Refactor :bundle_roles so it works for cap and vlad, expand docs

1 files changed, 25 insertions, 10 deletions

diff --git a/lib/bundler/deployment.rb b/lib/bundler/deployment.rb
index f305f50d38..73ee604d2a 100644
--- a/lib/bundler/deployment.rb
+++ b/lib/bundler/deployment.rb
@@ -1,22 +1,37 @@
 module Bundler
   class Deployment
     def self.define_task(context, task_method = :task, opts = {})
+      if context.is_a?(Capistrano::Configuration)
+        context_name = "capistrano"
+        role_default = "{:except => {:no_release => true}}"
+      else
+        context_name = "vlad"
+        role_default = "[:app]"
+      end
+
+      roles = context.fetch(:bundle_roles, nil)
+      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. You can override any of \
-          these defaults by setting the variables shown below. If the bundle \
-          cmd cannot be found then you can override the bundle_cmd variable \
-          to specifiy which one it should use.
+          with the --deployment and --quiet flags. If the bundle cmd cannot \
+          be found then you can override the bundle_cmd variable to specifiy \
+          which one it should use.
+
+          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_cmd,          "bundle" # e.g. "/opt/ruby/bin/bundle"
-            set :bundle_roles,        {:except => {:no_release => true}} # e.g. [:app, :batch]
+            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_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")