fix serialize relationship ids as scalars

Author: nicosefer

package.json

@@ -1,6 +1,6 @@
 {
   "name": "node-jsonapi-serializer",
-  "version": "2.1.0",
+  "version": "2.1.1",
   "description": "GOintegro json-api extended serializer/deserializer",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",

src/index.ts

@@ -8,7 +8,9 @@ import {
   get,
   isEmpty,
   isNull,
+  isNumber,
   isObject,
+  isString,
   isUndefined,
   kebabCase,
   keys,
@@ -344,7 +346,7 @@ export class JSONAPISerializer {
   }
 
   private serializeEntity(
-    data: JSONApiResource,
+    data: any,
     config: SerializerConfig,
     includedEntities: JSONApiResource[],
     serializedEntities: JSONApiResource[],
@@ -532,6 +534,8 @@ export class JSONAPISerializer {
 
             if (v?.id) {
               output.id = v.id.toString();
+            } else if (isString(v) || isNumber(v)) {
+              output.id = v.toString();
             }
             return output;
           });

tests/post.test.ts

@@ -1,13 +1,24 @@
 import { JSONAPIDeserializer, JSONAPISerializer } from "../src";
 
-test("JSONAPISerializer: compound nested", async () => {
+test("JSONAPISerializer:compound_nested", async () => {
+
+  class UserSerializer extends JSONAPISerializer {
+    public serializerConfig = () => {
+      return {
+        type: "users",
+        attributes: [],
+      };
+    };
+  }
+
   class PostSerializer extends JSONAPISerializer {
     public serializerConfig = () => {
       return {
         type: "posts",
         attributes: ["content"],
         relationships: {
           poll: { config: new PollSerializer().serializerConfig },
+          mentions: {config: new UserSerializer().serializerConfig}
         },
       };
     };
@@ -35,6 +46,7 @@ test("JSONAPISerializer: compound nested", async () => {
 
   const postData = {
     content: "Test",
+    mentions: ["1234"],
     poll: {
       ttl: "3",
       options: [
@@ -54,6 +66,8 @@ test("JSONAPISerializer: compound nested", async () => {
     compound: true,
   });
 
+  console.log(JSON.stringify(output));
+
   expect(
     output.data.relationships.poll.data.relationships.options.data[0].attributes
       .title