From db9617ef6fc52329bad8e4c40440b2113691f416 Mon Sep 17 00:00:00 2001
From: Sam Woodard <samwoodard@nestlabs.com>
Date: Thu, 9 Jul 2015 12:07:33 -0700
Subject: [PATCH] omit zero times from the response

---
 response.go      |  6 ++++++
 response_test.go | 23 +++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/response.go b/response.go
index d83717a..76ef78e 100644
--- a/response.go
+++ b/response.go
@@ -123,6 +123,12 @@ func visitModelNode(model interface{}, sideload bool) (*JsonApiNode, []*JsonApiN
 
 				if len(args) >= 2 {
 					if fieldValue.Type() == reflect.TypeOf(time.Time{}) {
+						isZeroMethod := fieldValue.MethodByName("IsZero")
+						isZero := isZeroMethod.Call(make([]reflect.Value, 0))[0].Interface().(bool)
+						if isZero {
+							return false
+						}
+
 						unix := fieldValue.MethodByName("Unix")
 						val := unix.Call(make([]reflect.Value, 0))[0]
 						node.Attributes[args[1]] = val.Int()
diff --git a/response_test.go b/response_test.go
index 7b69839..1ec5127 100644
--- a/response_test.go
+++ b/response_test.go
@@ -102,6 +102,29 @@ func TestSupportsAttributes(t *testing.T) {
 	}
 }
 
+func TestOmitsZeroTimes(t *testing.T) {
+	testModel := &Blog{
+		Id:        5,
+		Title:     "Title 1",
+		CreatedAt: time.Time{},
+	}
+
+	resp, err := MarshalJsonApiOnePayload(testModel)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	response := resp.Data
+
+	if response.Attributes == nil {
+		t.Fatalf("Expected attributes")
+	}
+
+	if response.Attributes["created_at"] != nil {
+		t.Fatalf("Created at was serialized even though it was a zero Time")
+	}
+}
+
 func TestRelations(t *testing.T) {
 	testModel := &Blog{
 		Id:        5,