grantRolesToRole¶

Definition定义¶

grantRolesToRole¶

Grants roles to a user-defined role.

The grantRolesToRole command affects roles on the database where the command runs. grantRolesToRole has the following syntax:语法如下所示：

{ grantRolesToRole: "<role>",
  roles: [
             { role: "<role>", db: "<database>" },
             ...
         ],
  writeConcern: { <write concern> },
  comment: <any>
}

The grantRolesToRole command has the following fields:

Field字段	Type类型	Description描述
grantRolesToRole	string	The name of a role to add subsidiary roles.
roles	array	An array of roles from which to inherit.
writeConcern	document	Optional.可选。The level of write concern for the modification. The writeConcern document takes the same fields as the getLastError command.
comment	any	Optional.可选。A user-provided comment to attach to this command. Once set, this comment appears alongside records of this command in the following locations: mongod log messages, in the attr.command.cursor.comment field. Database profiler output, in the command.comment field. currentOp output, in the command.comment field. A comment can be any valid BSON type (string, integer, object, array, etc). New in version 4.4.版本4.4中的新功能。

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 grantRolesToRole 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.

Behavior行为¶

A role can inherit privileges from other roles in its database. A role created on the admin database can inherit privileges from roles in any database.

Required Access¶

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

Example示例¶

The following grantRolesToRole command updates the productsReaderWriter role in the products database to inherit the privileges of the productsReader role in the products database:

use products
db.runCommand(
   { grantRolesToRole: "productsReaderWriter",
     roles: [
              "productsReader"
     ],
     writeConcern: { w: "majority" , wtimeout: 5000 }
   }
)