Setting nested fields to objects

[mstniy]

New Issue Checklist

• I am not disclosing a vulnerability.
• I am not just asking a question.
• I have searched through existing issues.
• I can reproduce the issue with the latest versions of Parse Server and the Parse JS SDK.

Issue Description

Setting nested fields to objects currently does not work.

Steps to reproduce

1. Create a new Parse object with an empty Object field, called data.

const o = new Parse.Object('Person');
o.set('data', {});

2. Save the object to create it

await o.save();

3. Set data.a to the empty object, {}

o.set('data.a', {});

4. Save the object to update it

await o.save();

5. Use Parse.Object.get('data') to read the value back

Actual Outcome

The call to .get('data') returns {} , effectively ignoring the update.

Expected Outcome

The call to .get('data') should return {a:{}}

Environment

Server

• Parse Server version: master, as of 13th of May
• Operating system: Ubuntu 20.04
• Local or remote host (AWS, Azure, Google Cloud, Heroku, Digital Ocean, etc): local

Database

• System (MongoDB or Postgres): MongoDB
• Database version: v4.4.5
• Local or remote host (MongoDB Atlas, mLab, AWS, Azure, Google Cloud, etc): local

Client

• Parse JS SDK version: master, as of 13th of May

Logs

[mstniy]

Relevant pull requests: #729, #1301

Note that none of the tests added by these pull requests test the scenario where a non-existent nested field is set to an object.

[dplewis]

@mstniy Since you are looking into nested objects can help out with this issue #1343

[dplewis]

Closing via #1364

[mstniy]

@mstniy Since you are looking into nested objects can help out with this issue #1343

Let's see