Mongodb - Updating Only $ref From Dbref Field Type

I need to update a field of multiple collection documents. The field is a DBRef and I just need to change the $ref field value. One of the documents is like this: { '_id' : { '$oi

Solution 1:

You can use dot notation in order to update the nested document. Note that, whenever the dot notation is used, it should be put between quotes.

db.collection.update(
   {}, 
   { $set:{
       "codeId.$ref":"code"
     }
   },
   false,
   true
);

You can read more about Database References.