# Group UserPreferences

## Linked Properties
|  Link     | Description                                              | Type           | Constraints           | Supported operations |
|:---------:|----------------------------------------------------------| -------------- | --------------------- | -------------------- |
| self      | This UserPreferences                                     | UserPreferences| not null              | READ                 |
| user      | The user that this preference belongs to                 | User           | not null              | READ                 |

## Local Properties
| Property               | Description                                                | Type       | Constraints | Supported operations |
|:----------------------:| -----------------------------------------------------------| ---------- | ----------- | -------------------- |
| hideMail               | Hide mail address from other users                         | Boolean    |             | READ / WRITE         |
| timeZone               | Current selected time zone                                 | String     |             | READ / WRITE         |
| commentSortDescending  | Sort comments in descending order                          | Boolean    |             | READ / WRITE         |
| warnOnLeavingUnsaved   | Issue warning when leaving a page with unsaved text        | Boolean    |             | READ / WRITE         |
| accessibilityMode      | Enable accessibility mode                                  | Boolean    |             | READ / WRITE         |

## UserPreferences [/api/v3/my_preferences]

+ Model
    + Body

            {
                "_type" : "UserPreferences",
                "_links" : {
                    "self" : {
                        "href" : "/api/v3/my_preferences",
                    },
                    "user": {
                        "href": "/api/v3/users/1",
                        "title": "John Sheppard"
                    }
                },
                "hideMail" : false,
                "timeZone" : "Europe/Berlin",
                "commentSortDescending" : true,
                "warnOnLeavingUnsaved" : true,
                "accessibilityMode" : false
            }


## Show my preferences [GET]

+ Response 200 (application/hal+json)

    [UserPreferences][]

+ Response 401 (application/hal+json)

    Returned if no user is currently authenticated

    + Body

            {
                "_type": "Error",
                "errorIdentifier": "urn:openproject-org:api:v3:errors:Unauthenticated",
                "message": "You need to be authenticated to access this resource."
            }

## Update UserPreferences [PATCH]

When calling this endpoint the client provides a single object, containing the properties that it wants to change, in the body.

+ Request (application/json)

        {
            "accessibilityMode": true,
            "timeZone": "Europe/Paris"
        }

+ Response 200 (application/hal+json)

    [UserPreferences][]

+ Response 400 (application/hal+json)

    Occurs when the client did not send a valid JSON object in the request body.

    + Body

            {
                "_type": "Error",
                "errorIdentifier": "urn:openproject-org:api:v3:errors:InvalidRequestBody",
                "message": "The request body was not a single JSON object."
            }

+ Response 401 (application/hal+json)

    Returned if no user is currently authenticated

    + Body

            {
                "_type": "Error",
                "errorIdentifier": "urn:openproject-org:api:v3:errors:Unauthenticated",
                "message": "You need to be authenticated to access this resource."
            }

+ Response 422 (application/hal+json)

    Returned if the update contains invalid properties.
    Reasons are:
    * Specifying an invalid type
    * Using an unknown time zone

    + Body

            {
                "_type": "Error",
                "errorIdentifier": "urn:openproject-org:api:v3:errors:PropertyConstraintViolation",
                "message": "Time zone is not set to one of the allowed values."
            }