Loopback inserts object id values as sequence and not random - how can i change it?

Question

Loopback inserts object id values for my MongoDB as sequence and not random. for security reason, how can i change it to be random by default for all my models?

Will it affect the DB performance?

Answer 1

You can change the way the ID is generated in the description file of your model: https://loopback.io/doc/en/lb3/Model-definition-JSON-file.html#properties

model.json:

{
  "name": "model",
  "base": "PersistedModel",
  "strict": true,
  "idInjection": false, // disable default id!
  "properties": {
    "id": {
      "id": true,
      "required": true,
      "type": "string",
      "defaultFn": "uuid"   // "guid" / "uuid" / "uuidv4" / "now"
    },
  },
  "validations": [],
  "relations": {},
  "acls": [],
  "methods": {}
}