Pass deeply nested keys correctly to afterSave triggers

spec/ParseAPI.spec.js

@@ -691,6 +691,32 @@ describe('miscellaneous', function () {
       );
   });
 
+  it('test afterSave with deeply nested keys (#7384)', async () => {
+    let triggerTime = 0;
+    Parse.Cloud.afterSave('GameScore', function (req) {
+      const object = req.object;
+      expect(object instanceof Parse.Object).toBeTruthy();
+      if (triggerTime == 0) {
+        // Create
+        expect(object.get('a')).toEqual({ b: { c: 0 } });
+      } else if (triggerTime == 1) {
+        // Update
+        expect(object.get('a')).toEqual({ b: { c: 1 } });
+      } else {
+        throw new Error();
+      }
+      triggerTime++;
+    });
+
+    const obj = new Parse.Object('GameScore');
+    obj.set('a', { b: { c: 0 } });
+    await obj.save();
+    obj.set('a.b.c', 1);
+    await obj.save();
+    // Make sure the checking has been triggered
+    expect(triggerTime).toBe(2);
+  });
+
   it('test afterSave get original object on update', function (done) {
     let triggerTime = 0;
     // Register a mock beforeSave hook

src/RestWrite.js

@@ -1589,19 +1589,7 @@ RestWrite.prototype.buildUpdatedObject = function (extraData) {
   const updatedObject = triggers.inflate(extraData, this.originalData);
   Object.keys(this.data).reduce(function (data, key) {
     if (key.indexOf('.') > 0) {
-      if (typeof data[key].__op === 'string') {
-        updatedObject.set(key, data[key]);
-      } else {
-        // subdocument key with dot notation { 'x.y': v } => { 'x': { 'y' : v } })
-        const splittedKey = key.split('.');
-        const parentProp = splittedKey[0];
-        let parentVal = updatedObject.get(parentProp);
-        if (typeof parentVal !== 'object') {
-          parentVal = {};
-        }
-        parentVal[splittedKey[1]] = data[key];
-        updatedObject.set(parentProp, parentVal);
-      }
+      updatedObject.set(key, data[key]);
       delete data[key];
     }
     return data;