Add Rails master appraisals in preparation for Rails 5

- Also bump Travis Ruby 2.2.x version to 2.2.4

.travis.yml

 rvm:
   - 2.1
-  - 2.2
+  - 2.2.2
 
 script: "bundle exec rake clean spec cucumber"
 
 gemfile:
-  - gemfiles/4.2.awsv2.1.gemfile
   - gemfiles/4.2.awsv2.0.gemfile
+  - gemfiles/4.2.awsv2.1.gemfile
+  - gemfiles/5.0.awsv2.0.gemfile
+  - gemfiles/5.0.awsv2.1.gemfile
+
+matrix:
+  fast_finish: true
+  exclude:
+    - gemfile: gemfiles/5.0.awsv2.0.gemfile
+      rvm: 2.0
+    - gemfile: gemfiles/5.0.awsv2.1.gemfile
+      rvm: 2.0
+    - gemfile: gemfiles/5.0.awsv2.0.gemfile
+      rvm: 2.1
+    - gemfile: gemfiles/5.0.awsv2.1.gemfile
+      rvm: 2.1
 
 sudo: false
 cache: bundler

Appraisals

+appraise "4.2.awsv2.0" do
+  gem "rails", "~> 4.2.0"
+  gem "aws-sdk", "~> 2.0.0"
+end
+
 appraise "4.2.awsv2.1" do
   gem "rails", "~> 4.2.0"
   gem "aws-sdk", "~> 2.1.0"
@@ -7,11 +12,16 @@ appraise "4.2.awsv2.1" do
   end
 end
 
-appraise "4.2.awsv2.0" do
-  gem "rails", "~> 4.2.0"
+appraise "5.0.awsv2.0" do
+  gem "rails", "5.0.0.beta3"
   gem "aws-sdk", "~> 2.0.0"
 
   group :development, :test do
     gem 'mime-types', '>= 1.16', '< 4'
   end
 end
+
+appraise "5.0.awsv2.1" do
+  gem "rails", "5.0.0.beta3"
+  gem "aws-sdk", "~> 2.1.0"
+end

README.md

 Paperclip
 =========
 
+## Documentation valid for `master` branch
+
+Please check the documentation for the paperclip version you are using:
+https://github.com/thoughtbot/paperclip/releases
+
+---
+
 [![Build Status](https://secure.travis-ci.org/thoughtbot/paperclip.svg?branch=master)](http://travis-ci.org/thoughtbot/paperclip)
 [![Dependency Status](https://gemnasium.com/thoughtbot/paperclip.svg?travis)](https://gemnasium.com/thoughtbot/paperclip)
 [![Code Climate](https://codeclimate.com/github/thoughtbot/paperclip.svg)](https://codeclimate.com/github/thoughtbot/paperclip)
@@ -71,9 +78,8 @@ Requirements
 
 ### Ruby and Rails
 
-Paperclip now requires Ruby version **>= 2.0.0** and Rails version **3.2, >= 4.1** (Only if you're going to use Paperclip with Ruby on Rails.)
-
-If you're still on Ruby 1.8.7 or Ruby on Rails 2.3.x, you can still use Paperclip 2.7.x with your project. Also, everything in this README might not apply to your version of Paperclip, and you should read [the README for version 2.7](http://www.rubydoc.info/gems/paperclip/2.7.0) instead.
+Paperclip now requires Ruby version **>= 2.1** and Rails version **>= 4.2**
+(only if you're going to use Paperclip with Ruby on Rails.)
 
 ### Image Processor
 
@@ -100,7 +106,7 @@ to install GhostScript. On Mac OS X, you can also install that using Homebrew:
 
     brew install gs
 
-If you're on Ubuntu (or any Debian base Linux distribution), you'll want to run
+If you are on Ubuntu (or any Debian base Linux distribution), you'll want to run
 the following with apt-get:
 
     sudo apt-get install imagemagick -y
@@ -153,7 +159,7 @@ Paperclip is distributed as a gem, which is how it should be used in your app.
 Include the gem in your Gemfile:
 
 ```ruby
-gem "paperclip", "~> 4.3"
+gem "paperclip", "~> 5.0"
 ```
 
 Or, if you want to get the latest, you can get master from the main paperclip repository:

gemfiles/4.2.awsv2.0.gemfile

@@ -2,16 +2,16 @@
 
 source "https://rubygems.org"
 
-gem "sqlite3", "~> 1.3.8", platforms: :ruby
+gem "sqlite3", "~> 1.3.8", :platforms => :ruby
 gem "pry"
 gem "rails", "~> 4.2.0"
 gem "aws-sdk", "~> 2.0.0"
 
 group :development, :test do
   gem "activerecord-import"
-  gem "mime-types", ">= 1.16", "< 4"
+  gem "mime-types"
   gem "builder"
   gem "rubocop", :require => false
 end
 
-gemspec path: "../"
+gemspec :path => "../"

gemfiles/4.2.awsv2.1.gemfile

@@ -2,7 +2,7 @@
 
 source "https://rubygems.org"
 
-gem "sqlite3", "~> 1.3.8", platforms: :ruby
+gem "sqlite3", "~> 1.3.8", :platforms => :ruby
 gem "pry"
 gem "rails", "~> 4.2.0"
 gem "aws-sdk", "~> 2.1.0"
@@ -14,4 +14,4 @@ group :development, :test do
   gem "rubocop", :require => false
 end
 
-gemspec path: "../"
+gemspec :path => "../"

gemfiles/4.2.awsv2.gemfile

+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "sqlite3", "~> 1.3.8", :platforms => :ruby
+gem "jruby-openssl", :platforms => :jruby
+gem "activerecord-jdbcsqlite3-adapter", :platforms => :jruby
+gem "rubysl", :platforms => :rbx
+gem "racc", :platforms => :rbx
+gem "pry"
+gem "rails", "~> 4.2.0"
+gem "aws-sdk", "~> 2.0"
+
+group :development, :test do
+  gem "mime-types", "~> 1.16"
+  gem "builder"
+  gem "rubocop", :require => false
+end
+
+gemspec :path => "../"

gemfiles/5.0.awsv2.0.gemfile

+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "sqlite3", "~> 1.3.8", :platforms => :ruby
+gem "pry"
+gem "rails", "5.0.0.beta3"
+gem "aws-sdk", "~> 2.0.0"
+
+group :development, :test do
+  gem "activerecord-import"
+  gem "mime-types", ">= 1.16", "< 4"
+  gem "builder"
+  gem "rubocop", :require => false
+end
+
+gemspec :path => "../"

gemfiles/5.0.awsv2.1.gemfile

+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "sqlite3", "~> 1.3.8", :platforms => :ruby
+gem "pry"
+gem "rails", "5.0.0.beta3"
+gem "aws-sdk", "~> 2.1.0"
+
+group :development, :test do
+  gem "activerecord-import"
+  gem "mime-types"
+  gem "builder"
+  gem "rubocop", :require => false
+end
+
+gemspec :path => "../"

gemfiles/5.0.awsv2.gemfile

+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "sqlite3", "~> 1.3.8", :platforms => :ruby
+gem "jruby-openssl", :platforms => :jruby
+gem "activerecord-jdbcsqlite3-adapter", :platforms => :jruby
+gem "rubysl", :platforms => :rbx
+gem "racc", :platforms => :rbx
+gem "pry"
+gem "rails", :github => "rails/rails"
+gem "sprockets-rails", :github => "rails/sprockets-rails"
+gem "sprockets", :github => "rails/sprockets"
+gem "sass-rails", :github => "rails/sass-rails"
+gem "arel", :github => "rails/arel"
+gem "rack", :github => "rack/rack"
+gem "aws-sdk", "~> 2.0"
+
+group :development, :test do
+  gem "mime-types", "~> 1.16"
+  gem "builder"
+  gem "rubocop", :require => false
+end
+
+gemspec :path => "../"

lib/paperclip/callbacks.rb

@@ -7,7 +7,7 @@ module Paperclip
 
     module Defining
       def define_paperclip_callbacks(*callbacks)
-        define_callbacks(*[callbacks, {:terminator => callback_terminator}].flatten)
+        define_callbacks(*[callbacks, { terminator: hasta_la_vista_baby }].flatten)
         callbacks.each do |callback|
           eval <<-end_callbacks
             def before_#{callback}(*args, &blk)
@@ -22,9 +22,9 @@ module Paperclip
 
       private
 
-      def callback_terminator
-        if ::ActiveSupport::VERSION::STRING >= '4.1'
-          lambda { |target, result| result == false }
+      def hasta_la_vista_baby
+        if ::ActiveSupport::VERSION::STRING >= "5.0"
+          lambda { |_, result| result.call }
         else
           'result == false'
         end

spec/support/model_reconstruction.rb

@@ -10,7 +10,15 @@ module ModelReconstruction
 
     klass.reset_column_information
     klass.connection_pool.clear_table_cache!(klass.table_name) if klass.connection_pool.respond_to?(:clear_table_cache!)
-    klass.connection.schema_cache.clear_table_cache!(klass.table_name) if klass.connection.respond_to?(:schema_cache)
+
+    if klass.connection.respond_to?(:schema_cache)
+      if `bundle exec rails -v`.include?("4.2")
+        klass.connection.schema_cache.clear_table_cache!(klass.table_name)
+      elsif `bundle exec rails -v`.include?("5.0")
+        klass.connection.schema_cache.clear_data_source_cache!(klass.table_name)
+      end
+    end
+
     klass
   end