0001-Add-compatibility-for-both-sprockets-2-and-3.patch

From 6f64ec659606342193256e3b43c1f25687ff0f54 Mon Sep 17 00:00:00 2001
From: Rafael Reggiani Manzo <rr.manzo@gmail.com>
Date: Sun, 7 Feb 2016 09:33:44 -0200
Subject: [PATCH] Add compatibility for both sprockets 2 and 3

Compatibility with Rails 4.1 (and so sprockets 2) is still a
requirement. So sprockets 3 specific code have been conditionalized
keeping both versions compatible and thus allowing Rails 5 usage.
---
 Gemfile               |  2 +-
 konacha.gemspec       |  2 +-
 lib/konacha/engine.rb | 22 ++++++++++++++--------
 3 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/Gemfile b/Gemfile
index 7965f2d..f58a935 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,4 +2,4 @@ source 'https://rubygems.org'
 gemspec
 
 gem "railties", "~> 4.2.0"
-gem "sprockets-rails", ">= 3.0"
+gem "sprockets-rails"
diff --git a/konacha.gemspec b/konacha.gemspec
index 5858084..a84eb86 100644
--- a/konacha.gemspec
+++ b/konacha.gemspec
@@ -22,7 +22,7 @@ the asset pipeline and engines.}
 
   gem.add_dependency "railties", ">= 3.1", "< 5"
   gem.add_dependency "actionpack", ">= 3.1", "< 5"
-  gem.add_dependency "sprockets", ">= 3", "< 4"
+  gem.add_dependency "sprockets", ">= 2", "< 4"
   gem.add_dependency "capybara"
   gem.add_dependency "colorize"
   gem.add_dependency "tilt"
diff --git a/lib/konacha/engine.rb b/lib/konacha/engine.rb
index 5c6f977..b28a238 100644
--- a/lib/konacha/engine.rb
+++ b/lib/konacha/engine.rb
@@ -7,14 +7,17 @@ module Konacha
     config.konacha = ActiveSupport::OrderedOptions.new
 
     def self.application(app)
-      app.config.cache_classes = false
-      sprockes_env = Sprockets::Railtie.build_environment(app)
+      # Compatibility workaround for supporting both sprockets 2 and 3
+      if Sprockets::VERSION.start_with? '3'
+        app.config.cache_classes = false
+        sprockes_env = Sprockets::Railtie.build_environment(app)
+      end
 
       Rack::Builder.app do
         use Rack::ShowExceptions
 
         map app.config.assets.prefix do
-          run sprockes_env
+          run Sprockets::VERSION.start_with?('3') ? sprockes_env : app.assets # Compatibility workaround for supporting both sprockets 2 and 3
         end
 
         map "/" do
@@ -52,11 +55,14 @@ module Konacha
       options.application  ||= self.class.application(app)
     end
 
-    config.after_initialize do
-      ActiveSupport.on_load(:action_view) do
-        default_checker = ActionView::Base.precompiled_asset_checker
-        ActionView::Base.precompiled_asset_checker = -> logical_path do
-          default_checker[logical_path] || Konacha.asset_precompiled?(logical_path)
+    # Compatibility workaround for supporting both sprockets 2 and 3
+    if Sprockets::VERSION.start_with? '3'
+      config.after_initialize do
+        ActiveSupport.on_load(:action_view) do
+          default_checker = ActionView::Base.precompiled_asset_checker
+          ActionView::Base.precompiled_asset_checker = -> logical_path do
+            default_checker[logical_path] || Konacha.asset_precompiled?(logical_path)
+          end
         end
       end
     end
-- 
2.7.0