Add MarshalManyPayloadWithoutIncluded (#56)

* fix spelling in documentation

* add MarshalManyPayloadWithoutIncluded

does the same as `MarshalOnePayloadWithoutIncluded` but for
MarshalManyPayload

* Refactored MarshalManyPayloadWithoutIncluded to use the MarshalMany func

response.go

@@ -48,7 +48,7 @@ func MarshalOnePayload(w io.Writer, model interface{}) error {
 
 // MarshalOnePayloadWithoutIncluded writes a jsonapi response with one object,
 // without the related records sideloaded into "included" array. If you want to
-// serialzie the realtions into the "included" array see MarshalOnePayload.
+// serialize the relations into the "included" array see MarshalOnePayload.
 //
 // model interface{} should be a pointer to a struct.
 func MarshalOnePayloadWithoutIncluded(w io.Writer, model interface{}) error {
@@ -83,6 +83,31 @@ func MarshalOne(model interface{}) (*OnePayload, error) {
 	return payload, nil
 }
 
+// MarshalManyPayloadWithoutIncluded writes a jsonapi response with many records,
+// without the related records sideloaded into "included" array. If you want to
+// serialize the relations into the "included" array see MarshalManyPayload.
+//
+// models interface{} should be a slice of struct pointers.
+func MarshalManyPayloadWithoutIncluded(w io.Writer, models interface{}) error {
+	m, err := convertToSliceInterface(&models)
+	if err != nil {
+		return err
+	}
+	payload, err := MarshalMany(m)
+	if err != nil {
+		return err
+	}
+
+	// Empty the included
+	payload.Included = []*Node{}
+
+	if err := json.NewEncoder(w).Encode(payload); err != nil {
+		return err
+	}
+
+	return nil
+}
+
 // MarshalManyPayload writes a jsonapi response with many records, with related
 // records sideloaded, into "included" array. This method encodes a response for
 // a slice of records, hence data will be an array of records rather than a

response_test.go

@@ -715,6 +715,33 @@ func TestMarshalMany_WithSliceOfStructPointers(t *testing.T) {
 	}
 }
 
+func TestMarshalManyWithoutIncluded(t *testing.T) {
+	var data []*Blog
+	for len(data) < 2 {
+		data = append(data, testBlog())
+	}
+
+	out := bytes.NewBuffer(nil)
+	if err := MarshalManyPayloadWithoutIncluded(out, data); err != nil {
+		t.Fatal(err)
+	}
+
+	resp := new(ManyPayload)
+	if err := json.NewDecoder(out).Decode(resp); err != nil {
+		t.Fatal(err)
+	}
+
+	d := resp.Data
+
+	if len(d) != 2 {
+		t.Fatalf("data should have two elements")
+	}
+
+	if resp.Included != nil {
+		t.Fatalf("Encoding json response did not omit included")
+	}
+}
+
 func TestMarshalMany_SliceOfInterfaceAndSliceOfStructsSameJSON(t *testing.T) {
 	structs := []*Book{
 		&Book{ID: 1, Author: "aren55555", ISBN: "abc"},