Rails 7 support

.env.local

@@ -0,0 +1 @@
+DATABASE_URL="mysql2://root:@mysql/"

.github/workflows/tests.yml

@@ -10,14 +10,14 @@ jobs:
     strategy:
       matrix:
         ruby:
-          - '2.7'
           - '3.0'
           - '3.1'
           - '3.2'
+          - '3.3'
         rails:
-          - '6.0'
           - '6.1'
-
+          - '7.0'
+          - '7.1'
     runs-on: ubuntu-latest
 
     name: RSpec (Rails ${{ matrix.rails }}) (Ruby ${{ matrix.ruby }})

.gitignore

@@ -11,3 +11,4 @@
 .rspec_status
 
 gemfiles/*.lock
+.env.local

Appraisals

@@ -1,12 +1,11 @@
-appraise "rails-6.0" do
-  gem "rails", "~> 6.0.0"
+appraise "rails-6.1" do
+  gem "rails", "~> 6.1"
 end
 
-appraise "rails-6.1" do
-  gem "rails", "~> 6.1.0"
+appraise "rails-7.0" do
+  gem "rails", "~> 7.0"
 end
 
-# Rails 7.0 doesn't work yet
-# appraise "rails-7.0" do
-#   gem "rails", "~> 7.0"
-# end
+appraise "rails-7.1" do
+  gem "rails", "~> 7.1"
+end

Dockerfile

@@ -6,4 +6,5 @@ RUN mkdir -p lib/sql_enum gemfiles
 COPY lib/sql_enum/version.rb  ./lib/sql_enum/
 COPY gemfiles/*.gemfile gemfiles/
 COPY sql_enum.gemspec Gemfile Gemfile.lock Appraisals ./
-RUN bundle install && exec appraisal install
+RUN bundle install && \
+    bundle exec appraisal install

Gemfile

@@ -1,6 +1,6 @@
 source "https://rubygems.org"
 
-git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
+git_source(:github) { |repo_name| "https://github.com/#{repo_name}" }
 
 # Specify your gem's dependencies in sql_enum.gemspec
 gemspec

Gemfile.lock

@@ -1,43 +1,48 @@
 PATH
   remote: .
   specs:
-    sql_enum (0.4.0)
-      activerecord (>= 6.0, < 7.0)
-      activesupport (>= 6.0, < 7.0)
+    sql_enum (1.0.0)
+      activerecord (>= 6.1.0)
+      activesupport (>= 6.1.0)
       mysql2
 
 GEM
   remote: https://rubygems.org/
   specs:
-    activemodel (6.1.7.6)
-      activesupport (= 6.1.7.6)
-    activerecord (6.1.7.6)
-      activemodel (= 6.1.7.6)
-      activesupport (= 6.1.7.6)
-    activesupport (6.1.7.6)
+    activemodel (7.0.8)
+      activesupport (= 7.0.8)
+    activerecord (7.0.8)
+      activemodel (= 7.0.8)
+      activesupport (= 7.0.8)
+    activesupport (7.0.8)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
       tzinfo (~> 2.0)
-      zeitwerk (~> 2.3)
     appraisal (2.5.0)
       bundler
       rake
       thor (>= 0.14.0)
-    concurrent-ruby (1.2.2)
-    debug (1.8.0)
-      irb (>= 1.5.0)
-      reline (>= 0.3.1)
+    awesome_print (1.9.2)
+    concurrent-ruby (1.2.3)
+    debug (1.9.1)
+      irb (~> 1.10)
+      reline (>= 0.3.8)
     diff-lcs (1.5.0)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
-    io-console (0.6.0)
-    irb (1.7.4)
-      reline (>= 0.3.6)
-    minitest (5.19.0)
+    io-console (0.7.2)
+    irb (1.11.1)
+      rdoc
+      reline (>= 0.4.2)
+    minitest (5.21.2)
     mysql2 (0.5.5)
-    rake (13.0.6)
-    reline (0.3.8)
+    psych (5.1.2)
+      stringio
+    rake (13.1.0)
+    rdoc (6.6.2)
+      psych (>= 4.0.0)
+    reline (0.4.2)
       io-console (~> 0.5)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
@@ -52,22 +57,23 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.12.0)
     rspec-support (3.12.1)
-    thor (1.2.2)
+    stringio (3.1.0)
+    thor (1.3.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    zeitwerk (2.6.11)
 
 PLATFORMS
   ruby
   x86_64-linux
 
 DEPENDENCIES
   appraisal
+  awesome_print
   bundler
   debug
   rake (~> 13.0)
   rspec (~> 3.0)
   sql_enum!
 
 BUNDLED WITH
-   2.2.30
+   2.5.5

README.md

@@ -2,6 +2,12 @@
 
 Enables usage of native sql enums with ActiveRecord
 
+## NOTE
+
+Version 1.0 of this is compatible with Rails 7 and above.
+
+For Rails versions below Rails 7, use version 0.4
+
 ## Installation
 
 Add this line to your application's Gemfile:

docker-compose.yml

@@ -12,12 +12,13 @@ services:
 
   mysql:
     image: mysql:5.7
+    platform: linux/amd64
     environment:
       - MYSQL_ALLOW_EMPTY_PASSWORD=yes
       - MYSQL_DATABASE
       - MYSQL_USER
       - MYSQL_PASSWORD
     healthcheck:
-      test: ["CMD", "mysqladmin" ,"ping", "-h", "localhost"]
+      test: ["CMD", "mysqladmin", "ping", "-h", "localhost"]
       timeout: 20s
       retries: 10

gemfiles/rails_6.1.gemfile

@@ -2,6 +2,6 @@
 
 source "https://rubygems.org"
 
-gem "rails", "~> 6.1.0"
+gem "rails", "~> 6.1"
 
 gemspec path: "../"

gemfiles/rails_7.0.gemfile

@@ -2,6 +2,6 @@
 
 source "https://rubygems.org"
 
-gem "rails", "~> 7.0.0"
+gem "rails", "~> 7.0"
 
 gemspec path: "../"

gemfiles/rails_5.1.gemfile → gemfiles/rails_7.1.gemfile

@@ -2,6 +2,6 @@
 
 source "https://rubygems.org"
 
-gem "rails", "~> 5.1.0"
+gem "rails", "~> 7.1"
 
 gemspec path: "../"

lib/active_record/connection_adapters/abstract_mysql.rb

@@ -1,21 +1,46 @@
-# This module fails in Rails 7.0 becuase the method being modified has been
-# changed to a class method.
-
 module ActiveRecord
   module ConnectionAdapters
     class AbstractMysqlAdapter
-      def initialize_type_map_with_enum(m = type_map)
-        initialize_without_enum(m)
-        register_enum_type(m)
+      class << self
+        def register_enum_type(mapping)
+          mapping.register_type(%r(enum)i) do |sql_type|
+            Type::Enum.new(limit: sql_type.to_s.scan(/'(.*?)'/).flatten)
+          end
+        end
       end
 
-      alias_method :initialize_without_enum, :initialize_type_map
-      alias_method :initialize_type_map, :initialize_type_map_with_enum
+      # In Rails 6.1, registering the enum type is an instance method and is
+      # done on initialization, In Rails 7.0 it is a class method and
+      # the registration happens when the class is loaded. So, in Rails 6.1,
+      # we can override the `initialize_type_map` method to register the enum
+      # but in Rails 7.1, we need to call register_enum_type explicitly.
 
-      def register_enum_type(mapping)
-        mapping.register_type(%r(enum)i) do |sql_type|
-          Type::Enum.new(limit: sql_type.scan(/'(.*?)'/).flatten)
+      if SqlEnum.rails_version_match?("6.1")
+        module SqlEnumMapper
+          def initialize_type_map(m = type_map)
+            super(m)
+            AbstractMysqlAdapter.register_enum_type(m)
+          end
         end
+
+        ActiveRecord::ConnectionAdapters::Mysql2Adapter.prepend(SqlEnumMapper)
+      end
+
+
+      if SqlEnum.rails_version_match?("7.0")
+        [
+          ActiveRecord::ConnectionAdapters::Mysql2Adapter::TYPE_MAP,
+          ActiveRecord::ConnectionAdapters::Mysql2Adapter::TYPE_MAP_WITH_BOOLEAN
+        ].each do |m|
+          AbstractMysqlAdapter.register_enum_type(m)
+        end
+      end
+
+      # Rails 7.1 drops the TYPE_MAP_WITH_BOOLEAN constant
+      if SqlEnum.rails_version_match?("7.1")
+          AbstractMysqlAdapter.register_enum_type(
+            ActiveRecord::ConnectionAdapters::Mysql2Adapter::TYPE_MAP
+          )
       end
     end
   end

lib/sql_enum.rb

@@ -7,6 +7,10 @@ def self.configure
     self.configuration ||= Configuration.new
     yield(configuration)
   end
+
+  def self.rails_version_match?(version_string)
+    ActiveSupport.version.to_s.start_with?(version_string)
+  end
 end
 
 require 'active_record'

lib/sql_enum/class_methods.rb

@@ -1,6 +1,9 @@
 module SqlEnum
   module ClassMethods
     def sql_enum(column_name, options = {})
+      # skip redefinitions
+      return if defined_enums.key?(column_name.to_s)
+
       # Query values
       enum_column = EnumColumn.new(table_name, column_name)
       values_map = enum_column.values.to_h { |value| [value.to_sym, value.to_s] }
@@ -14,20 +17,15 @@ def sql_enum(column_name, options = {})
 
       # Override reader to return symbols
       type_definition = ->(subtype) { EnumType.new(attr, send(column_name.to_s.pluralize), subtype) }
-      case method(:decorate_attribute_type).arity
-      when 2 # Rails 5.1, 5.2, 6.0
-        decorate_attribute_type(column_name, :enum, &type_definition)
-      else
-        decorate_attribute_type(column_name, &type_definition)
-      end
+      attribute(column_name, &type_definition)
 
       prefix_str = format_affix(column_name, prefix, suffix: '_')
       suffix_str = format_affix(column_name, suffix, prefix: '_')
 
       # Fix query methods to compare symbols to symbols
       values_map.each_value do |value|
-        method_name = "#{prefix_str}#{value}#{suffix_str}"
-        define_method("#{method_name}?") { self[column_name] == value.to_sym }
+        method_name = "#{prefix_str}#{value}#{suffix_str}?"
+        define_method(method_name) { self[column_name] == value.to_sym }
       end
     end
 

lib/sql_enum/version.rb

@@ -1,3 +1,3 @@
 module SqlEnum
-  VERSION = "0.4.0"
+  VERSION = "1.0.0"
 end

spec/spec_helper.rb

@@ -2,6 +2,7 @@
 require "sql_enum"
 
 require 'debug'
+require "awesome_print"
 
 Dir['spec/support/**/*.rb'].each { |f| require File.expand_path(f) }
 
@@ -15,4 +16,16 @@
   config.expect_with :rspec do |c|
     c.syntax = :expect
   end
+
+  # allow "fit" examples
+  config.filter_run_when_matching :focus
+  config.include DefineConstantMacros
+
+  config.before(:all) do
+    ActiveRecord::Base.establish_connection(ENV.fetch('DATABASE_URL'))
+  end
+
+  config.after do
+    clear_generated_tables
+  end
 end

spec/sql_enum_spec.rb

@@ -1,5 +1,3 @@
-require 'spec_helper'
-
 RSpec.describe SqlEnum do
   it "has a version number" do
     expect(SqlEnum::VERSION).not_to be_nil
@@ -11,12 +9,12 @@
 
     before do
       SqlEnum.configure { |config| config.default_prefix = true }
-
       define_model('Task',
                    status: [:enum, limit: statuses, default: 'pending'],
                    priority: [:enum, limit: priorities]) do
         sql_enum :status
         sql_enum :priority, _prefix: false, _suffix: true
+        sql_enum :status # duplicate should be no-op
       end
     end
 

spec/support/macros/define_constant.rb

@@ -56,15 +56,3 @@ def created_tables
     @created_tables ||= []
   end
 end
-
-RSpec.configure do |config|
-  config.include DefineConstantMacros
-
-  config.before(:all) do
-    ActiveRecord::Base.establish_connection(ENV.fetch('DATABASE_URL'))
-  end
-
-  config.after do
-    clear_generated_tables
-  end
-end