add Hashie::Mash#extractable_options?

.rubocop_todo.yml

@@ -12,7 +12,7 @@ Metrics/AbcSize:
 # Offense count: 2
 # Configuration parameters: CountComments.
 Metrics/ClassLength:
-  Max: 165
+  Max: 170
 
 # Offense count: 8
 Metrics/CyclomaticComplexity:

CHANGELOG.md

@@ -10,6 +10,7 @@
 * [#254](https://github.com/intridea/hashie/pull/254): Added public utility methods for stringify and symbolize keys - [@maxlinc](https://github.com/maxlinc).
 * [#261](https://github.com/intridea/hashie/pull/261): Fixed bug where Dash.property modifies argument object - [@d_tw](https://github.com/d_tw).
 * [#264](https://github.com/intridea/hashie/pull/264): Methods such as abc? return true/false with Hashie::Extensions::MethodReader - [@Zloy](https://github.com/Zloy).
+* [#269](https://github.com/intridea/hashie/pull/269): Add #extractable_options? so ActiveSupport Array#extract_options! can extract it - [@ridiculous](https://github.com/ridiculous).
 * Your contribution here.
 
 ## 3.3.2 (11/26/2014)

lib/hashie/mash.rb

@@ -250,6 +250,11 @@ def method_missing(method_name, *args, &blk)
       end
     end
 
+    # play nice with ActiveSupport Array#extract_options!
+    def extractable_options?
+      true
+    end
+
     protected
 
     def method_suffix(method_name)

spec/hashie/mash_spec.rb

@@ -639,4 +639,16 @@ class SubMash < Hashie::Mash
       end
     end
   end
+
+  describe '#extractable_options?' do
+    require 'active_support'
+
+    subject { described_class.new(name: 'foo') }
+    let(:args) { [101, 'bar', subject] }
+
+    it 'can be extracted from an array' do
+      expect(args.extract_options!).to eq subject
+      expect(args).to eq [101, 'bar']
+    end
+  end
 end