Fix #17: Add id and localKey on relations associations

Author: Tronix117

.gitignore

@@ -18,4 +18,6 @@ coverage
 node_modules
 npm-debug.log
 .vscode
-coverage
+coverage
+dist
+!dist/js-data-jsonapi-light.*

src/deserializer.ts

@@ -70,8 +70,18 @@ export function jsonApiDeserialize(mapper:Mapper, res:any, opts:any){
             continue;
           }
 
+          // In any case we include the Id in the attributes if we are in the
+          // case of a `belongsTo`
+          // For `hasOne`, like it's the remote object which should include
+          // the key, we don't do anything.
+          if (relation.type === 'belongsTo') {
+            item.attributes[relation.localKey] = link.id;
+          }
+
           if (itemsIndexed[link.type] && itemsIndexed[link.type][link.id]) {
+            let remoteIdAttribute = relation.relatedCollection.idAttribute;
             let itemLinked:any = itemsIndexed[link.type][link.id];
+            itemLinked.attributes[remoteIdAttribute] = link.id;
             item.attributes[relation.localField] = itemLinked.attributes;
           }
         } else if (relation.type === 'hasMany') {

test/api/articles.json

@@ -0,0 +1,29 @@
+{
+  "links": {
+    "self": "api/articles.json"
+  },
+  "data": [
+    {
+      "type": "Article",
+      "id": "017bc4b9-014c-4873-bbda-12c4f5475740",
+      "attributes": {
+        "title": "What's up today?",
+        "content": "Nothing much..."
+      },
+      "relationships": {
+        "author": {
+          "links": {
+            "related": "api/articles/017bc4b9-014c-4873-bbda-12c4f5475740/authors.json"
+          },
+          "data": {
+            "id": "e81fea3d-6379-4137-8068-7d70a90a1a7c",
+            "type": "User"
+          }
+        }
+      },
+      "links": {
+        "self": "api/articles/017bc4b9-014c-4873-bbda-12c4f5475740.json"
+      }
+    }
+  ]
+}