diff --git a/3rdparty/serializer b/3rdparty/serializer
index f9d81fc..51500a4 160000
--- a/3rdparty/serializer
+++ b/3rdparty/serializer
@@ -1 +1 @@
-Subproject commit f9d81fcc6244271b3926891b0c86554e1e6b967e
+Subproject commit 51500a497933444196942ee0db6628338a0422af
diff --git a/src/defines.h b/src/defines.h
index 50e3cbe..318f99b 100644
--- a/src/defines.h
+++ b/src/defines.h
@@ -83,10 +83,22 @@ public:                                                                        \
     }
 
 #define NUT_FOREIGN_KEY(type, keytype, name, read, write)                     \
+    Q_PROPERTY(Nut::Row<type> name READ read WRITE write)                      \
+    NUT_DECLARE_FIELD(keytype, name##Id, read##Id, write##Id)                  \
+    NUT_INFO(__nut_FOREIGN_KEY, name, type)                                   \
+    Nut::Row<type> m_##name;                                                   \
+public:                                                                        \
+    Nut::Row<type> read() const { return m_##name ; }                          \
+    void write(Nut::Row<type> name){                                           \
+        m_##name = name;                                                       \
+    }
+
+#define NUT_FOREIGN_KEY_DECLARE(type, keytype, name, read, write)                     \
     NUT_INFO(__nut_FIELD, name##Id, 0)                                             \
     NUT_INFO(__nut_FOREIGN_KEY, name, type)                                   \
     Nut::Row<type> m_##name; \
     keytype m_##name##Id; \
+    Q_PROPERTY(Nut::Row<type> name READ read WRITE write)                                \
     Q_PROPERTY(keytype name##Id READ read##Id WRITE write##Id)                                \
 public:                                                                        \
     Nut::Row<type> read() const;                          \
@@ -115,6 +127,7 @@ public:                                                                        \
         return m_##name##Id;                                                       \
     }                                                                          \
     void class::write##Id(keytype name##Id){                                                     \
+        propertyChanged(QT_STRINGIFY2(name##Id));                                                \
         m_##name##Id = name##Id;                                                       \
         m_##name = nullptr; \
         propertyChanged(QT_STRINGIFY2(name##Id));                                                \
diff --git a/test/common/comment.h b/test/common/comment.h
index 83fd55b..e7628ab 100644
--- a/test/common/comment.h
+++ b/test/common/comment.h
@@ -21,8 +21,8 @@ class Comment : public Table
     NUT_DECLARE_FIELD(QDateTime, saveDate, saveDate, setSaveDate)
     NUT_DECLARE_FIELD(qreal, point, point, setPoint)
 
-    NUT_FOREIGN_KEY(Post, int, post, post, setPost)
-    NUT_FOREIGN_KEY(User, int, author, author, setAuthor)
+    NUT_FOREIGN_KEY_DECLARE(Post, int, post, post, setPost)
+    NUT_FOREIGN_KEY_DECLARE(User, int, author, author, setAuthor)
 
 public:
     Q_INVOKABLE explicit Comment(QObject *parentTableSet = nullptr);
diff --git a/test/common/score.h b/test/common/score.h
index a87fa08..f8c3579 100644
--- a/test/common/score.h
+++ b/test/common/score.h
@@ -15,8 +15,8 @@ class Score : public Nut::Table
 
     NUT_DECLARE_FIELD(int, score, score, setScore)
 
-    NUT_FOREIGN_KEY(Post, int, post, post, setPost)
-    NUT_FOREIGN_KEY(User, QUuid, author, author, setAuthor)
+    NUT_FOREIGN_KEY_DECLARE(Post, int, post, post, setPost)
+    NUT_FOREIGN_KEY_DECLARE(User, QUuid, author, author, setAuthor)
 
 public:
     Q_INVOKABLE Score(QObject *parent = Q_NULLPTR);
diff --git a/test/tst_basic/tst_basic.cpp b/test/tst_basic/tst_basic.cpp
index c512790..55d59c3 100644
--- a/test/tst_basic/tst_basic.cpp
+++ b/test/tst_basic/tst_basic.cpp
@@ -78,13 +78,13 @@ void BasicTest::createPost()
         comment->setMessage("comment #" + QString::number(i));
         comment->setSaveDate(QDateTime::currentDateTime());
         comment->setAuthorId(user->id());
-        db.comments()->append(comment);
+        newPost->comments()->append(comment);
+    }
+    for (int i = 0; i < 10; ++i) {
+        auto score = Nut::create<Score>();
+        score->setScore(i % 5);
+        newPost->scores()->append(score);
     }
-//    for (int i = 0; i < 10; ++i) {
-//        auto score = Nut::create<Score>();
-//        score->setScore(i % 5);
-//        newPost->scores()->append(score);
-//    }
 
     db.saveChanges();