Add compatibility for Rails 3

Author: Jake Moffatt

lib/fix_db_schema_conflicts/schema_dumper.rb

@@ -1,3 +1,5 @@
+require 'delegate'
+
 module ActiveRecord
   # = Active Record Schema Dumper
   #

lib/fix_db_schema_conflicts/version.rb

@@ -1,3 +1,3 @@
 module FixDBSchemaConflicts
-  VERSION='1.0.0'
+  VERSION='1.0.1'
 end

lib/tasks/db.rake

@@ -2,7 +2,11 @@ namespace :db do
   namespace :schema do
     task :dump do
       puts "Dumping database schema with fix-db-schema-conflicts gem"
-      filename = ENV['SCHEMA'] || File.join(ActiveRecord::Tasks::DatabaseTasks.db_dir, 'schema.rb')
+      filename = ENV['SCHEMA'] || if defined? ActiveRecord::Tasks::DatabaseTasks
+        File.join(ActiveRecord::Tasks::DatabaseTasks.db_dir, 'schema.rb')
+      else
+        "#{Rails.root}/db/schema.rb"
+      end
       rubocop_yml = File.expand_path('../../../.rubocop_schema.yml', __FILE__)
       `rubocop --auto-correct --config #{rubocop_yml} #{filename}`
       `sed -E -e 's/, +/, /g' #{filename} > db/schema.fixed.rb`