Drop support for Ruby < 2.2, Rubinius and Rails 4.x

.travis.yml

@@ -23,12 +23,9 @@ env:
     - JRUBY_OPTS="$JRUBY_OPTS --debug"
 
 rvm:
-  - 2.3.8
+  - 2.6.3
 
 gemfile:
-  - gemfiles/rails_4.0.gemfile
-  - gemfiles/rails_4.1.gemfile
-  - gemfiles/rails_4.2.gemfile
   - gemfiles/rails_5.0.gemfile
   - gemfiles/rails_5.1.gemfile
   - gemfiles/rails_5.2.gemfile
@@ -38,16 +35,8 @@ services:
 
 dist: trusty
 
-sudo: false
-
 matrix:
   include:
-    - rvm: 2.1.10
-      env: CI_ORM=mongoid
-      gemfile: gemfiles/rails_4.2.gemfile
-    - rvm: 2.1.10
-      env: CI_ORM=active_record CI_DB_ADAPTER=sqlite3
-      gemfile: gemfiles/rails_4.2.gemfile
     - rvm: 2.2.10
       env: CI_ORM=mongoid
       gemfile: gemfiles/rails_5.2.gemfile
@@ -75,10 +64,10 @@ matrix:
     - rvm: 2.5.3
       env: CI_ORM=active_record CI_DB_ADAPTER=sqlite3
       gemfile: gemfiles/rails_5.2.gemfile
-    - rvm: 2.6.1
+    - rvm: 2.6.3
       env: CI_ORM=mongoid
       gemfile: gemfiles/rails_5.2.gemfile
-    - rvm: 2.6.1
+    - rvm: 2.6.3
       env: CI_ORM=active_record CI_DB_ADAPTER=sqlite3
       gemfile: gemfiles/rails_5.2.gemfile
     - rvm: ruby-head
@@ -87,21 +76,17 @@ matrix:
     - rvm: ruby-head
       env: CI_ORM=active_record CI_DB_ADAPTER=sqlite3
       gemfile: gemfiles/rails_5.2.gemfile
-    - rvm: rbx-2.2.7
-      env: CI_ORM=active_record CI_DB_ADAPTER=sqlite3
-      gemfile: gemfiles/rails_4.2.gemfile
-    - rvm: jruby-9.2.5.0
+    - rvm: jruby-9.2.6.0
       env: CI_ORM=mongoid
       gemfile: gemfiles/rails_5.2.gemfile
-    - rvm: jruby-9.2.5.0
+    - rvm: jruby-9.2.6.0
       env: CI_ORM=active_record CI_DB_ADAPTER=sqlite3
       gemfile: gemfiles/rails_5.2.gemfile
     - rvm: jruby-head
       env: CI_ORM=active_record CI_DB_ADAPTER=sqlite3
       gemfile: gemfiles/rails_5.2.gemfile
   allow_failures:
     - rvm: ruby-head
-    - rvm: rbx-2.2.7
     - rvm: jruby-head
   fast_finish: true
 

Appraisals

@@ -1,106 +1,3 @@
-appraise "rails-4.0" do
-  gem 'rails', '~> 4.0.0'
-  gem 'sass-rails', '~> 4.0.3'
-  gem 'devise', '>= 3.2'
-  gem 'test-unit'
-  gem 'capybara', '>= 0.8', group: :test
-  gem 'kaminari', '~> 0.14'
-
-  group :test do
-    gem 'cancancan', '~> 1.12'
-  end
-
-  group :active_record do
-    gem 'paper_trail', '~> 5.0'
-
-    platforms :jruby do
-      gem 'activerecord-jdbcmysql-adapter', '~> 1.2'
-      gem 'activerecord-jdbcpostgresql-adapter', '~> 1.2'
-      gem 'activerecord-jdbcsqlite3-adapter', '~> 1.3.0.beta1'
-    end
-  end
-
-  group :mongoid do
-    gem 'mongoid', '~> 5.0'
-    gem 'kaminari-mongoid', '~> 0.1'
-    gem 'mongoid-paperclip', '>= 0.0.8', require: 'mongoid_paperclip'
-    gem 'carrierwave-mongoid', '>= 0.6.3', require: 'carrierwave/mongoid'
-    gem 'refile-mongoid', github: 'DimaSamodurov/refile-mongoid', platforms: :ruby
-  end
-
-  platforms :ruby do
-    gem 'refile', '~> 0.5', require: 'refile/rails'
-    gem 'refile-mini_magick', '>= 0.1.0'
-  end
-end
-
-appraise "rails-4.1" do
-  gem 'rails', '~> 4.1.0'
-  gem 'devise', '>= 3.2'
-  gem 'capybara', '>= 0.8', group: :test
-
-  group :test do
-    gem 'cancancan', '~> 1.12'
-  end
-
-  group :active_record do
-    gem 'paper_trail', '>= 5.0'
-
-    platforms :jruby do
-      gem 'activerecord-jdbcmysql-adapter', '~> 1.2'
-      gem 'activerecord-jdbcpostgresql-adapter', '~> 1.2'
-      gem 'activerecord-jdbcsqlite3-adapter', '~> 1.3.0.beta1'
-    end
-  end
-
-  group :mongoid do
-    gem 'mongoid', '~> 5.0'
-    gem 'kaminari-mongoid'
-    gem 'mongoid-paperclip', '>= 0.0.8', require: 'mongoid_paperclip'
-    gem 'carrierwave-mongoid', '>= 0.6.3', require: 'carrierwave/mongoid'
-    gem 'refile-mongoid', github: 'DimaSamodurov/refile-mongoid', platforms: :ruby
-  end
-
-  platforms :ruby do
-    gem 'refile', '~> 0.5', require: 'refile/rails'
-    gem 'refile-mini_magick', '>= 0.1.0'
-  end
-end
-
-appraise "rails-4.2" do
-  gem 'rails', '~> 4.2.0'
-  gem 'sass-rails', '~> 5.0'
-  gem 'devise', '>= 3.4'
-  gem 'capybara', '>= 0.8', group: :test
-
-  group :test do
-    gem 'cancancan', '~> 1.12'
-  end
-
-  group :active_record do
-    gem 'paper_trail', '>= 5.0'
-
-    platforms :jruby do
-      gem 'activerecord-jdbcmysql-adapter', '~> 1.2'
-      gem 'activerecord-jdbcpostgresql-adapter', '~> 1.2'
-      gem 'activerecord-jdbcsqlite3-adapter', '~> 1.3.0.beta1'
-    end
-  end
-
-  group :mongoid do
-    gem 'mongoid', '~> 5.0'
-    gem 'kaminari-mongoid'
-    gem 'mongoid-paperclip', '>= 0.0.8', require: 'mongoid_paperclip'
-    gem 'carrierwave-mongoid', '>= 0.6.3', require: 'carrierwave/mongoid'
-    gem 'refile-mongoid', github: 'DimaSamodurov/refile-mongoid', platforms: :ruby
-  end
-
-  platforms :ruby do
-    gem 'refile', '~> 0.5', require: 'refile/rails'
-    gem 'refile-mini_magick', '>= 0.1.0'
-  end
-end
-
 appraise "rails-5.0" do
   gem 'rails', '~> 5.0.0'
   gem 'sass-rails', '~> 5.0'

Gemfile

@@ -32,6 +32,7 @@ group :test do
   gem 'pundit'
   gem 'rack-cache', require: 'rack/cache'
   gem 'rspec-rails', '>= 2.14'
+  gem 'rspec-expectations', '!= 3.8.3'
   gem 'rubocop', '~> 0.41.2'
   gem 'simplecov', '>= 0.9', require: false
   gem 'timecop', '>= 0.5'

README.md

@@ -96,13 +96,11 @@ If you think you found a bug in RailsAdmin, you can [submit an issue](https://gi
 ## Supported Ruby Versions
 This library aims to support and is [tested against][travis] the following Ruby implementations:
 
-* Ruby 2.1
 * Ruby 2.2
 * Ruby 2.3
 * Ruby 2.4
 * Ruby 2.5
-* [Rubinius][]
+* Ruby 2.6
 * [JRuby][]
 
-[rubinius]: http://rubinius.com
 [jruby]: http://jruby.org/

gemfiles/cancan.gemfile

@@ -35,6 +35,7 @@ group :test do
   gem "pundit"
   gem "rack-cache", require: "rack/cache"
   gem "rspec-rails", ">= 2.14"
+  gem "rspec-expectations", "!= 3.8.3"
   gem "rubocop", "~> 0.41.2"
   gem "simplecov", ">= 0.9", require: false
   gem "timecop", ">= 0.5"