multi attribute return

7 files changed, 27 insertions, 33 deletions

diff --git a/lib/chef/knife/client_show.rb b/lib/chef/knife/client_show.rb
index 5c2ffb4183..be6ab75b6a 100644
--- a/lib/chef/knife/client_show.rb
+++ b/lib/chef/knife/client_show.rb
@@ -22,6 +22,8 @@ class Chef
   class Knife
     class ClientShow < Knife
 
+      include Knife::Core::MultiAttributeRetrunOption
+
       deps do
         require 'chef/api_client'
         require 'chef/json_compat'
@@ -29,11 +31,6 @@ class Chef
 
       banner "knife client show CLIENT (options)"
 
-      option :attribute,
-        :short => "-a ATTR",
-        :long => "--attribute ATTR",
-        :description => "Show only one attribute"
-
       def run
         @client_name = @name_args[0]
 
diff --git a/lib/chef/knife/core/generic_presenter.rb b/lib/chef/knife/core/generic_presenter.rb
index 0866f10147..518252c7b8 100644
--- a/lib/chef/knife/core/generic_presenter.rb
+++ b/lib/chef/knife/core/generic_presenter.rb
@@ -22,6 +22,22 @@ class Chef
   class Knife
     module Core
 
+      # Allows includer knife commands to  return multiple attribute:
+      # e.g knife node show NAME -a ATTR1 -a ATTR2
+      module MultiAttributeRetrunOption
+        # :nodoc:
+        def self.included(includer)
+          includer.class_eval do
+            @attrs_to_show = []
+            option :attribute,
+              :short => "-a ATTR1 [-a ATTR2]",
+              :long => "--attribute ATTR1 [--attribute ATTR2] ",
+              :proc => lambda {|val| @attrs_to_show << val},
+              :description => "Show one or more attributes"
+          end
+        end
+      end
+
       #==Chef::Knife::Core::GenericPresenter
       # The base presenter class for displaying structured data in knife commands.
       # This is not an abstract base class, and it is suitable for displaying
diff --git a/lib/chef/knife/environment_show.rb b/lib/chef/knife/environment_show.rb
index a2b1636f47..2af5668990 100644
--- a/lib/chef/knife/environment_show.rb
+++ b/lib/chef/knife/environment_show.rb
@@ -22,18 +22,13 @@ class Chef
   class Knife
     class EnvironmentShow < Knife
 
+      include Knife::Core::MultiAttributeRetrunOption
+
       deps do
         require 'chef/environment'
         require 'chef/json_compat'
       end
 
-      @attrs_to_show = []
-      option :attribute,
-        :short => "-a [ATTR]",
-        :long => "--attribute [ATTR]",
-        :proc => lambda {|val| @attrs_to_show << val},
-        :description => "Show one or more attributes"
-
       banner "knife environment show ENVIRONMENT (options)"
 
       def run
diff --git a/lib/chef/knife/node_show.rb b/lib/chef/knife/node_show.rb
index 4b0be18890..da2a5940ba 100644
--- a/lib/chef/knife/node_show.rb
+++ b/lib/chef/knife/node_show.rb
@@ -24,6 +24,7 @@ class Chef
     class NodeShow < Knife
 
       include Knife::Core::NodeFormattingOptions
+      include Knife::Core::MultiAttributeRetrunOption
 
       deps do
         require 'chef/node'
@@ -32,13 +33,6 @@ class Chef
 
       banner "knife node show NODE (options)"
 
-      @attrs_to_show = []
-      option :attribute,
-        :short => "-a [ATTR]",
-        :long => "--attribute [ATTR]",
-        :proc => lambda {|val| @attrs_to_show << val},
-        :description => "Show one or more attributes"
-
       option :run_list,
         :short => "-r",
         :long => "--run-list",
diff --git a/lib/chef/knife/role_show.rb b/lib/chef/knife/role_show.rb
index 2f09794cbb..0b4ac50209 100644
--- a/lib/chef/knife/role_show.rb
+++ b/lib/chef/knife/role_show.rb
@@ -22,6 +22,8 @@ class Chef
   class Knife
     class RoleShow < Knife
 
+      include Knife::Core::MultiAttributeRetrunOption
+
       deps do
         require 'chef/node'
         require 'chef/json_compat'
@@ -29,10 +31,6 @@ class Chef
 
       banner "knife role show ROLE (options)"
 
-      option :attribute,
-        :short => "-a ATTR",
-        :long => "--attribute ATTR",
-        :description => "Show only one attribute"
 
       def run
         @role_name = @name_args[0]
diff --git a/lib/chef/knife/search.rb b/lib/chef/knife/search.rb
index 0d348d978a..eefde52395 100644
--- a/lib/chef/knife/search.rb
+++ b/lib/chef/knife/search.rb
@@ -23,6 +23,8 @@ class Chef
   class Knife
     class Search < Knife
 
+      include Knife::Core::MultiAttributeRetrunOption
+
       deps do
         require 'chef/node'
         require 'chef/environment'
@@ -54,11 +56,6 @@ class Chef
         :default => 1000,
         :proc => lambda { |i| i.to_i }
 
-      option :attribute,
-        :short => "-a ATTR",
-        :long => "--attribute ATTR",
-        :description => "Show only one attribute"
-
       option :run_list,
         :short => "-r",
         :long => "--run-list",
diff --git a/lib/chef/knife/user_show.rb b/lib/chef/knife/user_show.rb
index 5088210b4d..d923cafcec 100644
--- a/lib/chef/knife/user_show.rb
+++ b/lib/chef/knife/user_show.rb
@@ -22,6 +22,8 @@ class Chef
   class Knife
     class UserShow < Knife
 
+      include Knife::Core::MultiAttributeRetrunOption
+
       deps do
         require 'chef/user'
         require 'chef/json_compat'
@@ -29,11 +31,6 @@ class Chef
 
       banner "knife user show USER (options)"
 
-      option :attribute,
-        :short => "-a ATTR",
-        :long => "--attribute ATTR",
-        :description => "Show only one attribute"
-
       def run
         @user_name = @name_args[0]