Sortable domain list

Gemfile

@@ -48,6 +48,9 @@ gem 'nprogress-rails', '~> 0.1.3.1'
 # for pagination
 gem 'kaminari', '~> 0.16.1'
 
+# for searching
+gem 'ransack', '~> 1.3.0'
+
 group :assets do
   # See https://github.com/sstephenson/execjs#readme for more supported runtimes
   gem 'therubyracer',  platforms: :ruby

Gemfile.lock

@@ -128,6 +128,8 @@ GEM
       cliver (~> 0.3.1)
       multi_json (~> 1.0)
       websocket-driver (>= 0.2.0)
+    polyamorous (1.1.0)
+      activerecord (>= 3.0)
     polyglot (0.3.5)
     powerpack (0.0.9)
     pry (0.10.1)
@@ -158,6 +160,12 @@ GEM
     rainbow (2.0.0)
     raindrops (0.13.0)
     rake (10.3.2)
+    ransack (1.3.0)
+      actionpack (>= 3.0)
+      activerecord (>= 3.0)
+      activesupport (>= 3.0)
+      i18n
+      polyamorous (~> 1.1)
     rb-fsevent (0.9.4)
     rb-inotify (0.9.5)
       ffi (>= 0.5.0)
@@ -266,6 +274,7 @@ DEPENDENCIES
   pry (~> 0.10.1)
   pry-byebug (~> 1.3.3)
   rails (= 4.1.4)
+  ransack (~> 1.3.0)
   rspec-rails (~> 3.0.2)
   sass-rails (~> 4.0.3)
   sdoc (~> 0.4.0)

app/controllers/admin/domains_controller.rb

@@ -1,5 +1,6 @@
 class Admin::DomainsController < ApplicationController
   def index
-    @domains = Domain.order(:name).page(params[:page])
+    @q = Domain.search(params[:q])
+    @domains = @q.result.page(params[:page])
   end
 end

app/views/admin/domains/index.haml

@@ -6,13 +6,13 @@
       %table.table.table-striped.table-bordered.table-condensed
         %tr
           %th{class: 'col-xs-2'}
-            = t('shared.name')
+            = sort_link(@q, 'name')
           %th{class: 'col-xs-2'}
-            = t('shared.registrar')
+            = sort_link(@q, 'registrar_name', t('shared.registrar'))
           %th{class: 'col-xs-2'}
-            = t('shared.owner')
+            = sort_link(@q, 'owner_contact_international_address_name', t('shared.owner'))
           %th{class: 'col-xs-1'}
-            = t('shared.valid_to')
+            = sort_link(@q, 'valid_to', t('shared.valid_to'))
           %th{class: 'col-xs-1'}
             = t('shared.action')
         - @domains.each do |x|