Updated how activerecord-import loads so it is done after a connection is established in ActiveRecord. This supports loading import for multiple adapters automatically w/o having to have a person require those specifically.

lib/activerecord-import.rb

@@ -1,2 +1,16 @@
-require File.join File.dirname(__FILE__),  "activerecord-import/base"
-ActiveRecord::Import.load
+class ActiveRecord::Base
+  class << self
+    def establish_connection_with_activerecord_import(*args)
+      establish_connection_without_activerecord_import(*args)
+      ActiveSupport.run_load_hooks(:active_record_connection_established, connection)
+    end
+    alias_method_chain :establish_connection, :activerecord_import
+  end
+end
+
+ActiveSupport.on_load(:active_record_connection_established) do |connection|
+  if !ActiveRecord.const_defined?(:Import) || !ActiveRecord::Import.respond_to?(:load_from_connection)
+    require File.join File.dirname(__FILE__),  "activerecord-import/base"
+  end
+  ActiveRecord::Import.load_from_connection connection
+end

lib/activerecord-import/base.rb

@@ -11,13 +11,17 @@ module ActiveRecord::Import
     require File.join(AdapterPath,"/#{adapter}_adapter")
   end
 
-  # Loads the import functionality for the current ActiveRecord::Base.connection
-  def self.load
-    config = ActiveRecord::Base.connection.instance_variable_get :@config
-    require_adapter config[:adapter]
+  # Loads the import functionality for the passed in ActiveRecord connection
+  def self.load_from_connection(connection)
+    import_adapter = "ActiveRecord::Import::#{connection.class.name.demodulize}::InstanceMethods"
+    unless connection.class.ancestors.map(&:name).include?(import_adapter)
+      config = connection.instance_variable_get :@config
+      require_adapter config[:adapter]
+    end
   end
 end
 
+
 this_dir = Pathname.new File.dirname(__FILE__)
 require this_dir.join("import")
 require this_dir.join("active_record/adapters/abstract_adapter")

test/test_helper.rb

@@ -28,10 +28,11 @@ FileUtils.mkdir_p 'log'
 ActiveRecord::Base.logger = Logger.new("log/test.log")
 ActiveRecord::Base.logger.level = Logger::DEBUG
 ActiveRecord::Base.configurations["test"] = YAML.load(test_dir.join("database.yml").open)[adapter]
+
+
+require "activerecord-import"
 ActiveRecord::Base.establish_connection "test"
 
-# load the library
-require "activerecord-import"
 
 ActiveSupport::Notifications.subscribe(/active_record.sql/) do |event, _, _, _, hsh|
   ActiveRecord::Base.logger.info hsh[:sql]