diff --git a/lib/data_mapper/resource.rb b/lib/data_mapper/resource.rb
index 2210e93..d5100dd 100644
--- a/lib/data_mapper/resource.rb
+++ b/lib/data_mapper/resource.rb
@@ -387,6 +387,10 @@ module DataMapper
         resource
       end
 
+      def find_or_create(search_attributes, create_attributes = {})
+        first(search_attributes) || create(search_attributes.merge(create_attributes))
+      end
+
       # TODO SPEC
       def copy(source, destination, options = {})
         repository(destination) do
diff --git a/spec/unit/resource_spec.rb b/spec/unit/resource_spec.rb
index 01831ed..1391674 100644
--- a/spec/unit/resource_spec.rb
+++ b/spec/unit/resource_spec.rb
@@ -286,6 +286,13 @@ describe "DataMapper::Resource" do
       Planet.should respond_to(:first)
       Planet.should respond_to(:all)
       Planet.should respond_to(:[])
+      Planet.should respond_to(:find_or_create)
+    end
+    
+    it 'should create if it cannot find (using find_or_create)' do
+      Planet.should_receive(:first).with({ :age => 1 }).and_return(nil)
+      Planet.should_receive(:create).with({ :age => 1, :name => "Fuzzy" }).and_return(true)
+      Planet.find_or_create({:age => 1}, { :name => "Fuzzy" })
     end
     
     it '.exists? should return whether or not the repository exists' do