This commit removes the 'experimental_preconnect_link_header' site setting, and the 'preload_link_header' site setting, and introduces two new global settings: early_hint_header_mode and early_hint_header_name.
We don't actually send 103 Early Hint responses from Discourse. However, upstream proxies can be configured to cache a response header from the app and use that to send an Early Hint response to future clients.
- `early_hint_header_mode` specifies the mode for the early hint header. Can be nil (disabled), "preconnect" (lists just CDN domains) or "preload" (lists all assets).
- `early_hint_header_name` specifies which header name to use for the early hint. Defaults to "Link", but can be changed to support different proxy mechanisms.
When crawlers visit a post-specific URL like `/t/-/{topic-id}/{post-number}`, we use the canonical to direct them to the appropriate crawler-optimised paginated view (e.g. `?page=3`).
However, analysis of google results shows that the post-specific URLs are still being included in the index. Google doesn't tell us exactly why this is happening. However, as a general rule, 'A large portion of the duplicate page's content should be present on the canonical version'.
In our previous implementation, this wasn't 100% true all the time. That's because a request for a post-specific URL would include posts 'surrounding' that post, and won't exactly conform to the page boundaries which are used in the canonical version of the page. Essentially: in some cases, the content of the post-specific pages would include many posts which were not present on the canonical paginated version.
This commit aims to resolve that problem by simplifying the implementation. Instead of rendering posts surrounding the target post_number, we will only render the target post, and include a link to 'show post in topic'. With this new implementation, 100% of the post-specific page content will be present on the canonical paginated version, which will hopefully mean google reduces their indexing of the non-canonical post-specific pages.
To improve performance, we omit the basic-HTML version of pages when users are logged in, or when they are using a modern mobile device. This can be confusing when analysing the SEO of sites, so this commit adds a short static message when content is omitted.
Before this commit, we had a yarn package set up in the root directory and also in `app/assets/javascripts`. That meant two `yarn install` calls and two `node_modules` directories. This commit merges them both into the root location, and updates references to node_modules.
A previous attempt can be found at https://github.com/discourse/discourse/pull/21172. This commit re-uses that script to merge the `yarn.lock` files.
Co-authored-by: Jarek Radosz <jradosz@gmail.com>
In safe mode plugins are not loaded, so the plugin admin
routes are not loaded. This was causing errors in the
admin sidebar because we are trying to show links to the plugin
admin routes.
This fixes the issue by just not adding the plugin links if
we are in safe mode.
The strict-dynamic CSP directive is supported in all our target browsers, and makes for a much simpler configuration. Instead of allowlisting paths, we use a per-request nonce to authorize `<script>` tags, and then those scripts are allowed to load additional scripts (or add additional inline scripts) without restriction.
This becomes especially useful when admins want to add external scripts like Google Tag Manager, or advertising scripts, which then go on to load a ton of other scripts.
All script tags introduced via themes will automatically have the nonce attribute applied, so it should be zero-effort for theme developers. Plugins *may* need some changes if they are inserting their own script tags.
This commit introduces a strict-dynamic-based CSP behind an experimental `content_security_policy_strict_dynamic` site setting.
These routes were previously rendered using Rails, and had a fairly fragile 2fa implementation in vanilla-js. This commit refactors the routes to be handled in the Ember app, removes the custom vanilla-js bundles, and leans on our centralized 2fa implementation. It also introduces a set of system specs for the behavior.
Safari has a bug which means that scripts with the `defer` attribute are executed before stylesheets have finished loading. This is being tracked at https://bugs.webkit.org/show_bug.cgi?id=209261.
This commit works around the problem by introducing a no-op inline `<script>` to the end of our HTML document. This works because defer scripts are guaranteed to run after inline scripts, and inline scripts are guaranteed to run after any preceding stylesheets.
Technically we only need this for Safari. But given that the cost is so low, it makes sense to include it everywhere rather than incurring the complexity of gating it by user-agent.
Some attributes of the microdata schema `DiscussionForumPosting` are rendered in the context of the first post.
Ensure these attributes are also set if the first post is not part of the current view.
* Ensure consistent `datePublished` and remove `text` on second page in topic microdata schema
Always use `datePublished` from topic and never from `first_psot`. This ensures `datePublished` to be consistent on `first page` and `page=2+`.
No need to repeat `text` on `page=2+`. Especially do not set `text` on `page=2+` if it is only an abstract and thereby not 100% consistent with `text` on `first page`.
* Keep `text`attribute on follow-up pages
This commit adds an additional toggle to our safe-mode system. When enabled, it will cause all deprecation messages to become exceptions. This gives admins a way to test their themes/plugins against upcoming Discourse changes without needing to use the browser developer tools.
We were previously relying on Ember's 'vendor' bundle to make the jquery global available on the activate_account route. That no longer happens under our Ember 5 build.
This commit updates our activate-account script to remove the need for jquery, so that it works under both Ember 3 and Ember 5 builds.
Previously, we were parsing webpack JS chunk filenames from the HTML files which ember-cli generates. This worked ok for simple entrypoints, but falls apart once we start using async imports(), which are not included in the HTML.
This commit uses the stats plugin to generate an assets.json file, and updates Rails to parse it instead of the HTML. Caching on the Rails side is also improved to avoid reading from the filesystem multiple times per request in develoment.
Co-authored-by: Godfrey Chan <godfreykfc@gmail.com>
Since we don't have icons or access to the JS that transforms
hashtag icon placeholders into their proper icons and colours
on embed and publish pages, we need to at least show _something_
and make sure the hashtags are not totally broken on these pages.
Currently, `window.I18n` is defined in an old school hand written
script, inlined into locale/*.js by the Rails asset pipeline, and
then the global variable is shimmed into a pseudo AMD module later
in `module-shims.js`.
This approach has some problems – for one thing, when we add a new
V2 addon (e.g. in #23859), Embroider/Webpack is stricter about its
dependencies and won't let you `import from "I18n";` when `"I18n"`
isn't listed as one of its `dependencies` or `peerDependencies`.
This moves `I18n` into a real package – `discourse-i18n`. (I was
originally planning to keep the `I18n` name since it's a private
package anyway, but NPM packages are supposed to have lower case
names and that may cause problems with other tools.)
This package defines and exports a regular class, but also defines
the default global instance for backwards compatibility. We should
use the exported class in tests to make one-off instances without
mutating the global instance and having to clean it up after the
test run. However, I did not attempt that refactor in this PR.
Since `discourse-i18n` is now included by the app, the locale
scripts needs to be loaded after the app chunks. Since no "real"
work happens until later on when we kick things off in the boot
script, the order in which the script tags appear shouldn't be a
problem. Alternatively, we can rework the locale bundles to be more
lazy like everything else, and require/import them into the app.
I avoided renaming the imports in this commit since that would be
quite noisy and drowns out the actual changes here. Instead, I used
a Webpack alias to redirect the current `"I18n"` import to the new
package for the time being. In a separate commit later on, I'll
rename all the imports in oneshot and remove the alias. As always,
plugins and the legacy bundles (admin/wizard) still relies on the
runtime AMD shims regardless.
For the most part, I avoided refactoring the actual I18n code too
much other than making it a class, and some light stuff like `var`
into `let`.
However, now that it is in a reasonable format to work with (no
longer inside the global script context!) it may also be a good
opportunity to refactor and make clear what is intended to be
public API vs internal implementation details.
Speaking of, I took the librety to make `PLACEHOLDER`, `SEPARATOR`
and `I18nMissingInterpolationArgument` actual constants since it
seemed pretty clear to me those were just previously stashed on to
the `I18n` global to avoid polluting the global namespace, rather
than something we expect the consumers to set/replace.
Until now, we have allowed testing themes in production environments via `/theme-qunit`. This was made possible by hacking the ember-cli build so that it would create the `tests.js` bundle in production. However, this is fundamentally problematic because a number of test-specific things are still optimized out of the Ember build in production mode. It also makes asset compilation significantly slower, and makes it more difficult for us to update our build pipeline (e.g. to introduce Embroider).
This commit removes the ability to run qunit tests in production builds of the JS app when the Embdroider flag is enabled. If a production instance of Discourse exists exclusively for the development of themes (e.g. discourse.theme-creator.io) then they can add `EMBER_ENV: development` to their `app.yml` file. This will build the entire app in development mode, and has a significant performance impact. This must not be used for real production sites.
This commit also refactors many of the request specs into system specs. This means that the tests are guaranteed to have Ember assets built, and is also a better end-to-end test than simply checking for the presence of certain `<script>` tags in the HTML.
Discourse core now builds and runs with Embroider! This commit adds
the Embroider-based build pipeline (`USE_EMBROIDER=1`) and start
testing it on CI.
The new pipeline uses Embroider's compat mode + webpack bundler to
build discourse code, and leave everything else (admin, wizard,
markdown-it, plugins, etc) exactly the same using the existing
Broccoli-based build as external bundles (<script> tags), passed
to the build as `extraPublicTress` (which just means they get
placed in the `/public` folder).
At runtime, these "external" bundles are glued back together with
`loader.js`. Specifically, the external bundles are compiled as
AMD modules (just as they were before) and registered with the
global `loader.js` instance. They expect their `import`s (outside
of whatever is included in the bundle) to be already available in
the `loader.js` runtime registry.
In the classic build, _every_ module gets compiled into AMD and
gets added to the `loader.js` runtime registry. In Embroider,
the goal is to do this as little as possible, to give the bundler
more flexibility to optimize modules, or omit them entirely if it
is confident that the module is unused (i.e. tree-shaking).
Even in the most compatible mode, there are cases where Embroider
is confident enough to omit modules in the runtime `loader.js`
registry (notably, "auto-imported" non-addon NPM packages). So we
have to be mindful of that an manage those dependencies ourselves,
as seen in #22703.
In the longer term, we will look into using modern features (such
as `import()`) to express these inter-dependencies.
This will only be behind a flag for a short period of time while we
perform some final testing. Within the next few weeks, we intend
to enable by default and remove the flag.
---------
Co-authored-by: David Taylor <david@taylorhq.com>
Previously we were patching ember-cli so that it would split the test bundle into two halves: the helpers, and the tests themselves. This was done so that we could use the helpers for `/theme-qunit` without needing to load all the core tests. This patch has proven problematic to maintain, and will become even harder under Embroider.
This commit removes the patch, so that ember-cli goes back to generating a single `tests.js` bundle. This means that core test definitions will now be included in the bundle when using `/theme-qunit`, and so this commit also updates our test module filter to exclude them from the run. This is the same way that we handle plugin tests on the regular `/tests` route, and is fully supported by qunit.
For now, this keeps `/theme-qunit` working in both development and production environments. However, we are very likely to drop support in production as part of the move to Embroider.
Why this change?
In production, this appeared as a small hotspot as where we're calling
`poster.name_and_description` twice which in turns makes a method call
to `I18n.t`. When we're rendering a topic list with many topics and each
topic has many posters, this repeated and unnecessary method call
quickly adds up.
Prior to this commit, we didn't have RTL versions of our admin and plugins CSS bundles and we always served LTR versions of those bundles even when users used an RTL locale, causing admin and plugins UI elements to never look as good as when an LTR locale was used. Example of UI issues prior to this commit were: missing margins, borders on the wrong side and buttons too close to each other etc.
This commit creates an RTL version for the admin CSS bundle as well as RTL bundles for all the installed plugins and serves those RTL bundles to users/sites who use RTL locales.
Privacy Policy and Terms of Service topics are no longer created by
default for communities that have not set a company name. For this
reason, some URLs were pointing to 404 page.
Legal topics, such as the Terms of Service and Privacy Policy topics
do not make sense if the entity creating the community is not a company.
These topics will be created and updated only when the company name is
present and deleted when it is not.
This commit fixes an issue where the Likes Received notification
count in the user digest email was not affected by the
since/last_seen date for the user, which meant that no matter
how long it had been since the user visited the count was
always constant.
Now instead for the Likes Received count, we only count the
unread notifications of that type since the user was last
seen.
Adds a bit more information to the categories view for crawlers, for better indexing of deep content.
This only works when the "Subcategories with Featured Topics" is the selected layout.
