From b4d4fc666ecea727e280643e540cb68199f0eb38 Mon Sep 17 00:00:00 2001
From: Nikita Tokarchuk <tokarchuk+bitbucket@nevisq.com>
Date: Thu, 20 Dec 2018 01:49:33 +0100
Subject: [PATCH] ObjectId base might be empty

---
 mongox/base/objectid.go | 5 ++++-
 mongox/common.go        | 9 +++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/mongox/base/objectid.go b/mongox/base/objectid.go
index 5ee9ad7..356c540 100644
--- a/mongox/base/objectid.go
+++ b/mongox/base/objectid.go
@@ -1,12 +1,15 @@
 package base
 
 import (
+	"github.com/mainnika/mongox-go-driver/mongox"
 	"github.com/mongodb/mongo-go-driver/bson/primitive"
 )
 
+var _ mongox.BaseObjectID = &ObjectID{}
+
 // ObjectID is a structure with objectId as an _id field
 type ObjectID struct {
-	ID primitive.ObjectID `bson:"_id" json:"_id"`
+	ID primitive.ObjectID `bson:"_id,omitempty" json:"_id,omitempty"`
 }
 
 // GetID returns an _id
diff --git a/mongox/common.go b/mongox/common.go
index 1fa4127..fa985a2 100644
--- a/mongox/common.go
+++ b/mongox/common.go
@@ -1,5 +1,9 @@
 package mongox
 
+import (
+	"github.com/mongodb/mongo-go-driver/bson/primitive"
+)
+
 type Saver interface {
 	Save(db *Database) error
 }
@@ -11,3 +15,8 @@ type Deleter interface {
 type Loader interface {
 	Load(db *Database, filters ...interface{}) error
 }
+
+type BaseObjectID interface {
+	GetID() primitive.ObjectID
+	SetID(id primitive.ObjectID)
+}