zulip/templates/zerver/api/changelog.md

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# Changelog
This page documents changes to the Zulip Server API over time.
The recommended way for a client like the Zulip mobile or desktop apps
that needs to support interaction with a wide range of different Zulip
server versions is to check the `zulip_feature_level` parameter in the
`/register` and `/server_settings` responses to determine which of the
below features are supported.
## Changes in Zulip 3.0
markdown: Remove !avatar() and !gravatar() syntax. This particular commit has been a long time coming. For reference, !avatar(email) was an undocumented syntax that simply rendered an inline 50px avatar for a user in a message, essentially allowing you to create a user pill like: `!avatar(alice@example.com) Alice: hey!` --- Reimplementation If we decide to reimplement this or a similar feature in the future, we could use something like `<avatar:userid>` syntax which is more in line with creating links in markdown. Even then, it would not be a good idea to add this instead of supporting inline images directly. Since any usecases of such a syntax are in automation, we do not need to make it userfriendly and something like the following is a better implementation that doesn't need a custom syntax: `![avatar for Alice](/avatar/1234?s=50) Alice: hey!` --- History We initially added this syntax back in 2012 and it was 'deprecated' from the get go. Here's what the original commit had to say about the new syntax: > We'll use this internally for the commit bot. We might eventually > disable it for external users. We eventually did start using this for our github integrations in 2013 but since then, those integrations have been neglected in favor of our GitHub webhooks which do not use this syntax. When we copied `!gravatar` to add the `!avatar` syntax, we also noted that we want to deprecate the `!gravatar` syntax entirely - in 2013! Since then, we haven't advertised either of these syntaxes anywhere in our docs, and the only two places where this syntax remains is our game bots that could easily do without these, and the git commit integration that we have deprecated anyway. We do not have any evidence of someone asking about this syntax on chat.zulip.org when developing an integration and rightfully so- only the people who work on Zulip (and specifically, markdown) are likely to stumble upon it and try it out. This is also the only peice of code due to which we had to look up emails -> userid mapping in our backend markdown. By removing this, we entirely remove the backend markdown's dependency on user emails to render messages. --- Relevant commits: - Oct 2012, Initial commit c31462c2782a33886e737cf33424a36a95c81f97 - Nov 2013, Update commit bot 968c393826f8846065c5c880427328f6e534c2f5 - Nov 2013, Add avatar syntax 761c0a0266669aca82d134716a4d6b6e33d541fc - Sep 2017, Avoid email use c3032a7fe8ed49b011e0d242f4b8a7d756b9f647 - Apr 2019, Remove from webhook 674fcfcce1fcf35bdc57031a1025ef169d495d36
2020-07-06 23:01:38 +02:00
**Feature level 24**
* The `!avatar()` and `!gravatar()` markdown syntax, which was never
documented and rarely used, was removed.
**Feature level 23**
* `GET/PUT/POST /users/me/pointer`: Eliminated. We eliminated
the whole concept of the "global" user pointer leading up to
this commit.
**Feature level 22**
* `GET /attachments`: The date when a message using the attachment was
sent is now correctly encoded as `date_sent`, replacing the
confusingly named `name` field. The `date_sent` and `create_time`
fields of attachment objects are now encoded as integers;
(previously the implementation could send floats incorrectly
suggesting that microsecond precision is relevant).
* `GET /invites`: Now encodes the user ID of the person who created
the invitation as `invited_by_user_id`, replacing the previous
`ref` field (which had that user's Zulip display email address).
**Feature level 21**
* `PATCH /settings/display`: Replaced the `night_mode` boolean with
`color_scheme` as part of supporting automatic night theme detection.
**Feature level 20**
* Added support for inviting users as organization owners to the
invitation endpoints.
**Feature level 19**
* [`GET /events`](/api/get-events): `subscriptions` event with
`op="peer_add"` and `op="peer_remove"` now identify the modified
stream by a `stream_id` field, replacing the old `name` field.
**Feature level 18**
* [`POST /register`](/api/register-queue): Added
`user_avatar_url_field_optional` to supported `client_capabilities`.
**Feature level 17**
* [`GET users/me/subscriptions`](/api/get-subscriptions),
[`GET /streams`](/api/get-streams): Added
`message_retention_days` to Stream objects.
* [`POST users/me/subscriptions`](/api/subscribe), [`PATCH
streams/{stream_id}`](/api/update-stream): Added `message_retention_days`
parameter.
**Feature level 16**
* [`GET /users/me`]: Removed `pointer` from the response, as the
"pointer" concept is being removed in Zulip.
* Changed the rendered HTML markup for mentioning a time to use the
`<time>` HTML tag. It is OK for clients to ignore the previous time
mention markup, as the feature was not advertised before this change.
**Feature level 15**
* Added [spoilers](/help/format-your-message-using-markdown#spoilers)
to supported markdown features.
**Feature level 14**
* [`GET users/me/subscriptions`](/api/get-subscriptions): Removed
the `is_old_stream` field from Stream objects. This field was
always equivalent to `stream_weekly_traffic != null` on the same object.
**Feature level 13**
* [`POST /register`](/api/register-queue): Added
`bulk_message_deletion` to supported `client_capabilities`.
* [`GET /events`](/api/get-events): `message_deleted`
events have new behavior. The `sender` and `sender_id` fields were
removed, and the `message_id` field was replaced by a `message_ids`
list for clients with the `bulk_message_deletion` client capability.
All clients should upgrade; we expect `bulk_message_deletion` to be
required in the future.
**Feature level 12**
* [`GET users/{user_id}/subscriptions/{stream_id}`](/api/get-subscription-status):
New endpoint added for checking if another user is subscribed to a stream.
**Feature level 11**
* [`POST /register`](/api/register-queue): Added
`realm_community_topic_editing_limit_seconds` to the response, the
time limit before community topic editing is forbidden. A `null`
value means no limit.
* [`POST /register`](/api/register-queue): The response now contains a
`is_owner`, similar to the existing `is_admin` and `is_guest` fields.
* [`POST /set-typing-status`](/api/set-typing-status): Removed legacy support for sending email
addresses, rather than user IDs, to encode private message recipients.
**Feature level 10**
* [`GET users/me`](/api/get-own-user): Added `avatar_version`, `is_guest`,
`is_active`, `timezone`, and `date_joined` fields to the User objects.
* [`GET users/me`](/api/get-own-user): Removed `client_id` and `short_name`
from the reponse to this endpoint. These fields had no purpose and
were inconsistent with other API responses describing users.
**Feature level 9**
* [`POST users/me/subscriptions`](/api/subscribe), [`DELETE
/users/me/subscriptions`](/api/unsubscribe): Other users to
subscribe/unsubscribe, declared in the `principals` parameter, can
now be referenced by user_id, rather than Zulip display email
address.
* [PATCH /messages/{message_id}](/api/update-message): Added
`send_notification_to_old_thread` and
`send_notification_to_new_thread` optional parameters.
**Feature level 8**
* [`GET /users`](/api/get-users), [`GET /users/{user_id}`](/api/get-user)
and [`GET /users/me`](/api/get-own-user): User objects now contain the
`is_owner` field as well.
* Added [time mentions](/help/format-your-message-using-markdown#mention-a-time)
to supported markdown features.
**Feature level 7**
* [`GET /events`](/api/get-events): `realm_user` and
`realm_bot` events no longer contain an `email` field to identify
the user; use the `user_id` field instead. Previously, some (but
not all) events of these types contained an `email` key in addition to
to `user_id`) for identifying the modified user.
* [`PATCH /users/{user_id}`](/api/update-user): The `is_admin` and
`is_guest` parameters were removed in favor of the more general
`role` parameter for specifying a change in user role.
* [`GET /events`](/api/get-events): `realm_user` events
sent when a user's role changes now include `role` property, instead
of the previous `is_guest` or `is_admin` booleans.
* `GET /realm/emoji`: The user who uploaded a given custom emoji is
now indicated by an `author_id` field, replacing a previous `author`
object with unnecessary additional data.
**Feature level 6**
* [`GET /events`](/api/get-events): `realm_user` events to
update a user's avatar now include the `avatar_version` field, which
is important for correctly refetching medium-size avatar images when
the user's avatar changes.
* [`GET /users`](/api/get-users) and [`GET
/users/{user_id}`](/api/get-user): User objects now contain the
`avatar_version` field as well.
**Feature level 5**
* [`GET /events`](/api/get-events): `realm_bot` events,
sent when changes are made to bot users, now contain an
integer-format `owner_id` field, replacing the `owner` field (which
was an email address).
**Feature level 4**
* `jitsi_server_url`, `development_environment`, `server_generation`,
`password_min_length`, `password_min_guesses`, `max_file_upload_size_mib`,
`max_avatar_file_size_mib`, `server_inline_image_preview`,
`server_inline_url_embed_preview`, `server_avatar_changes_disabled` and
`server_name_changes_disabled` fields are now available via
`POST /register` to make them accessible to all the clients;
they were only internally available to Zulip's web app prior to this.
**Feature level 3**:
* `zulip_version` and `zulip_feature_level` are always returned
in `POST /register`; previously they were only returned if `event_types`
included `zulip_version`.
* Added new `presence_enabled` user notification setting; previously
[presence](/help/status-and-availability) was always enabled.
**Feature level 2**:
* [`POST /messages/{message_id}/reactions`](/api/add-reaction):
The `reaction_type` parameter is optional; the server will guess the
`reaction_type` if it is not specified (checking custom emoji, then
unicode emoji for any with the provided name).
* `reactions` objects returned by the API (both in `GET /messages` and
in `GET /events`) now include the user who reacted in a top-level
`user_id` field. The legacy `user` dictionary (which had
inconsistent format between those two endpoints) is deprecated.
**Feature level 1**:
* [`GET /server_settings`](/api/get-server-settings): Added
`zulip_feature_level`, which can be used by clients to detect which
of the features described in this changelog are supported.
* [`POST /register`](/api/register-queue): Added `zulip_feature_level`
to the response if `zulip_version` is among the requested
`event_types`.
* [`GET /users`](/api/get-users): User objects for bots now
contain a `bot_owner_id`, replacing the previous `bot_owner` field
(which had the email address of the bot owner).
* [`GET /users/{user_id}`](/api/get-user): Endpoint added.
* [`GET /messages`](/api/get-messages): Add support for string-format
values for the `anchor` parameter, deprecating and replacing the
`use_first_unread_anchor` parameter.
* [`GET /messages`](/api/get-messages) and [`GET
/events`](/api/get-events): Message objects now use
`topic_links` rather than `subject_links` to indicate links either
present in the topic or generated by Linkifiers applied to the topic.
* [`POST /users/me/subscriptions`](/api/subscribe): Replaced
`is_announcement_only` boolean with `stream_post_policy` enum for
specifying who can post to a stream.
* [`PATCH /streams/{stream_id}`](/api/update-stream): Replaced
`is_announcement_only` boolean with `stream_post_policy` enum for
specifying who can post to a stream.
* [`GET /streams`](/api/get-streams): Replaced
`is_announcement_only` boolean with `stream_post_policy` enum for
specifying who can post to a stream.
* `GET /api/v1/user_uploads`: Added new endpoint for requesting a
temporary URL for an uploaded file that does not require
authentication to access (e.g. for passing from a Zulip desktop,
mobile, or terminal app to the user's default browser).
* Added `EMAIL_ADDRESS_VISIBILITY_NOBODY` possible value for
`email_address_visibility`.
* Added `private_message_policy` realm setting.
* `muted_topic` objects now are a 3-item tuple: (`stream_id`, `topic`,
`date_muted`). Previously, they were a 2-item tuple.
* `GitLab` authentication is now available.
* Added `None` as a video call provider option.
## Changes in Zulip 2.1
* [`GET /users`](/api/get-users): Added `include_custom_profile_fields`
to request custom profile field data.
* [`GET /users/me`](/api/get-own-user): Added `avatar_url` field,
containing the user's avatar URL, to the response.
* [`GET /users/me/subscriptions`](/api/get-subscriptions): Added
`include_subscribers` parameter controlling whether data on the
other subscribers is included. Previous behavior was to always send
subscriber data.
* [`GET /users/me/subscriptions`](/api/get-subscriptions):
Stream-level notification settings like `push_notifications` were
changed to be nullable boolean fields (true/false/null), with `null`
meaning that the stream inherits the organization-level default.
Previously, the only values were true/false. A client communicates
support for this feature using `client_capabilities`.
* [`GET /users/me/subscriptions`](/api/get-subscriptions): Added
`wildcard_mentions_notify` notification setting, with the same
global-plus-stream-level-override model as other notification settings.
* [`GET /server_settings`](/api/get-server-settings): Added
`external_authentication_methods` structure, used to display login
buttons nicely in the mobile apps.
* Added `first_message_id` field to Stream objects. This is helpful
for determining whether the stream has any messages older than a
window cached in a client.
* Added `is_web_public` field to Stream objects. This field is
intended to support web-public streams.
* Added `/export/realm` endpoints for triggering a data export.
* `PATCH /realm`: Added `invite_to_stream_policy`,
`create_stream_policy`, `digest_emails_enabled`, `digest_weekday`,
`user_group_edit_policy`, and `avatar_changes_disabled` organization settings.
* Added `fluid_layout_width`, `desktop_icon_count_display`, and
`demote_inactive_streams` display settings.
* `enable_stream_sounds` was renamed to
`enable_stream_audible_notifications`.
* Deprecated `is_home_view`, replacing it with the more readable
`is_muted` (with the opposite meaning).
* Custom profile fields: Added `EXTERNAL_ACCOUNT` field type.
## Changes in Zulip 2.0
* [`POST /messages`](/api/send-message): Added support for using user
IDs and stream IDs for specifying the recipients of a message.
* [`POST /messages`](/api/send-message), [`POST
/messages/{message_id}`](/api/update-message): Added support for
encoding topics using the `topic` parameter name. The previous
`subject` parameter name was deprecated but is still supported for
backwards-compatibility.
* [`POST /set-typing-status`](/api/set-typing-status): Added support for specifying the
recipients with user IDs, deprecating the original API of specifying
them using email addresses.
------------------
## Changes not yet stabilized
* [`POST /register`](/api/register-queue): Added `slim_presence`
parameter. Changes the format of presence events, but is still
being changed and should not be used by clients.
* `message_retention_days` field in stream objects.