Initial commit of code

init.rb

@@ -0,0 +1,7 @@
+require 'active_record_ext'
+require 'array_ext'
+
+# extend activerecord with the :preload method
+ActiveRecord::Base.send(:extend, AssociationsPreload::Base)
+# add :preload method to array
+Array.send(:include, AssociationsPreload::Array)

lib/active_record_ext.rb

@@ -0,0 +1,9 @@
+module AssociationsPreload
+  module Base
+    def preload(records, *args)
+      include_associations = send(:merge_includes, send(:scope, :find, :include), args)
+      preload_associations(records, include_associations) unless include_associations.empty?
+      records
+    end
+  end
+end

lib/array_ext.rb

@@ -0,0 +1,8 @@
+module AssociationsPreload
+  module Array
+    def preload(*args)
+      return self if self.empty?
+      first.class.preload(self, *args)
+    end
+  end
+end