How to insert new object without deleting previous one

问题

I'm setting up my new RocketChat Server.

The problem is that actually, Rocket Chat doesn't support CAS Account if they are not created by CAS.

We have old accounts.

I can add the CAS feature by doing this :

Enter in the MongoDB Database with MongoDB Compass software on Windows, and add cas object in services object with my keyboard...

https://i.imgur.com/AIMAlA6.png

So as you can see I can add the CAS feature by doing this.

I want to do that with code so I did this :

1 - Enter in rocketchat_mongo docker

2 - Connect with admin login and use rocketchat database

3 - Execute this code

db.users.update({"name":"Fabien Rousseau"},{ $set: {"services" : { "cas" : { "external_id" : "fabien.rousseau", "version" : 2 }}}})

The command is OK because CAS object is added in services, BUT, it delete the other object like password and resume...

I just want to add CAS object without deleting other objects...

My expected result is in the first image : account with CAS.

Actually after the command I have this :

https://i.imgur.com/vA1i3mx.png

Please help me to tune my command to avoid deleting other objects in my services object.

回答1:

You are passing the whole services (includes all other fields) to $set, and, as a result, you are resetting all the fields nested inside services. Try passing only data you want to update/add to your document using dot notation.
$set documentation says

To specify an field in an embedded document or in an array, use dot notation.

db.users.update({"name":"Fabien Rousseau"},{ $set: { "services.cas" : { "external_id" : "fabien.rousseau", "version" : 2 }}})

来源：https://stackoverflow.com/questions/55596504/how-to-insert-new-object-without-deleting-previous-one