Add a new attribute to existing json object in node.s

Question

Add a new attribute to existing json object in node.s

I have an object like this

==================records=========={ Id: 5114a3c21203e0d811000088,
  userId: 'test',
  sUserId: test,
  userName: 'test',
  url: 'test',
  Title: 'test'
}

I need to add a new field Name : 'test' to the above record, I tried giving records.Name = name, it didn't work.

Helps please

Thanks, Prats

node.js
mongodb
mongoose

Answer 1

I am assuming you are trying to add a property to a returned Mongoose Document to reuse it somewhere else. Documents returned by Mongoose are not JSON objects directly, you'll need to convert them to an object to add properties to them. The following should work:

//... record is a mongoose Document
var r = record.toObject();
r.Name = 'test';
console.log("Record ",r);

Answer 2

Those finding this problem, OP mentioned in a comment below the original question that the solution for this problem is:

records.set('Name', 'test')

This adds a new attribute called Name having value test.

Answer 3

Just use,

var convertedJSON = JSON.parse(JSON.stringify(mongooseReturnedDocument);

and Then,

convertedJSON.newProperty = 'Hello!'

'Hello!' can be anything, a number, a object or JSON Object Literal.

Cheers! :)

Answer 4

If you have loaded this object into records, both records.Name = "test" or records['Name'] = "test" will work. You have either not loaded the object correctly, or are inserting an undefined value into it.

To test: add console.log(records.userId), this should print 'test' to the terminal.

Also add console.log(name). If you get ReferenceError: name is not defined, you obviously cannot do: records.Name = name