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All updates to an object field except for the last one are ignored #1450

@mstniy

Description

@mstniy

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Issue Description

When updating multiple nested fields under the same object field using ParseObject.set, all updates except for the last one are dropped.

Steps to reproduce

const obj = new Parse.Object("MyObject");
obj.set("a",{});
await obj.save();
obj.set("a.b", 5);
obj.set("a.c", 6);

Actual Outcome

obj.attributes should be {a: {b:5, c:6}}

Expected Outcome

obj.attributes is {a: {c:6}}

Environment

Server

  • Parse Server version: irrelevant
  • Operating system: Ubuntu 20.04
  • Local or remote host (AWS, Azure, Google Cloud, Heroku, Digital Ocean, etc): local, irrelevant

Database

  • System (MongoDB or Postgres): MongoDB
  • Database version: 5.0.6
  • Local or remote host (MongoDB Atlas, mLab, AWS, Azure, Google Cloud, etc): local

Client

  • Parse JS SDK version: alpha (commit d084ac9be058d9b13f8ac2bbf04615f76dc2800d)

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    state:releasedReleased as stable versionstate:released-alphaReleased as alpha versionstate:released-betaReleased as beta versiontype:bugImpaired feature or lacking behavior that is likely assumed

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