Merge a4732c3 into 98213b7

.github/workflows/test.yml

@@ -14,11 +14,6 @@ jobs:
         adapter: [sqlite3]
         asset: [webpack]
         include:
-          - ruby: 2.6
-            gemfile: gemfiles/rails_6.0.gemfile
-            orm: active_record
-            adapter: sqlite3
-            asset: sprockets
           - ruby: 2.7
             gemfile: gemfiles/rails_6.1.gemfile
             orm: active_record
@@ -54,16 +49,6 @@ jobs:
             orm: mongoid
             adapter: sqlite3
             asset: sprockets
-          - ruby: jruby-9.3
-            gemfile: gemfiles/rails_6.1.gemfile
-            orm: active_record
-            adapter: mysql2
-            asset: sprockets
-          - ruby: jruby-9.3
-            gemfile: gemfiles/rails_6.1.gemfile
-            orm: mongoid
-            adapter: sqlite3
-            asset: sprockets
     runs-on: ubuntu-latest
     services:
       mysql:

.rubocop.yml

@@ -13,7 +13,7 @@ AllCops:
     - "vendor/bundle/**/*"
   NewCops: disable
   SuggestExtensions: false
-  TargetRubyVersion: 2.6
+  TargetRubyVersion: 2.7
 
 Gemspec/DeprecatedAttributeAssignment:
   Enabled: true

README.md

@@ -95,7 +95,6 @@ If you think you found a bug in RailsAdmin, you can [submit an issue](https://gi
 
 This library aims to support and is [tested against][ghactions] the following Ruby implementations:
 
-- Ruby 2.6
 - Ruby 2.7
 - Ruby 3.0
 - [JRuby][]

lib/rails_admin/support/csv_converter.rb

@@ -40,13 +40,6 @@ def initialize(objects = [], schema = nil)
     end
 
     def to_csv(options = {})
-      if CSV::VERSION == '3.0.2'
-        raise <<~MSG
-          CSV library bundled with Ruby 2.6.0 has encoding issue, please upgrade Ruby to 2.6.1 or later.
-          https://github.com/ruby/csv/issues/62
-        MSG
-      end
-
       options = HashWithIndifferentAccess.new(options)
       encoding_to = Encoding.find(options[:encoding_to]) if options[:encoding_to].present?
 

rails_admin.gemspec

@@ -21,7 +21,7 @@ Gem::Specification.new do |spec|
   spec.homepage = 'https://github.com/railsadminteam/rails_admin'
   spec.name = 'rails_admin'
   spec.require_paths = %w[lib]
-  spec.required_ruby_version     = '>= 2.6.0'
+  spec.required_ruby_version     = '>= 2.7.0'
   spec.required_rubygems_version = '>= 1.8.11'
   spec.summary = 'Admin for Rails'
   spec.version = RailsAdmin::Version