Naive filter by workitem fields

lib/ruote-kit/resources/workitems.rb

@@ -6,6 +6,19 @@ class RuoteKit::Application
       @workitems = @participants.inject([]) do |memo, part|
         memo.concat store_participant.by_participant( part )
       end
+
+    elsif params[:fields]
+      # TODO: Optimize this
+      @workitems = store_participant.all.inject([]) do |memo, wi|
+        params[:fields].each do |(f,v)|
+          if wi.fields.keys.include?( f ) && wi.fields[f] == v
+            memo << wi
+          end
+        end
+
+        memo
+      end
+
     else
       @workitems = store_participant.all
     end

spec/resources/workitems_spec.rb

@@ -303,4 +303,36 @@
       last_response.should be_ok
     end
   end
+
+  describe "on fields" do
+    before(:each) do
+      @wfid_1 = launch_test_process do
+        Ruote.process_definition :name => 'one' do
+          set :field => 'foo', :value => 'bar'
+
+          sequence do
+            nada
+          end
+        end
+      end
+      @wfid_2 = launch_test_process do
+        Ruote.process_definition :name => 'one' do
+          set :field => 'foo', :value => 'baz'
+
+          sequence do
+            nada
+          end
+        end
+      end
+    end
+
+    it "should filter accordingly" do
+      get '/workitems.json', :fields => { 'foo' => 'bar' }
+
+      last_response.should be_ok
+
+      last_response.json_body['workitems'].size.should be(1)
+      last_response.json_body['workitems'].first['wfid'].should == @wfid_1
+    end
+  end
 end