A new setting attribute is used to define the areas (separated by `|`).
In addition, endpoint `/admin/config/site_settings.json` accepts new `filter_area` data.
This change introduces a new thread notification level allowing users to get notified when someone replies to the thread.
Users who watch a thread will get a green notification on the chat icon and a user notification (blue). User notifications are consolidated based on thread id to prevent cluttering the original users notification area.
---------
Co-authored-by: Régis Hanol <regis@hanol.fr>
We're seeing a lot of log noise coming from unhandled exceptions stemming from requests to TopicsController#show where id is passed in as an array.
In the implementation of the method, we assume that if id is present it will be a string. This is because one of the routes to this action uses :id as a URL fragment, and so must be a string. However, there are other routes that go to this endpoint as well. Some of them don't have this URL fragment, so you can pass an arbitrary id query parameter.
Instead of a downstream unhandled exception, we raise a Discourse::InvalidParameters upfront.
Follow-up to e3ae57ea7a
The previous commit added an `after_create` callback that triggers a refresh for the user directory whenever a `User` record is created. Theoretically, this approach should work, however, there's a gotcha in practice, because during a real user registration, when the `User` record is created in the database, it's not marked as active until the user verifies their email address and the user directory excludes inactive users, so the initial directory refresh triggered by the `after_create` callback becomes pointless.
To make a new user appear in the user directory immediately after sign up, we need to trigger a refresh via an `after_save` callback when they verify their email address and become active.
When searching for site texts for admin using the english
version of the text, previously we would show the english
version in the results _even if_ there was another locale
translated version available when a locale was selected
from the dropdown.
This commit adds a "Only show results in selected locale"
checkbox option which will instead make it so the results
shown are in the target locale, making it easier for translators
to tell when there is actually translations vs. missing tranlsations.
This commit improves `TopicsController#show` to not load suggested and
related topics unless it is the last page of the topic's view.
Previously, we avoided loading suggested and related topics by the use
of conditionals in the `TopicViewSerializer` to avoid calling
`TopicView#suggested_topics` and `TopicView#related_topics`. However,
this pattern is not reliable as the methods can still be called from
other spots in the code base. Instead, we ensure that
`TopicView#include_suggested` and `TopicView#include_related` is set
correctly on the instance of `TopicView` which ensures that for the
given instance, `TopicView#suggested_topics` and
`TopicView#related_topics` will be a noop.
This commit moves the business logic in the `Admin::UsersController#suspend` and `Admin::UsersController#silence` actions to dedicated service classes. There's no functional changes in this commit.
Internal topic: t/130014.
This commit fixes a bug where the silence button is incorrectly displayed on the admin page of a staff user. It's not actually possible to silence a staff user because the backend correctly prevents it, but the frontend isn't checking if the button should be displayed.
Another small bug that this commit fixes is the similar users list not showing up inside the silence/suspend modals due to also a bug in the frontend.
I've also changed the way similar users are loaded so that they're not returned by the `admin/users#show` endpoint anymore and moved them into a new endpoint that the penalize modals (suspend and silence) can call directly to retrieve the list of users. This is done because the similar users list is never shown on the admin user page (`/admin/users/:user_id/:username`); they're only needed when the suspend or silence modals are opened.
Internal topic: t/130014.
* System user attachment size WIP
* spec check
* controller update
* add max to system_user_max_attachment_size_kb
* DEV: update to use static method for `max_attachment_size_for_user`
add test to use large image.
add check for failure.
* DEV: update `system_user_max_attachment_size_kb` default value to 0
remove unecessary test.
update tests to reflect the new default value of `system_user_max_attachment_size_kb`
* DEV: update maximum_file_size to check when is an attachment made by a system user
Add tests for when `system_user_max_attachment_size_kb` is over and under the limit
Add test for checking interaction with `max_attachment_size_kb`
* DEV: move `max_attachment_size_for_user` to private methods
* DEV: turn `max_attachment_size_for_user` into a static method
* DEV: typo in test case
* DEV: move max_attachment_size_for_user to private class method
* Revert "DEV: move max_attachment_size_for_user to private class method"
This reverts commit 5d5ae0b715.
---------
Co-authored-by: Gabriel Grubba <gabriel@discourse.org>
We used to show New Features in a tab on the dashboard,
but this could get pushed down the page especially on
our hosting. In 043117ca13
we made a separate What's New page, so this commit removes
the dashboard tab and changes the admin notification to
send the admin to /admin/whats-new instead of the dashboard
tab.
### Why?
Before, all flags were static. Therefore, they were stored in class variables and serialized by SiteSerializer. Recently, we added an option for admins to add their own flags or disable existing flags. Therefore, the class variable had to be dropped because it was unsafe for a multisite environment. However, it started causing performance problems.
### Solution
When a new Flag system is used, instead of using PostActionType, we can serialize Flags and use fragment cache for performance reasons.
At the same time, we are still supporting deprecated `replace_flags` API call. When it is used, we fall back to the old solution and the admin cannot add custom flags. In a couple of months, we will be able to drop that API function and clean that code properly. However, because it may still be used, redis cache was introduced to improve performance.
To test backward compatibility you can add this code to any plugin
```ruby
replace_flags do |flag_settings|
flag_settings.add(
4,
:inappropriate,
topic_type: true,
notify_type: true,
auto_action_type: true,
)
flag_settings.add(1001, :trolling, topic_type: true, notify_type: true, auto_action_type: true)
end
```
### Why?
Before, all flags were static. Therefore, they were stored in class variables and serialized by SiteSerializer. Recently, we added an option for admins to add their own flags or disable existing flags. Therefore, the class variable had to be dropped because it was unsafe for a multisite environment. However, it started causing performance problems.
### Solution
When a new Flag system is used, instead of using PostActionType, we can serialize Flags and use fragment cache for performance reasons.
At the same time, we are still supporting deprecated `replace_flags` API call. When it is used, we fall back to the old solution and the admin cannot add custom flags. In a couple of months, we will be able to drop that API function and clean that code properly. However, because it may still be used, redis cache was introduced to improve performance.
To test backward compatibility you can add this code to any plugin
```ruby
replace_flags do |flag_settings|
flag_settings.add(
4,
:inappropriate,
topic_type: true,
notify_type: true,
auto_action_type: true,
)
flag_settings.add(1001, :trolling, topic_type: true, notify_type: true, auto_action_type: true)
end
```
Adds a new statistics (hidden from the UI, but available via the API) that tracks daily participating users.
A user is considered as "participating" if they have
- Reacted to a post
- Replied to a topic
- Created a new topic
- Created a new PM
- Sent a chat message
- Reacted to a chat message
Internal ref - t/131013
Currently, in the list controller, when encountering an unsafe redirect
error, a 404 is rendered. The problem is that it’s done in a way that it
also logs a fatal error (because a `Discourse::NotFound` exception was
raised inside a `rescue_from` block).
This patch addresses that issue by simply rendering a 404 without
raising any error.
Currently, when a badly named category slug is provided, it can lead to
an infinite redirect.
This patch addresses the issue by properly unescaping `request.fullpath`
so the path is successfully rewritten and the redirect happens as
expected.
This commit patches `Net::HTTP` to reduce the default timeouts of 60
seconds when we are processing a request. There are certain routes in
Discourse which makes external requests and if the proper timeouts are
not set, we risk having the Unicorn master process force restarting the
Unicorn workers once the `30` seconds timeout is reached. This can
potentially become a vector for DoS attacks and this commit is aimed at
reducing the risk here.
In the formkit conversion in 2ca06ba236
we missed setting a type for the UppyImageUploader for badges. Also,
we were not passing down the `image_url` as form data, so when we used
`data.image` for that field the badge was not updating in the UI after
page loads and the image URL was not loading for preview.
Co-authored-by: Joffrey JAFFEUX <j.jaffeux@gmail.com>
Before this commit, running `rspec --seed 22953 --format documentation spec/requests/admin/site_texts_controller_spec.rb:191 spec/lib/freedom_patches/translate_accelerator_spec.rb:109` will fail.
Setting `I18n.config.available_locales` is equivalent to hard coding the
locales for the entire process. It should not be set so that `I18n` will
fallback to `backend.locales`.
When creating a shared draft, we're recording topic view stats on the draft and then pass those on when the draft is published, conflating the actual view count.
This fixes that by not registering topic views if the topic is a shared draft.
Followup 4aea12fdcb
In certain config areas (like About) we want to be able
to fetch specific site settings by name. In this case,
sometimes we need to be able to fetch hidden settings,
in cases where a config area is still experimental.
Splitting out a different endpoint for this purpose
allows us to be stricter with what we return for config
areas without affecting the main site settings UI, revealing
hidden settings before they are ready.
We have a dedicated admin page (`/admin/customize/email_templates`) that lets admins customize all emails that Discourse sends to users. The way this page works is that it lists all translations strings that are used for emails, and the list of translation strings is currently hardcoded and hasn't been updated in years. We've had a number of new emails that Discourse sends, so we should add those templates to the list to let admins easily customize those templates.
Meta topic: https://meta.discourse.org/t/3-2-x-still-ignores-some-custom-email-templates/308203.
Followup e954eb234e
Adds a test for the defer_track_view method on topic controller
to check that the early returns (nexts) work correctly
without errors.
Previously in these 2 PRs, we introduced a new site setting `SiteSetting.enforce_second_factor_on_external_auth`.
https://github.com/discourse/discourse/pull/27547https://github.com/discourse/discourse/pull/27674
When disabled, it should enforce 2FA for local login with username and password and skip the requirement when authenticating with oauth2.
We stored information about the login method in a secure session but it is not reliable. Therefore, information about the login method is moved to the database.
* FEATURE: Clean up previously logged information after permanently deleting posts
When soft deleteing a topic or post, we will log some details in the
staff log, including the raw content of the post. Before this commit, we
will not clear the information in these records. Therefore, after
permanently deleting the post, `UserHistory` still retains copy of the
permanently deleted post. This is an unexpected behaviour and may raise
some potential legal issues.
This commit adds a behavior that when a post is permanently deleted, the
details column of the `UserHistory` associated with the post will be
overwritten to "(permanently deleted)". At the same time, for permanent
deletion, a new `action_id` is introduced to distinguish it from soft
deletion.
Related meta topic: https://meta.discourse.org/t/introduce-a-way-to-also-permanently-delete-the-sensitive-info-from-the-staff-logs/292546
* FEATURE: Add logging for CustomEmoji
We didn't provide any logs for CustomEmoji before, nor did we record the
person who added any emoji in the database. As a result, the staff had
no way to trace back who added a certain emoji.
This commit adds a new column `user_id` to `custom_emojis` to record the
creator of an emoji. At the same time, a log is added for staff logs to
record who added or deleted a custom emoji.
Our old group SMTP SSL option was a checkbox,
but this was not ideal because there are actually
3 different ways SSL can be used when sending
SMTP:
* None
* SSL/TLS
* STARTTLS
We got around this before with specific overrides
for Gmail, but it's not flexible enough and now people
want to use other providers. It's best to be clear,
though it is a technical detail. We provide a way
to test the SMTP settings before saving them so there
should be little chance of messing this up.
This commit also converts GroupEmailSettings to a glimmer
component.
Allow admin to create custom flag which requires an additional message.
I decided to rename the old `custom_flag` into `require_message` as it is more descriptive.
Previously, we did not log any topic slow mode changes. This allowed
some malicious (or just careless) TL4 users to delete slow modes created
by moderators at will. Administrators could not see who changed the slow
mode unless they had SQL knowledge and used Data Explorer.
This commit enables logging who turns slow mode on, off, or changes it.
Related meta topic: https://meta.discourse.org/t/why-is-there-no-record-of-who-added-or-removed-slow-mode/316354
This commit updates `TopicQuery.validators` to cover all of the
public options listed in `TopicQuery.public_valid_options`. This is done
to fix the app returning a 500 response code when an invalid value, such
as a hash, is passed as a query param when accessing the various topic
list routes.
Originally in 964da21817
we hid the SMTPAuthenticationError message except in
very specific cases. However this message often contains
helpful information from the mail provider, for example
here is a response from Office365:
> 535 5.7.139 Authentication unsuccessful, user is locked by your
organization's security defaults policy. Contact your administrator.
So, we will show the error message in the modal UI instead
of supressing it with a generic message to be more helpful.
The watch words controller creation function, create_or_update_word(), doesn’t validate the size of the replacement parameter, unlike the word parameter, when creating a replace watched word. So anyone with moderator privileges can create watched words with almost unlimited characters.
This commit updates `StaticController#enter` to not redirect to invalid
paths when the `redirect` param is set. Instead it should redirect to `/` when the
`redirect` param is invalid.
### What is the problem?
We have recently added a new option to add user fields required for existing users. This is in contrast to requiring fields only on sign-up.
This revealed an existing problem. Consider the following:
1. User A signs up.
2. Admin adds a new user field required on sign-up. (Should not apply to User A since they already signed up.)
3. User A tries to update their profile.
**Expected behaviour:**
No problem.
**Actual behaviour:**
User A receives an error saying they didn't fill up all required fields.
### How does this fix it?
When updating profile, we only check that required fields that are "for all users" are filled. Additionally, we check that fields that were required on sign-up and have previously been filled are not blanked out.
Allow admin to create custom flag which requires an additional message.
I decided to rename the old `custom_flag` into `require_message` as it is more descriptive.
This patch upgrades the MessageFormat library to version 3.3.0 from
0.1.5.
Our `I18n.messageFormat` method signature is unchanged, and now uses the
new API under the hood.
We don’t need dedicated locale files for handling pluralization rules
anymore as everything is now included by the library itself.
The compilation of the messages now happens through our
`messageformat-wrapper` gem. It then outputs an ES module that includes
all its needed dependencies.
Most of the changes happen in `JsLocaleHelper` and in the `ExtraLocales`
controller.
A new method called `.output_MF` has been introduced in
`JsLocaleHelper`. It handles all the fetching, compiling and
transpiling to generate the proper MF messages in JS. Overrides and
fallbacks are also handled directly in this method.
The other main change is that now the MF translations are served through
the `ExtraLocales` controller instead of being statically compiled in a
JS file, then having to patch the messages using overrides and
fallbacks. Now the MF translations are just another bundle that is
created on the fly and cached by the client.
Followup 3ff7ce78e7
Basing this setting on referrer was too brittle --
the referrer header can easily be ommitted or changed.
Instead, for the small amount of use cases that this
site setting serves, we can use a group-based setting
instead, changing it to `cross_origin_opener_unsafe_none_groups`
instead.
When a crawler visits a topic that has a deleted author, it would error because the `show.html.erb` view was expecting a user to be always present.
This ensure we don't render the "author" meta data when the author of the topic has been deleted.
Internal ref t/132508
Background:
In order to redrive failed webhook events, an operator has to go through and click on each. This PR is adding a mechanism to retry all failed events to help resolve issues quickly once the underlying failure has been resolved.
What is the change?:
Previously, we had to redeliver each webhook event. This merge is adding a 'Redeliver Failed' button next to the webhook event filter to redeliver all failed events. If there is no failed webhook events to redeliver, 'Redeliver Failed' gets disabled. If you click it, a window pops up to confirm the operator. Failed webhook events will be added to the queue and webhook event list will show the redelivering progress. Every minute, a job will be ran to go through 20 events to redeliver. Every hour, a job will cleanup the redelivering events which have been stored more than 8 hours.
Instead of the deprecated 'min trust level to allow ignore' in order to reduce the number of deprecation notices in the logs.
This tweaks a few serializers so that the 'can_ignore_users?` property is always coming from the server and properly used on the client-side.
SiteSetting.hide_user_profiles_from_public raises a Forbidden, which disallows our after_action: add no index header from triggering.
This fix makes sure that the no index header gets added via before_action instead
Followup 2f2da72747
This commit moves topic view tracking from happening
every time a Topic is requested, which is susceptible
to inflating numbers of views from web crawlers, to
our request tracker middleware.
In this new location, topic views are only tracked when
the following headers are sent:
* HTTP_DISCOURSE_TRACK_VIEW - This is sent on every page navigation when
clicking around the ember app. We count these as browser page views
because we know it comes from the AJAX call in our app. The topic ID
is extracted from HTTP_DISCOURSE_TRACK_VIEW_TOPIC_ID
* HTTP_DISCOURSE_DEFERRED_TRACK_VIEW - Sent when MessageBus initializes
after first loading the page to count the initial page load view. The
topic ID is extracted from HTTP_DISCOURSE_DEFERRED_TRACK_VIEW.
This will bring topic views more in line with the change we
made to page views in the referenced commit and result in
more realistic topic view counts.
By default, secure sessions expire after 1 hour.
For OAuth authentication it should expire at the same time when the authentication cookie expires - `SiteSetting.maximum_session_age.hours`.
It is possible that the forum will not have persistent sessions, based on `persistent_sessions` site setting. In that case, with next username and password authentication we need to reset information about OAuth.
Bug introduced in this PR - https://github.com/discourse/discourse/pull/27547
When bad data is provided in the URI for redirecting to a category,
Rails raises an `ActionController::Redirecting::UnsafeRedirectError`
error, leading to a 500 error.
This patch catches the exception to render a 404 instead.
Currently redirecting to an external URL through a permalink doesn’t
work because Rails raises a
`ActionController::Redirecting::UnsafeRedirectError` error.
This wasn’t the case before we upgraded to Rails 7.0.
This patch fixes the issue by using `allow_other_host: true` on the
redirect.
If, for whatever reasons, the user's locale is "blank" and an admin is accepting their group membership request, there will be an error because we're generating posts with the locale of recipient.
In order to fix this, we now use the `user.effective_locale` which takes care of multiple things, including returning the default locale when the user's locale is blank.
Internal ref - t/132347
We want to allow admins to make new required fields apply to existing users. In order for this to work we need to have a way to make those users fill up the fields on their next page load. This is very similar to how adding a 2FA requirement post-fact works. Users will be redirected to a page where they can fill up the remaining required fields, and until they do that they won't be able to do anything else.
Adds a checkbox to filter untranslated text strings in the admin UI, behind a hidden and default `false` site setting `admin_allow_filter_untranslated_text`.
Followup to 0e1102b332
Minor followup, makes the condition check against the
boolean val, see the difference here:
```ruby
!SiteSetting.enforce_second_factor_on_external_auth && "true"
=> "true"
```
vs:
```ruby
!SiteSetting.enforce_second_factor_on_external_auth && "true" == "true"
=> true
```
* DEV: Upgrade Rails to 7.1
* FIX: Remove references to `Rails.logger.chained`
`Rails.logger.chained` was provided by Logster before Rails 7.1
introduced their broadcast logger. Now all the loggers are added to
`Rails.logger.broadcasts`.
Some code in our initializers was still using `chained` instead of
`broadcasts`.
* DEV: Make parameters optional to all FakeLogger methods
* FIX: Set `override_level` on Logster loggers (#27519)
A followup to f595d599dd
* FIX: Don’t duplicate Rack response
---------
Co-authored-by: Jarek Radosz <jradosz@gmail.com>
* DEV: Upgrade Rails to 7.1
* FIX: Remove references to `Rails.logger.chained`
`Rails.logger.chained` was provided by Logster before Rails 7.1
introduced their broadcast logger. Now all the loggers are added to
`Rails.logger.broadcasts`.
Some code in our initializers was still using `chained` instead of
`broadcasts`.
* DEV: Make parameters optional to all FakeLogger methods
* FIX: Set `override_level` on Logster loggers (#27519)
A followup to f595d599dd
* FIX: Don’t duplicate Rack response
---------
Co-authored-by: Jarek Radosz <jradosz@gmail.com>
In this PR we introduced `enforce_second_factor_on_external_auth` setting https://github.com/discourse/discourse/pull/27506
When it is set to false and the user is authenticated via OAuth, then we should not enforce the 2fa configuration.
Some tooling may rely on an unsafe-none cross origin opener policy to work. This change adds a hidden site setting that can be used to list referrers where we add this header instead of the default one configured in cross_origin_opener_policy_header.
Followup 6b872c4c53
Even though we were showing a validation error for a reject
reason that was too long, we were still sending an email and
doing other operations on the user which we are rejecting.
This commit fixes this by validating the reviewable model
before attempting to do anything else after the reason is set.
A new admin setting called `enforce_second_factor_on_external_auth`. It allows users to authenticate using external providers even when 2FA is forced with `enforce_second_factor` site setting.
* Revert "FIX: Set `override_level` on Logster loggers (#27519)"
This reverts commit c1b0488c54.
* Revert "DEV: Make parameters optional to all FakeLogger methods"
This reverts commit 3318dad7b4.
* Revert "FIX: Remove references to `Rails.logger.chained`"
This reverts commit f595d599dd.
* Revert "DEV: Upgrade Rails to 7.1"
This reverts commit 081b00391e.
* Load search results in displayed order so that when more categories are loaded on scroll, they appear at the end,
* Limit the number of subcategories that are shown per category and display 'show more' links,
This commit adds ability to fetch a subset of site settings from the `/admin/site_settings` endpoint so that it can be used in all places where the client app needs access to a subset of the site settings.
Additionally, this commit also introduces a new service class called `UpdateSiteSetting` that encapsulates all the logic that surrounds updating a site setting so that it can be used to update site setting(s) anywhere in the backend. This service comes in handy with, for example, the controller for the flags admin config area which may need to update some site settings related to flags.
Internal topic: t/130713.
After working on the Webhook events filter by Status, I noticed that the 'Delivered' and 'Failed' options do not take the status param when loading more than fifty Webhook events. It causes to load all Webhook events regardless of its status after the first load.
This PR is adding webhook events status for the filter to the param when loading more than fifty Webhook events.
* FEATURE: Add Filter for Webhook Events by Status
* Fixing multiple issues
* Lint
* Fixing multiple issues
* Change the range of the status for webhook events
This commit fixes a problem where the user will not be able to reset
their password when they only have security keys and backup codes
configured.
This commit also makes the following changes/fixes:
1. Splits password reset system tests to
`spec/system/forgot_password_spec.rb` instead of missing the system
tests in `spec/system/login_spec.rb` which is mainly used to test
the login flow.
2. Fixes a UX issue where the `Use backup codes` or `Use authenticator
app` text is shown on the reset password form when the user does
not have either backup codes or an authenticator app configured.
This makes it more obvious what's happening, and makes it much less likely that users will send repeated reset emails (and thereby hit the rate limit)
Followup to e97ef7e9af
This commit adds the ability for site administrators to mark users'
passwords as expired. Note that this commit does not add any client side
interface to mark a user's password as expired.
The following changes are introduced in this commit:
1. Adds a `user_passwords` table and `UserPassword` model. While the
`user_passwords` table is currently used to only store expired
passwords, it will be used in the future to store a user's current
password as well.
2. Adds a `UserPasswordExpirer.expire_user_password` method which can
be used from the Rails console to mark a user's password as expired.
3. Updates `SessionsController#create` to check that the user's current
password has not been marked as expired after confirming the
password. If the password is determined to be expired based on the
existence of a `UserPassword` record with the `password_expired_at`
column set, we will not log the user in and will display a password
expired notice. A forgot password email is automatically send out to
the user as well.
This commit moves the logic for crawler rate limits out of the application controller and into the request tracker middleware. The reason for this move is to apply rate limits to all crawler requests instead of just the requests that make it to the application controller. Some requests are served early from the middleware stack without reaching the Rails app for performance reasons (e.g. `AnonymousCache`) which results in crawlers getting 200 responses even though they've reached their limits and should be getting 429 responses.
Internal topic: t/128810.
This gives us daily fidelity of topic view stats
New table stores a row per topic viewed per day tracking
anonymous and logged on views
We also have a new endpoint `/t/ID/views-stats.json` to get the statistics for the topic.
We're planning to implement a feature that allows adding required fields for existing users. This PR does some preparatory refactoring to make that possible. There should be no changes to existing behaviour. Just a small update to the admin UI.
This PR introduces a basic AdminNotice model to store these notices. Admin notices are categorized by their source/type (currently only notices from problem check.) They also have a priority.
This PR aims to add bulk actions to the user's bookmarks.
After this feature, all users should be able to select multiple bookmarks and perform the actions of "deleting" or "clear reminders"
Instead of creating two separate Topics when a user (1) requests to join a group and (2) gets accepted in, this makes the acceptance message into a Post under the origin group request Topic.
Note this may have performance issues in some cases, will need to be monitored
Previous to this change we were bracketing on 50 id windows. They may end up
having zero posts we are searching for leading to posts.rss and .json returning
no results.
- avoids Post.last.id which is expensive
- order by id desc which is better cause we bracket on id
AuthProvider#enabled_setting=, used primarily by plugins, has been deprecated since version 2.9, in favour of Authenticator#enabled?. This PR confirms we are seeing no more usage and removes the method.
In 07ecbb5a3b we ensure the mentions in a group's activity page worked properly but we missed adding proper support for infinite loading.
The client is using the `before` parameter instead of the `before_post_id` to do the pagination.
This adds support for `before` as well as some tests to ensure it doesn't regress.
I also added tests to the group's activity posts as well since those were missing.
Finally I deleted some unused code (`group.messages_for`) which is not used anymore.
Context - https://meta.discourse.org/t/-/308044/9
