Added rails plugin code

Author: zenangst

Diff for: Gemfile

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+source "https://rubygems.org"
+
+# Declare your gem's dependencies in singleton_rails.gemspec.
+# Bundler will treat runtime dependencies like base dependencies, and
+# development dependencies will be added by default to the :development group.
+gemspec
+
+# Declare any dependencies that are still in development here instead of in
+# your gemspec. These might include edge Rails or gems from your path or
+# Git. Remember to move these dependencies to your gemspec before releasing
+# your gem to rubygems.org.
+
+# To use debugger
+# gem 'debugger'

Diff for: Gemfile.lock

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+PATH
+  remote: .
+  specs:
+    singleton-rails (0.0.1)
+      rails (~> 4.1.0.beta1)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    actionmailer (4.1.0.beta1)
+      actionpack (= 4.1.0.beta1)
+      actionview (= 4.1.0.beta1)
+      mail (~> 2.5.4)
+    actionpack (4.1.0.beta1)
+      actionview (= 4.1.0.beta1)
+      activesupport (= 4.1.0.beta1)
+      rack (~> 1.5.2)
+      rack-test (~> 0.6.2)
+    actionview (4.1.0.beta1)
+      activesupport (= 4.1.0.beta1)
+      builder (~> 3.1)
+      erubis (~> 2.7.0)
+    activemodel (4.1.0.beta1)
+      activesupport (= 4.1.0.beta1)
+      builder (~> 3.1)
+    activerecord (4.1.0.beta1)
+      activemodel (= 4.1.0.beta1)
+      activesupport (= 4.1.0.beta1)
+      arel (~> 5.0.0)
+    activesupport (4.1.0.beta1)
+      i18n (~> 0.6, >= 0.6.9)
+      json (~> 1.7, >= 1.7.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.1)
+      tzinfo (~> 1.1)
+    arel (5.0.0)
+    atomic (1.1.14)
+    builder (3.2.2)
+    erubis (2.7.0)
+    hike (1.2.3)
+    i18n (0.6.9)
+    json (1.8.1)
+    mail (2.5.4)
+      mime-types (~> 1.16)
+      treetop (~> 1.4.8)
+    mime-types (1.25.1)
+    minitest (5.2.2)
+    multi_json (1.8.4)
+    polyglot (0.3.3)
+    rack (1.5.2)
+    rack-test (0.6.2)
+      rack (>= 1.0)
+    rails (4.1.0.beta1)
+      actionmailer (= 4.1.0.beta1)
+      actionpack (= 4.1.0.beta1)
+      actionview (= 4.1.0.beta1)
+      activemodel (= 4.1.0.beta1)
+      activerecord (= 4.1.0.beta1)
+      activesupport (= 4.1.0.beta1)
+      bundler (>= 1.3.0, < 2.0)
+      railties (= 4.1.0.beta1)
+      sprockets-rails (~> 2.0.0)
+    railties (4.1.0.beta1)
+      actionpack (= 4.1.0.beta1)
+      activesupport (= 4.1.0.beta1)
+      rake (>= 0.8.7)
+      thor (>= 0.18.1, < 2.0)
+    rake (10.1.1)
+    sprockets (2.10.1)
+      hike (~> 1.2)
+      multi_json (~> 1.0)
+      rack (~> 1.0)
+      tilt (~> 1.1, != 1.3.0)
+    sprockets-rails (2.0.1)
+      actionpack (>= 3.0)
+      activesupport (>= 3.0)
+      sprockets (~> 2.8)
+    sqlite3 (1.3.8)
+    thor (0.18.1)
+    thread_safe (0.1.3)
+      atomic
+    tilt (1.4.1)
+    treetop (1.4.15)
+      polyglot
+      polyglot (>= 0.3.1)
+    tzinfo (1.1.0)
+      thread_safe (~> 0.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  singleton-rails!
+  sqlite3

Diff for: MIT-LICENSE

@@ -0,0 +1,20 @@
+Copyright 2014 YOURNAME
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Diff for: README.rdoc

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+= SingletonRails
+
+This project rocks and uses MIT-LICENSE.

Diff for: Rakefile

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+begin
+  require 'bundler/setup'
+rescue LoadError
+  puts 'You must `gem install bundler` and `bundle install` to run rake tasks'
+end
+
+require 'rdoc/task'
+
+RDoc::Task.new(:rdoc) do |rdoc|
+  rdoc.rdoc_dir = 'rdoc'
+  rdoc.title    = 'SingletonRails'
+  rdoc.options << '--line-numbers'
+  rdoc.rdoc_files.include('README.rdoc')
+  rdoc.rdoc_files.include('lib/**/*.rb')
+end
+
+
+
+
+Bundler::GemHelper.install_tasks
+
+require 'rake/testtask'
+
+Rake::TestTask.new(:test) do |t|
+  t.libs << 'lib'
+  t.libs << 'test'
+  t.pattern = 'test/**/*_test.rb'
+  t.verbose = false
+end
+
+
+task default: :test

Diff for: lib/active_record/singleton.rb

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+module ActiveRecord
+  module Singleton
+    extend ActiveSupport::Concern
+
+    module ClassMethods
+
+      def instance
+        first || new
+      end
+
+    end
+
+    private
+
+    def create_or_update
+      run_callbacks(:save) do
+        raise ReadOnlyRecord if readonly?
+
+        # Singleton record
+        singleton = self.class.first
+
+        # Force overriding the one-and-only singleton record (if any)
+        self.id = singleton.id if singleton
+
+        # Update if a singleton record is found, otherwise insert one
+        result = singleton ? update_record : create_record
+        result != false
+      end
+    end
+
+  end
+end

Diff for: lib/rails_admin/config/actions/singleton_aware_delete.rb

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+module RailsAdmin::Config::Actions::SingletonAwareDelete
+
+  PATCH = Proc.new do
+
+    # Hide this delete action when dealing with a singleton model
+    visible do
+      bindings[:abstract_model].model.included_modules.exclude? ActiveRecord::Singleton
+    end
+
+  end
+
+end

Diff for: lib/rails_admin/config/actions/singleton_aware_index.rb

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+module RailsAdmin::Config::Actions::SingletonAwareIndex
+
+  PATCH = Proc.new do
+
+    # Hide this index action when dealing with a singleton model
+    visible do
+      bindings[:abstract_model].model.included_modules.exclude? ActiveRecord::Singleton
+    end
+
+    # Store reference to the original controller procedure
+    original_controller = controller
+
+    register_instance_option :controller do
+      abstract_model = bindings[:abstract_model]
+      model = abstract_model.model
+
+      # Determine whether this is a singleton model
+      if model.included_modules.include? ActiveRecord::Singleton
+        Proc.new do
+
+          # Redirect to new/show view depending on whether a record already exists
+          if singleton = model.first
+            redirect_to show_path abstract_model.to_param, singleton.id
+          else
+            redirect_to new_path abstract_model.to_param
+          end
+        end
+      else
+        original_controller
+      end
+    end
+
+  end
+
+end

Diff for: lib/singleton-rails.rb

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+module SingletonRails
+end

Diff for: lib/tasks/singleton_rails_tasks.rake

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+# desc "Explaining what the task does"
+# task :singleton_rails do
+#   # Task goes here
+# end

Diff for: singleton_rails.gemspec

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+$:.push File.expand_path("../lib", __FILE__)
+
+# Describe your gem and declare its dependencies:
+Gem::Specification.new do |s|
+  s.name        = "singleton-rails"
+  s.version     = "0.0.1"
+  s.authors     = ["Tim Kurvers", "Christoffer Winterkvist"]
+  s.email       = ["[email protected]", "[email protected]"]
+  s.homepage    = "http://hyper.no"
+  s.summary     = "Forever Alone Ruby Gem"
+  s.description = "Adds singleton functionallity to ActiveRecord models"
+  s.license     = "MIT"
+
+  s.files = Dir["{app,config,db,lib}/**/*", "MIT-LICENSE", "Rakefile", "README.rdoc"]
+  s.test_files = Dir["test/**/*"]
+
+  s.add_dependency "rails", "~> 4.1.0.beta1"
+
+  s.add_development_dependency "sqlite3"
+end

Diff for: test/dummy/README.rdoc

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+== README
+
+This README would normally document whatever steps are necessary to get the
+application up and running.
+
+Things you may want to cover:
+
+* Ruby version
+
+* System dependencies
+
+* Configuration
+
+* Database creation
+
+* Database initialization
+
+* How to run the test suite
+
+* Services (job queues, cache servers, search engines, etc.)
+
+* Deployment instructions
+
+* ...
+
+
+Please feel free to use a different markup language if you do not plan to run
+<tt>rake doc:app</tt>.

Diff for: test/dummy/Rakefile

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+# Add your own tasks in files placed in lib/tasks ending in .rake,
+# for example lib/tasks/capistrano.rake, and they will automatically be available to Rake.
+
+require File.expand_path('../config/application', __FILE__)
+
+Rails.application.load_tasks

Diff for: test/dummy/app/assets/images/.keep

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+// This is a manifest file that'll be compiled into application.js, which will include all the files
+// listed below.
+//
+// Any JavaScript/Coffee file within this directory, lib/assets/javascripts, vendor/assets/javascripts,
+// or vendor/assets/javascripts of plugins, if any, can be referenced here using a relative path.
+//
+// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
+// compiled file.
+//
+// Read Sprockets README (https://github.com/sstephenson/sprockets#sprockets-directives) for details
+// about supported directives.
+//
+//= require_tree .

Diff for: test/dummy/app/assets/javascripts/application.js

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+/*
+ * This is a manifest file that'll be compiled into application.css, which will include all the files
+ * listed below.
+ *
+ * Any CSS and SCSS file within this directory, lib/assets/stylesheets, vendor/assets/stylesheets,
+ * or vendor/assets/stylesheets of plugins, if any, can be referenced here using a relative path.
+ *
+ * You're free to add application-wide styles to this file and they'll appear at the bottom of the
+ * compiled file so the styles you add here take precedence over styles defined in any styles
+ * defined in the other CSS/SCSS files in this directory. It is generally better to create a new
+ * file per style scope.
+ *
+ *= require_tree .
+ *= require_self
+ */

Diff for: test/dummy/app/assets/stylesheets/application.css

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+class ApplicationController < ActionController::Base
+  # Prevent CSRF attacks by raising an exception.
+  # For APIs, you may want to use :null_session instead.
+  protect_from_forgery with: :exception
+end

Diff for: test/dummy/app/controllers/application_controller.rb

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+module ApplicationHelper
+end

Diff for: test/dummy/app/controllers/concerns/.keep

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+<!DOCTYPE html>
+<html>
+<head>
+  <title>Dummy</title>
+  <%= stylesheet_link_tag    "application", media: "all", "data-turbolinks-track" => true %>
+  <%= javascript_include_tag "application", "data-turbolinks-track" => true %>
+  <%= csrf_meta_tags %>
+</head>
+<body>
+
+<%= yield %>
+
+</body>
+</html>

Diff for: test/dummy/app/helpers/application_helper.rb

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+#!/usr/bin/env ruby
+ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../Gemfile', __FILE__)
+load Gem.bin_path('bundler', 'bundle')

Diff for: test/dummy/app/mailers/.keep

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+#!/usr/bin/env ruby
+APP_PATH = File.expand_path('../../config/application',  __FILE__)
+require_relative '../config/boot'
+require 'rails/commands'

Diff for: test/dummy/app/models/.keep

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+#!/usr/bin/env ruby
+require_relative '../config/boot'
+require 'rake'
+Rake.application.run

Diff for: test/dummy/app/models/concerns/.keep

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+# This file is used by Rack-based servers to start the application.
+
+require ::File.expand_path('../config/environment',  __FILE__)
+run Rails.application