added basic sequel formatter

only does models so far

lib/awesome_print.rb

@@ -29,4 +29,5 @@ unless defined?(AwesomePrint::Inspector)
   require File.dirname(__FILE__) + "/awesome_print/ext/mongo_mapper"   if defined?(MongoMapper)
   require File.dirname(__FILE__) + "/awesome_print/ext/mongoid"        if defined?(Mongoid)
   require File.dirname(__FILE__) + "/awesome_print/ext/nokogiri"       if defined?(Nokogiri)
+  require File.dirname(__FILE__) + "/awesome_print/ext/sequel"         if defined?(Sequel)
 end

lib/awesome_print/ext/sequel.rb

@@ -0,0 +1,39 @@
+# Copyright (c) 2010-2012 Michael Dvorkin
+#
+# Awesome Print is freely distributable under the terms of MIT license.
+# See LICENSE file or http://www.opensource.org/licenses/mit-license.php
+#------------------------------------------------------------------------------
+module AwesomePrint
+  module Sequel
+
+    def self.included(base)
+      base.send :alias_method, :cast_without_sequel, :cast
+      base.send :alias_method, :cast, :cast_with_sequel
+    end
+
+    # Add Sequel class names to the dispatcher pipeline.
+    #------------------------------------------------------------------------------
+    def cast_with_sequel(object, type)
+      cast = cast_without_sequel(object, type)
+      if defined?(::Sequel::Model) && object.class.ancestors.include?(::Sequel::Model)
+        cast = :sequel_document
+      end
+      cast
+    end
+
+    # Format Sequel Document object.
+    #------------------------------------------------------------------------------
+    def awesome_sequel_document(object)
+      data = object.values.sort_by { |key| key }.inject({}) do |hash, c|
+        hash[c[0].to_sym] = c[1]
+        hash
+      end
+      if !object.errors.empty?
+        data = {:errors => object.errors, :values => data}
+      end
+      "#{object} #{awesome_hash(data)}"
+    end
+  end
+end
+
+AwesomePrint::Formatter.send(:include, AwesomePrint::Sequel)