diff --git a/loopback-blog/common/models/post.json b/loopback-blog/common/models/post.json
index e939910..31bba9a 100644
--- a/loopback-blog/common/models/post.json
+++ b/loopback-blog/common/models/post.json
@@ -17,7 +17,13 @@
     }
   },
   "validations": [],
-  "relations": {},
+  "relations": {
+    "author": {
+      "type": "belongsTo",
+      "model": "Author",
+      "foreignKey": ""
+    }
+  },
   "acls": [],
   "methods": {}
 }