Meta data for Resource objects (#15)

* Add Meta inside the data object

* Fix import order

* Update serializer-options.ts

Fix import orders

* Added tests for the dataMeta tag;

Co-authored-by: christianengledercadt <44844093+christianengledercadt@users.noreply.github.com>
Co-authored-by: Christian Engleder <ce@cadt.at>

Author: 3 people

src/serializer-options.ts

@@ -14,6 +14,7 @@ export interface SerializerOptions {
   relationshipLinks?: Links,
   relationshipMeta?: RelationshipMeta,
   dataLinks?: Links,
+  dataMeta?: any,
   included?: boolean,
   includedLinks?: Links,
   embed?: boolean,

src/serializer-utils.ts

@@ -145,6 +145,11 @@ export class SerializerUtils {
       data.links = this.getLinks(this.record, this.opts.dataLinks);
     }
 
+    // Data meta.
+    if (this.opts.dataMeta) {
+      data.meta = this.getMeta(this.record, this.opts.dataMeta);
+    }
+
     _.each(this.opts.attributes, (attribute) => {
       var splittedAttributes = attribute.split(':');
 

test/serialize.js

@@ -195,6 +195,40 @@ describe('Options', function () {
     });
   });
 
+  describe('dataMeta', function () {
+    it('should set the dataMeta key (plain)', function (done) {
+      var dataSet = {
+        id: '1',
+        firstName: 'Sandro',
+        lastName: 'Munda',
+      };
+
+      var json = new JSONAPISerializer('user', {
+        attributes: ['firstName', 'lastName'],
+        dataMeta: { count: 1 }
+      }).serialize(dataSet);
+
+      expect(json.data.meta.count).equal(1);
+      done();
+    });
+
+    it('should set the dataMeta key (function)', function (done) {
+      var dataSet = {
+        id: '1',
+        firstName: 'Sandro',
+        lastName: 'Munda',
+      };
+
+      var json = new JSONAPISerializer('user', {
+        attributes: ['firstName', 'lastName'],
+        dataMeta: { count: function(record) { return 1; } }
+      }).serialize(dataSet);
+
+      expect(json.data.meta.count).equal(1);
+      done();
+    });
+  });
+
   describe('included', function () {
     it('should include or not the compound documents', function (done) {
       var dataSet = [{