Mongo documentation

Modifies an existing document or documents in a collection. The method can modify specific fields of an existing document or documents or replace an existing document entirely, depending on the update parameter. By default, the update() method updates a single document. Set the multi option to update all documents that match the query criteria.


  1. query (String|ObjectId|Object)

  2. update (Object): Update operations to be performed on the document

  3. [options] (Object)

  4. [callback] (function)


A promise.


users.update({name: 'foo'}, {name: 'bar'})

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