db.grantRolesToUser()

Definition

db.grantRolesToUser(username, roles, writeConcern)

Grants additional roles to a user.

Important

mongosh Method

This page documents a mongosh method. This is not the documentation for database commands or language-specific drivers, such as Node.js.

For the database command, see the grantRolesToUser command.

For MongoDB API drivers, refer to the language-specific MongoDB driver documentation.

The db.grantRolesToUser() method uses the following syntax:

db.grantRolesToUser( "<username>", [ <roles> ], { <writeConcern> } )

The db.grantRolesToUser() method takes the following arguments:

Parameter	Type	Description
user	string	The name of the user to whom to grant roles.
roles	array	An array of additional roles to grant to the user.
writeConcern	document	Optional. The level of write concern for the operation. See Write Concern Specification.

In the roles field, you can specify both built-in roles and user-defined roles.

To specify a role that exists in the same database where db.grantRolesToUser() runs, you can either specify the role with the name of the role:

"readWrite"

Or you can specify the role with a document, as in:

{ role: "<role>", db: "<database>" }

To specify a role that exists in a different database, specify the role with a document.

The db.grantRolesToUser() method wraps the grantRolesToUser command.

Compatibility

This method is available in deployments hosted in the following environments:

• MongoDB Enterprise: The subscription-based, self-managed version of MongoDB

• MongoDB Community: The source-available, free-to-use, and self-managed version of MongoDB

Behavior

Required Access

You must have the grantRole action on a database to grant a role on that database.

Example

Given a user accountUser01 in the products database with the following roles:

"roles" : [
    { "role" : "assetsReader",
      "db" : "assets"
    }
]

The following db.grantRolesToUser() operation gives accountUser01 the readWrite role on the products database and the read role on the stock database.

use products
db.grantRolesToUser(
   "accountUser01",
   [ "readWrite" , { role: "read", db: "stock" } ],
   { w: "majority" , wtimeout: 4000 }
)

The user accountUser01 in the products database now has the following roles:

"roles" : [
    { "role" : "assetsReader",
      "db" : "assets"
    },
    { "role" : "read",
      "db" : "stock"
    },
    { "role" : "readWrite",
      "db" : "products"
    }
]