# Group Groups

Groups are collections of users. They support assigning/unassigning multiple users to/from a project in one operation.

This resource is currently a stub.

## Actions

None

## Linked Properties
|  Link       | Description                                                                                                                                                           | Type              | Constraints           | Supported operations | Condition                                                     |
|:-----------:|--------------------------------------------------------------                                                                                                         | -------------     | --------------------- | -------------------- | -----------------------------------------                     |
| self        | This group                                                                                                                                                            | Group             | not null              | READ                 |                                                               |
| members     | Link ot collection of all the group's memberships. The list will only include the memberships in projects in which the requesting user has the necessary permissions. | MemberCollection  |                       | READ                 | **Permission**: view members or manage members in any project |

## Local Properties
| Property     | Description                                                | Type     | Constraints                                          | Supported operations | Condition                                                                           |
| :----------: | ---------------------------------------------------------  | -------- | ---------------------------------------------------- | -------------------- | -----------------------------------------------------------                         |
| id           | Group's id                                                 | Integer  | x > 0                                                | READ                 |                                                                                     |
| name         | Group's full name, formatting depends on instance settings | String   |                                                      | READ                 |                                                                                     |
| createdAt    | Time of creation                                           | DateTime |                                                      | READ                 |                                                                                     |
| updatedAt    | Time of the most recent change to the user                 | DateTime |                                                      | READ                 |                                                                                     |

## Group [/api/v3/groups/{id}]

+ Model
    + Body

            {
                "_type": "Group",
                "id": 9,
                "name": "The group",
                "createdAt": "2015-09-23T11:06:36Z",
                "updatedAt": "2015-09-23T11:06:36Z",
                "_links": {
                    "self": {
                        "href": "/api/v3/groups/9",
                        "title": "The group"
                    }
                }
            }

## View group [GET]

+ Parameters
    + id (required, integer, `1`) ... Group id.

+ Response 200 (application/hal+json)

    [Group][]

+ Response 404 (application/hal+json)

    Returned if the group does not exist or if the API user does not have permission to view them.

    **Required permission** If the user has the *manage members* permission in at least one project the user will be able to query all groups. If not, the user
    will be able to query all groups which are members in projects, he has the *view members* permission in.

    + Body

            {
                "_type": "Error",
                "errorIdentifier": "urn:openproject-org:api:v3:errors:NotFound",
                "message": "The requested resource could not be found."
            }