args << "--with #{bundle_with.join(" ")}" unless bundle_with.empty?

              run "cd #{app_path} && #{bundle_cmd} install #{args.join(" ")}"
            end
          end
        end