Truncate votes api timestamp to hour

app/models/vote.rb

@@ -10,4 +10,8 @@ class Vote < ActsAsVotable::Vote
   def public_voter
     User.select("gender, geozone_id, date_of_birth").where(id: self.voter_id).first
   end
+
+  def public_timestamp
+    self.created_at.change(min: 0)
+  end
 end

config/initializers/graphql.rb

@@ -77,10 +77,10 @@ API_TYPE_DEFINITIONS = {
     kind:           :string
   },
   Vote => {
-    votable_id:     :integer,
-    votable_type:   :string,
-    created_at:     :string,
-    public_voter:   Voter
+    votable_id:       :integer,
+    votable_type:     :string,
+    public_timestamp: :string,
+    public_voter:     Voter
   }
 }
 

spec/models/vote_spec.rb

@@ -91,4 +91,11 @@ describe 'Vote' do
       expect(Vote.public_for_api).not_to include(vote)
     end
   end
+
+  describe '#public_timestamp' do
+    it "truncates created_at timestamp up to minutes" do
+      vote = create(:vote, created_at: Time.zone.parse('2016-02-10 15:30:45'))
+      expect(vote.public_timestamp).to eq(Time.zone.parse('2016-02-10 15:00:00'))
+    end
+  end
 end