Merge pull request #622 from fatfreecrm/fix/clear_column_cache_on_res…

…et_column_information

clears column cache on reset_column_information resolves #621

lib/acts_as_taggable_on/taggable/cache.rb

@@ -40,6 +40,10 @@ def columns
           end
         end
 
+        def reset_column_information
+          super
+          @acts_as_taggable_on_cache_columns = nil
+        end
       end
     end
 

spec/acts_as_taggable_on/caching_spec.rb

@@ -69,6 +69,12 @@
       @taggable.save!
       expect(@taggable.tag_list.sort).to eq(%w(awesome epic).sort)
     end
+
+    it 'should clear the cache on reset_column_information' do
+      CachedModel.column_names
+      CachedModel.reset_column_information
+      expect(CachedModel.instance_variable_get(:@acts_as_taggable_on_cache_columns)).to eql(nil)
+    end
   end
 
   describe 'CachingWithArray' do