Remove Rails 2 support from Paperclip

.travis.yml

@@ -8,7 +8,6 @@ before_script: "sudo ntpdate -ub ntp.ubuntu.com pool.ntp.org; true"
 script: "bundle exec rake clean test cucumber"
 
 gemfile:
-  - gemfiles/rails2.gemfile
-  - gemfiles/rails3.gemfile
-  - gemfiles/rails3_1.gemfile
-  - gemfiles/rails3_2.gemfile
+  - gemfiles/3.0.gemfile
+  - gemfiles/3.1.gemfile
+  - gemfiles/3.2.gemfile

Appraisals

@@ -1,20 +1,14 @@
-appraise "rails2" do
-  gem "rails", "~> 2.3.14"
+appraise "3.0" do
+  gem "rails", "~> 3.0.12"
   gem "paperclip", :path => "../"
 end
 
-appraise "rails3" do
-  gem "rails", "~> 3.0.10"
+appraise "3.1" do
+  gem "rails", "~> 3.1.4"
   gem "paperclip", :path => "../"
 end
 
-appraise "rails3_1" do
-  gem "rails", "~> 3.1.0"
+appraise "3.2" do
+  gem "rails", "~> 3.2.2"
   gem "paperclip", :path => "../"
 end
-
-appraise "rails3_2" do
-  gem "rails", "~> 3.2.0"
-  gem "paperclip", :path => "../"
-end
-

features/rake_tasks.feature

@@ -5,7 +5,6 @@ Feature: Rake tasks
     And I run a rails generator to generate a "User" scaffold with "name:string"
     And I run a paperclip generator to add a paperclip "attachment" to the "User" model
     And I run a migration
-    And I add the paperclip rake task to a Rails 2.3 application
     And I add this snippet to the User model:
       """
       has_attached_file :attachment, :path => ":rails_root/public/system/:attachment/:style/:filename"

features/step_definitions/rails_steps.rb

@@ -31,33 +31,18 @@
 end
 
 Given /^I update my new user view to include the file upload field$/ do
-  if framework_version?("3")
-    steps %{
-      Given I overwrite "app/views/users/new.html.erb" with:
-        """
-        <%= form_for @user, :html => { :multipart => true } do |f| %>
-          <%= f.label :name %>
-          <%= f.text_field :name %>
-          <%= f.label :attachment %>
-          <%= f.file_field :attachment %>
-          <%= submit_tag "Submit" %>
-        <% end %>
-        """
-    }
-  else
-    steps %{
-      Given I overwrite "app/views/users/new.html.erb" with:
-        """
-        <% form_for @user, :html => { :multipart => true } do |f| %>
-          <%= f.label :name %>
-          <%= f.text_field :name %>
-          <%= f.label :attachment %>
-          <%= f.file_field :attachment %>
-          <%= submit_tag "Submit" %>
-        <% end %>
-        """
-    }
-  end
+  steps %{
+    Given I overwrite "app/views/users/new.html.erb" with:
+      """
+      <%= form_for @user, :html => { :multipart => true } do |f| %>
+        <%= f.label :name %>
+        <%= f.text_field :name %>
+        <%= f.label :attachment %>
+        <%= f.file_field :attachment %>
+        <%= submit_tag "Submit" %>
+      <% end %>
+      """
+  }
 end
 
 Given /^I update my user view to include the attachment$/ do
@@ -89,7 +74,7 @@
   Rails::Application.reload!
 end
 
-When %r{I turn off class caching} do
+When /^I turn off class caching$/ do
   in_current_dir do
     file = "config/environments/test.rb"
     config = IO.read(file)
@@ -99,30 +84,6 @@
   end
 end
 
-Given /^I update my application to use Bundler$/ do
-  if framework_version?("2")
-    boot_config_template = File.read('features/support/fixtures/boot_config.txt')
-    preinitializer_template = File.read('features/support/fixtures/preinitializer.txt')
-    gemfile_template = File.read('features/support/fixtures/gemfile.txt')
-    in_current_dir do
-      content = File.read("config/boot.rb").sub(/Rails\.boot!/, boot_config_template)
-      File.open("config/boot.rb", "w") { |file| file.write(content) }
-      File.open("config/preinitializer.rb", "w") { |file| file.write(preinitializer_template) }
-      File.open("Gemfile", "w") { |file| file.write(gemfile_template.sub(/RAILS_VERSION/, framework_version)) }
-    end
-  end
-end
-
-Given /^I add the paperclip rake task to a Rails 2.3 application$/ do
-  if framework_version?("2.3")
-    require 'fileutils'
-    source = File.expand_path('lib/tasks/paperclip.rake')
-    destination = in_current_dir { File.expand_path("lib/tasks") }
-    FileUtils.cp source, destination
-    append_to "Rakefile", "require 'paperclip'"
-  end
-end
-
 Then /^the file at "([^"]*)" should be the same as "([^"]*)"$/ do |web_file, path|
   expected = IO.read(path)
   actual = if web_file.match %r{^https?://}
@@ -155,28 +116,3 @@
 When /^I comment out the gem "([^"]*)" from the Gemfile$/ do |gemname|
   comment_out_gem_in_gemfile gemname
 end
-
-module FileHelpers
-  def append_to(path, contents)
-    in_current_dir do
-      File.open(path, "a") do |file|
-        file.puts
-        file.puts contents
-      end
-    end
-  end
-
-  def append_to_gemfile(contents)
-    append_to('Gemfile', contents)
-  end
-
-  def comment_out_gem_in_gemfile(gemname)
-    in_current_dir do
-      gemfile = File.read("Gemfile")
-      gemfile.sub!(/^(\s*)(gem\s*['"]#{gemname})/, "\\1# \\2")
-      File.open("Gemfile", 'w'){ |file| file.write(gemfile) }
-    end
-  end
-end
-
-World(FileHelpers)

features/support/file_helpers.rb

@@ -0,0 +1,24 @@
+module FileHelpers
+  def append_to(path, contents)
+    in_current_dir do
+      File.open(path, "a") do |file|
+        file.puts
+        file.puts contents
+      end
+    end
+  end
+
+  def append_to_gemfile(contents)
+    append_to('Gemfile', contents)
+  end
+
+  def comment_out_gem_in_gemfile(gemname)
+    in_current_dir do
+      gemfile = File.read("Gemfile")
+      gemfile.sub!(/^(\s*)(gem\s*['"]#{gemname})/, "\\1# \\2")
+      File.open("Gemfile", 'w'){ |file| file.write(gemfile) }
+    end
+  end
+end
+
+World(FileHelpers)

features/support/rails.rb

@@ -32,15 +32,15 @@ def framework_version
   end
 
   def new_application_command
-    framework_version?("3") ? "rails new" : "rails"
+    "rails new"
   end
 
   def generator_command
-    framework_version?("3") ? "script/rails generate" : "script/generate"
+    "script/rails generate"
   end
 
   def runner_command
-    framework_version?("3") ? "script/rails runner" : "script/runner"
+    "script/rails runner"
   end
 end
 World(RailsCommandHelpers)

gemfiles/rails2.gemfile → gemfiles/3.0.gemfile

@@ -3,7 +3,7 @@
 source "http://rubygems.org"
 
 gem "jruby-openssl", :platform=>:jruby
-gem "rails", "~> 2.3.14"
+gem "rails", "~> 3.0.12"
 gem "paperclip", :path=>"../"
 
 gemspec :path=>"../"

gemfiles/rails3_1.gemfile → gemfiles/3.1.gemfile

@@ -3,7 +3,7 @@
 source "http://rubygems.org"
 
 gem "jruby-openssl", :platform=>:jruby
-gem "rails", "~> 3.1.0"
+gem "rails", "~> 3.1.4"
 gem "paperclip", :path=>"../"
 
 gemspec :path=>"../"

gemfiles/rails3_2.gemfile → gemfiles/3.2.gemfile

@@ -3,7 +3,7 @@
 source "http://rubygems.org"
 
 gem "jruby-openssl", :platform=>:jruby
-gem "rails", "~> 3.2.0"
+gem "rails", "~> 3.2.2"
 gem "paperclip", :path=>"../"
 
 gemspec :path=>"../"

lib/paperclip.rb

@@ -39,7 +39,8 @@
 require 'paperclip/attachment'
 require 'paperclip/attachment_options'
 require 'paperclip/storage'
-require 'paperclip/callback_compatibility'
+require 'paperclip/callbacks'
+require 'paperclip/glue'
 require 'paperclip/missing_attachment_styles'
 require 'paperclip/railtie'
 require 'logger'
@@ -175,16 +176,6 @@ def class_for(class_name)
           klass.const_defined?(partial_class_name) ? klass.const_get(partial_class_name, false) : klass.const_missing(partial_class_name)
         end
       end
-    rescue ArgumentError => e
-      # Sadly, we need to capture ArgumentError here because Rails 2.3.x
-      # ActiveSupport dependency management will try to the constant inherited
-      # from Object, and fail miserably with "Object is not missing constant X" error
-      # https://github.com/rails/rails/blob/v2.3.12/activesupport/lib/active_support/dependencies.rb#L124
-      if e.message =~ /is not missing constant/
-        raise NameError, "uninitialized constant #{class_name}"
-      else
-        raise e
-      end
     end
 
     def check_for_url_clash(name,url,klass)
@@ -216,18 +207,6 @@ class NotIdentifiedByImageMagickError < PaperclipError #:nodoc:
   class InfiniteInterpolationError < PaperclipError #:nodoc:
   end
 
-  module Glue
-    def self.included base #:nodoc:
-      base.extend ClassMethods
-      base.class_attribute :attachment_definitions if base.respond_to?(:class_attribute)
-      if base.respond_to?(:set_callback)
-        base.send :include, Paperclip::CallbackCompatability::Rails3
-      else
-        base.send :include, Paperclip::CallbackCompatability::Rails21
-      end
-    end
-  end
-
   module ClassMethods
     # +has_attached_file+ gives the class it is called on an attribute that maps to a file. This
     # is typically a file stored somewhere on the filesystem and has been uploaded by a user.
@@ -312,17 +291,9 @@ def has_attached_file name, options = {}
       include InstanceMethods
 
       if attachment_definitions.nil?
-        if respond_to?(:class_attribute)
-          self.attachment_definitions = {}
-        else
-          write_inheritable_attribute(:attachment_definitions, {})
-        end
+        self.attachment_definitions = {}
       else
-        if respond_to?(:class_attribute)
-          self.attachment_definitions = self.attachment_definitions.dup
-        else
-          write_inheritable_attribute(:attachment_definitions, self.attachment_definitions.dup)
-        end
+        self.attachment_definitions = self.attachment_definitions.dup
       end
 
       attachment_definitions[name] = Paperclip::AttachmentOptions.new(options)
@@ -433,11 +404,7 @@ def validates_attachment_content_type name, options = {}
     # Returns the attachment definitions defined by each call to
     # has_attached_file.
     def attachment_definitions
-      if respond_to?(:class_attribute)
-        self.attachment_definitions
-      else
-        read_inheritable_attribute(:attachment_definitions)
-      end
+      self.attachment_definitions
     end
   end