Commit Graph

9645 Commits

Author SHA1 Message Date
David Taylor
0889f22a3b
FIX: Correctly map fingerprinted vendor.js file in production (#24267)
Followup to a0b94dca16
2023-11-07 11:34:19 +00:00
David Taylor
a0b94dca16
DEV: Use WebPack stats plugin to map entrypoints to chunks (#24239)
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>
2023-11-07 10:24:49 +00:00
Martin Brennan
b90b7ac705
DEV: Move shared_drafts_min_trust_level to group setting (#24257)
No plugins or themes rely on shared_drafts_min_trust_level so we
can just switch straight over to shared_drafts_allowed_groups

c.f. https://meta.discourse.org/t/changes-coming-to-settings-for-giving-access-to-features-from-trust-levels-to-groups/283408
2023-11-07 14:03:25 +10:00
Martin Brennan
fe05fdae24
DEV: Introduce S3 transfer acceleration for uploads behind hidden setting (#24238)
This commit adds an `enable_s3_transfer_acceleration` site setting,
which is hidden to begin with. We are adding this because in certain
regions, using https://aws.amazon.com/s3/transfer-acceleration/ can
drastically speed up uploads, sometimes as much as 70% in certain
regions depending on the target bucket region. This is important for
us because we have direct S3 multipart uploads enabled everywhere
on our hosting.

To start, we only want this on the uploads bucket, not the backup one.
Also, this will accelerate both uploads **and** downloads, depending
on whether a presigned URL is used for downloading. This is the case
when secure uploads is enabled, not anywhere else at this time. To
enable the S3 acceleration on downloads more generally would be a
more in-depth change, since we currently store S3 Upload record URLs
like this:

```
 url: "//test.s3.dualstack.us-east-2.amazonaws.com/original/2X/6/123456.png"
```

For acceleration, `s3.dualstack` would need to be changed to `s3-accelerate.dualstack`
here.

Note that for this to have any effect, Transfer Acceleration must be enabled
on the S3 bucket used for uploads per https://docs.aws.amazon.com/AmazonS3/latest/userguide/transfer-acceleration-examples.html.
2023-11-07 11:50:40 +10:00
Godfrey Chan
9a1695ccc1
DEV: remove markdown-it-bundle and custom build code (#23859)
With Embroider, we can rely on async `import()` to do the splitting
for us.

This commit extracts from `pretty-text` all the parts that are
meant to be loaded async into a new `discourse-markdown-it` package
that is also a V2 addon (meaning that all files are presumed unused
until they are imported, aka "static").

Mostly I tried to keep the very discourse specific stuff (accessing
site settings and loading plugin features) inside discourse proper,
while the new package aims to have some resembalance of a general
purpose library, a MarkdownIt++ if you will. It is far from perfect
because of how all the "options" stuff work but I think it's a good
start for more refactorings (clearing up the interfaces) to happen
later.

With this, pretty-text and app/lib/text are mostly a kitchen sink
of loosely related text processing utilities.

After the refactor, a lot more code related to setting up the
engine are now loaded lazily, which should be a pretty nice win. I
also noticed that we are currently pulling in the `xss` library at
initial load to power the "sanitize" stuff, but I suspect with a
similar refactoring effort those usages can be removed too. (See
also #23790).

This PR does not attempt to fix the sanitize issue, but I think it
sets things up on the right trajectory for that to happen later.

Co-authored-by: David Taylor <david@taylorhq.com>
2023-11-06 16:59:49 +00:00
David Taylor
c5e6e271a5
DEV: Remove legacy /brotli_asset workaround (#24243)
When Discourse first introduced brotli support, reverse-proxy/CDN support for passing through the accept-encoding header to our NGINX server was very poor. Therefore, a separate `/brotli_assets/...` path was introduced to serve the brotli assets. This worked well, but introduces additional complexity and inconsistencies.

Nowadays, Brotli encoding is well supported, so we don't need the separate paths any more. Requests can be routed to the asset `.js` URLs, and NGINX will serve the brotli/gzip version of the asset automatically.
2023-11-06 15:57:00 +00:00
David Taylor
82d6d691ee
DEV: Refactor discovery routes to remove use of 'named outlets' (#22622)
The motivation of this PR is to remove our dependence on Ember's 'named outlets', which are removed in Ember 4+.

At a high-level, the changes can be summarized as:

- The top-level `discovery` route is totally emptied of all logic. The HTML structure of the template is moved into the `<Discovery::Layout />` component for use by child routes.

- `AbstractTopicRoute` and `AbstractCategoryRoute` routes now both lean on the `DiscoverySortableController` and associated template. This controller is where most of the logic from the old top-level `discovery` controller has ended up.

- All navigation controllers/templates have been replaced with components. `navigation/categories`, `navigation/category` and `navigation/default` were very similar, and so they've all been combined into `<Navigation::Default>`. `navigation/filter` gets its own component.

- The `discovery/topics` controller/template have been moved into a new `<Discovery::Topics>` component.

Various other parts of the app have been tweaked to support these changes, but I've tried to keep that to a minimum.

Anything from `<TopicList>` down is untouched, which should hopefully mean that a large proportion of topic-list-customizing themes are unaffected.

For more information, see https://meta.discourse.org/t/282816
2023-11-06 10:39:31 +00:00
Martin Brennan
baeac8f105
FIX: Do not log client site setting deprecations (#24237)
For deprecated site settings, we log out a warning when
the old setting is used. However when we convert all the client
settings to JSON, we are creating a lot of log noise like this:

> Deprecation notice: `SiteSetting.anonymous_posting_min_trust_level` has been deprecated.

We don't need to do this because we are just dumping the JSON.
2023-11-06 16:36:20 +10:00
Ted Johansson
c3708c4276
DEV: Add support for custom retries for scheduled admin checks (#24224)
We updated scheduled admin checks to run concurrently in their own jobs. The main reason for this was so that we can implement re-check functionality for especially flaky checks (e.g. group e-mail credentials check.)

This works in the following way:

1. The check declares its retry policy using class methods.
2. A block can be yielded to if there are problems, but before they are committed to Redis.
3. The job uses this block to either a) schedule a retry if there are any remaining or b) do nothing and let the check commit.
2023-11-06 08:57:02 +08:00
Osama Sayegh
3cadd6769e
FEATURE: Theme settings migrations (#24071)
This commit introduces a new feature that allows theme developers to manage the transformation of theme settings over time. Similar to Rails migrations, the theme settings migration system enables developers to write and execute migrations for theme settings, ensuring a smooth transition when changes are required in the format or structure of setting values.

Example use cases for the theme settings migration system:

1. Renaming a theme setting.

2. Changing the data type of a theme setting (e.g., transforming a string setting containing comma-separated values into a proper list setting).

3. Altering the format of data stored in a theme setting.

All of these use cases and more are now possible while preserving theme setting values for sites that have already modified their theme settings.

Usage:

1. Create a top-level directory called `migrations` in your theme/component, and then within the `migrations` directory create another directory called `settings`.

2. Inside the `migrations/settings` directory, create a JavaScript file using the format `XXXX-some-name.js`, where `XXXX` is a unique 4-digit number, and `some-name` is a descriptor of your choice that describes the migration.

3. Within the JavaScript file, define and export (as the default) a function called `migrate`. This function will receive a `Map` object and must also return a `Map` object (it's acceptable to return the same `Map` object that the function received).

4. The `Map` object received by the `migrate` function will include settings that have been overridden or changed by site administrators. Settings that have never been changed from the default will not be included.

5. The keys and values contained in the `Map` object that the `migrate` function returns will replace all the currently changed settings of the theme.

6. Migrations are executed in numerical order based on the XXXX segment in the migration filenames. For instance, `0001-some-migration.js` will be executed before `0002-another-migration.js`.

Here's a complete example migration script that renames a setting from `setting_with_old_name` to `setting_with_new_name`:

```js
// File name: 0001-rename-setting.js

export default function migrate(settings) {
  if (settings.has("setting_with_old_name")) {
    settings.set("setting_with_new_name", settings.get("setting_with_old_name"));
  }
  return settings;
}
```

Internal topic: t/109980
2023-11-02 08:10:15 +03:00
Martin Brennan
d50fccfcaf
DEV: Do not auto-generate plugin routes for admin experimental sidebar (#24211)
Followup to b53449eac9, we cannot
generate the links to plugin admin pages in this way because it
depends on which plugins are installed; we would need to somehow
do it at runtime. Leaving it out for now, for people who need to
find these admin routes the Ember Inspector extension for Chrome
can be used in the meantime.
2023-11-02 12:13:20 +10:00
Martin Brennan
b53449eac9
DEV: Automatically generate all admin links for app for new sidebar (#24175)
NOTE: Most of this is experimental and will be removed at a later
time, which is why things like translations have not been added.

The new /admin-revamp UI uses a sidebar for admin nav. This initial
step adds a script to generate a map of all the current admin nav
into a format the sidebar to read. Then, people can experiment
with different changes to this structure.

The structure can then be edited from `/admin-revamp/config/sidebar-experiment`,
and it is saved to local storage so people can visually experiment with different ways
of showing the admin sidebar links.
2023-11-02 10:34:37 +10:00
Daniel Waterworth
5c92d7da22
FIX: Increase defer queue length (#24200)
It's important that there is a limit, but the current limit is too
restrictive.
2023-11-01 14:02:53 -05:00
David Taylor
85c2cc2f9e
FIX: Correctly handle materialized views during db restore (#24193) 2023-11-01 16:46:13 +00:00
Bianca Nenciu
fd07c943ad
DEV: Refactor watched words (#24163)
- Ignore only invalid words, not all words if one of them is invalid

- The naming scheme for methods was inconsistent

- Optimize regular expressions
2023-11-01 16:41:10 +02:00
Neil Lalonde
5dae0fdfb6
DEV: add a plugin modifier to change hidden site settings (#24160)
Plugins can use a new modifier to change which site settings are hidden using the :hidden_site_settings modifier. For example:

```
register_modifier(:hidden_site_settings) do |hidden|
  (hidden + [:invite_only, :login_required]).uniq
end
```
2023-10-31 10:09:51 -04:00
Martin Brennan
0a4b1b655d
FIX: Alter "Take Action" default behaviour to hide post (#24088)
This commit fixes an issue where clicking the default
"Take Action" option on a flag for a post doesn't always
end up with the post hidden.

This is because the "take_action" score bonus doesn’t take into account
the final score required to hide the post.

Especially with the `hide_post_sensitivity` site setting set to `low`
sensitivity, there is a likelihood the score needed to hide the post
won’t be reached.

Now, the default "Take Action" button has been changed to "Hide Post"
to reflect what is actually happening and the description has been
improved, and if "Take Action" is clicked we _always_ hide the post
regardless of score and sensitivity settings. This way the action reflects
expectations of the user.
2023-10-30 10:24:35 +10:00
Blake Erickson
1a78e8ec1b
FEATURE: Add keywords support for site_settings search (#24146)
* FEATURE: Add keywords support for site_settings search

This change allows for a new `keywords` field that can be added to site
settings in order to help with searching. Keywords are not visible in
the UI, but site settings matching one of the contained keywords will
appear when searching for that keyword.

Keywords can be added for site settings inside of the
`config/locales/server.en.yml` file under the new `keywords` key.

```
site_settings
  example_1: "fancy description"
  example_2: "another description"

  keywords:
    example_1: "capybara"
```

* Add keywords entry for a recently changed site setting and add system specs

* Use page.visit now that we have our own visit
2023-10-27 15:42:57 -06:00
David Taylor
983fd04f4b
FIX: Memoization in EmberCli ruby helper class (#24139)
Previously we were memoizing based on `defined?`, but the `clear_cache!` method was doing `@blah = nil`. That meant that after the cache was cleared, future calls to the memoized method would return `nil` instead of triggering a recalculation.
2023-10-27 13:35:33 +01:00
David Taylor
e2bb84757e
FIX: Ensure JS transpiler is available for multisite-migrate (#24136)
Previously done for the normal `db:migrate` command in 1e59e18ad2
2023-10-27 09:59:41 +01:00
Ted Johansson
f9f9cf0bf4
DEV: Remove unreachable IP address validation message (#24131)
The message: :signup_not_allowed option to the IP address validator does nothing, because the AllowedIpAddressValidator chooses one of either:

- ip_address.blocked or
- ip_address.max_new_accounts_per_registration_ip

internally. This means that the translation for this was also never used.

This PR removes the ineffectual option and the unused translation. It also moves the translated error messages for blocked and max_new_accounts_per_registration_ip into the correct location so we can pass a symbol to ActiveModel::Errors#add.

There is no actual change in behaviour.
2023-10-27 15:22:38 +08:00
Ted Johansson
9acdafe87c
DEV: Remove deprecated EmailValidator.email_regex (#24129)
The EmailValidator.email_regex method was moved to EmailAddressValidator.email_regex and marked for removal in 2.9.0. The method was proxied for backwards compatibility in plugins. This PR removes the method.
2023-10-27 15:11:10 +08:00
Ted Johansson
ac70ef929f
DEV: Remove deprecated #pluck_first freedom patch (#24130)
The #pluck_first method got a replacement in ActiveRecord core named #pick. After a bunch of replacements in core and plugins, we are now ready to retire this freedom patch.
2023-10-27 14:52:23 +08:00
Neil Lalonde
bd7cea7dd7
Revert "DEV: add a plugin modifier to change hidden site settings (#24104)" (#24117)
This reverts commit ddcee84e45.
2023-10-26 15:56:08 -04:00
Neil Lalonde
ddcee84e45
DEV: add a plugin modifier to change hidden site settings (#24104)
Plugins can use a new modifier to change which site settings are
hidden using the :hidden_site_settings modifier. For example:

register_modifier(:hidden_site_settings) do |hidden|
  (hidden + [:invite_only, :login_required]).uniq
end
2023-10-26 15:28:39 -04:00
David Taylor
c124c69833
DEV: Simplify sprockets configuration (#24111)
- Remove the wildcard crawler. This was already excluding almost all file types, but the exclude list was missing '.gjs' which meant those files were unnecessarily being hoisted into the `public/` directory during precompile

- Automatically include all ember-cli-generated assets without needing them to be listed. The main motivation for this change is to allow us to start using async imports via Embroider/Webpack. The filenames for those new async bundles will not be known in advance.

- Skips sprockets fingerprinting on Embroider/Webpack chunk JS files. Their filenames already include a fingerprint, and having sprockets change the filenames will cause problems for the async import feature (where filenames are included deep inside js bundles)

This commit also updates our ember-cli build so that it skips building plugin tests in the production environment. This should provide a slight build speed improvement.
2023-10-26 17:29:53 +01:00
Angus McLeod
2a75656ff2
DEV: Add category custom field preloading to CategoryList (#23969)
This commit also introduced a plugin API for preloading category custom
fields.
2023-10-26 16:34:23 +03:00
David Taylor
c88303bb27
DEV: Relax auth provider registration restrictions for plugins (#24095)
In the past we would build the stack of Omniauth providers at boot, which meant that plugins had to register any authenticators in the root of their plugin.rb (i.e. not in an `after_initialize` block). This could be frustrating because many features are not available that early in boot (e.g. Zeitwerk autoloading).

Now that we build the omniauth strategy stack 'just in time', it is safe for plugins to register their auth methods in an `after_initialize` block. This commit relaxes the old restrictions so that plugin authors have the option to move things around.
2023-10-26 10:54:30 +01:00
David Taylor
5c38e55dc9
DEV: Only run omniauth strategies for enabled authenticators (#24094)
Previously, we would build the stack of omniauth authenticators once on boot. That meant that all strategies had to be included, even if they were disabled. We then used the `before_request_phase` to ensure disabled strategies could not be used. This works well, but it means that omniauth is often doing unnecessary work running logic in disabled strategies.

This commit refactors things so that we build the stack of strategies on each request. That means we only need to include the enabled strategies in the stack - disabled strategies are totally ignored. Building the stack on-demand like this does add some overhead to auth requests, but on the majority of sites that will be significantly outweighed by the fact we're now skipping logic for disabled authenticators.

As well as the slight performance improvement, this new approach means that:

- Broken (i.e. exception-raising) strategies cannot cause issues on a site if they're disabled

- `other_phase` of disabled strategies will never appear in the backtrace of other authentication errors
2023-10-25 13:52:33 +01:00
Martin Brennan
9db4eaa870
DEV: Change anonymous_posting_min_trust_level to a group-based setting (#24072)
No plugins or themes rely on anonymous_posting_min_trust_level so we
can just switch straight over to anonymous_posting_allowed_groups

This also adds an AUTO_GROUPS const which can be imported in JS
tests which is analogous to the one defined in group.rb. This can be used
to set the current user's groups where JS tests call for checking these groups
against site settings.

Finally a AtLeastOneGroupValidator validator is added for group_list site
settings which ensures that at least one group is always selected, since if
you want to allow all users to use a feature in this way you can just use
the everyone group.
2023-10-25 11:45:10 +10:00
Neil Lalonde
8eda55e639
DEV: add a remove_step method to Wizard (#24063)
Using Wizard.exclude_steps applies to all sites in a multisite cluster.
In order to exclude steps for individual sites at run-time, a new
instance method `remove_step` is being added.
2023-10-24 13:22:55 -04:00
Blake Erickson
07360a96aa
DEV: Remove core plugins from plugin metadata file (#24070)
* DEV: Remove core plugins from plugin metadata file

* Add new plugin names
2023-10-23 15:26:59 -06:00
Jeff Wong
a2000a3559
FIX: missing quote (#24049) 2023-10-22 19:23:55 -07:00
Jeff Wong
441a330f1e
DEV: refactor rake asset precompile tasks (#24045)
* DEV: refactor rake asset precompile tasks

add a separate ember build task that does not depend on rails env
allowing us to compile assets without db+redis connections

rename EMBER_CLI_COMPILE_DONE to SKIP_EMBER_CLI_COMPILE
better semantics in build steps
2023-10-22 18:55:09 -07:00
David Taylor
c06b308895
DEV: Support RUN_SYSTEM_TESTS and SINGLE_PLUGIN in docker test task (#24040)
Previously, RUN_SYSTEM_TESTS would run system tests of all plugins. This commit makes it respect the SINGLE_PLUGIN env if it's set.
2023-10-23 07:41:21 +08:00
Sérgio Saquetim
0cfc42e0e6
FEATURE: Add dark mode option for category backgrounds (#24003)
Adds a new upload field for a dark mode category background that will be used as an alternative when Discourse is using a dark mode theme.
2023-10-20 12:48:06 +00:00
Ty Correll
700c636d29
UX: unify ai representing icon (#24029)
This PR addresses the push to unify the icon representing AI throughout Discourse, by using the discourse-sparkles icon.

The icon is being moved to core to make changes with dependencies included in core that were using the "magic" icon instead.

In 2 places "magic" -> "discourse-sparkles,
1. topic summaries
2. (unreleased) chat summaries example
2023-10-19 17:30:27 -05:00
Rafael dos Santos Silva
0604dc7d3e
FIX: Remove invalid chars from feed XMLs (#24001)
* FIX: Remove invalid chars from feed XMLs

See https://meta.discourse.org/t/rss-subscription-broken-by-post-content/282415?u=falco

* Adjust filter condition
2023-10-19 14:37:37 -03:00
Ted Johansson
47b2667099
DEV: Remove deprecated UrlHelper#escape_uri helper (#24002)
The UrlHelper#escape_uri helper has been deprecated and replaced by UrlHelper#normalized_encode, and was marked for removal in 3.0. This PR removes the method.
2023-10-19 10:37:14 +08:00
Martin Brennan
5dc45b5dcf
FIX: Secure upload post processing race condition (#23968)
* FIX: Secure upload post processing race condition

This commit fixes a couple of issues.

A little background -- when uploads are created in the composer
for posts, regardless of whether the upload will eventually be
marked secure or not, if secure_uploads is enabled we always mark
the upload secure at first. This is so the upload is by default
protected, regardless of post type (regular or PM) or category.

This was causing issues in some rare occasions though because
of the order of operations of our post creation and processing
pipeline. When creating a post, we enqueue a sidekiq job to
post-process the post which does various things including
converting images to lightboxes. We were also enqueuing a job
to update the secure status for all uploads in that post.

Sometimes the secure status job would run before the post process
job, marking uploads as _not secure_ in the background and changing
their ACL before the post processor ran, which meant the users
would see a broken image in their posts. This commit fixes that issue
by always running the upload security changes inline _within_ the
cooked_post_processor job.

The other issue was that the lightbox wrapper link for images in
the post would end up with a URL like this:

```
href="/secure-uploads/original/2X/4/4e1f00a40b6c952198bbdacae383ba77932fc542.jpeg"
```

Since we weren't actually using the `upload.url` to pass to
`UrlHelper.cook_url` here, we weren't converting this href to the CDN
URL if the post was not in a secure context (the UrlHelper does not
know how to convert a secure-uploads URL to a CDN one). Now we
always end up with the correct lightbox href. This was less of an issue
than the other one, since the secure-uploads URL works even when the
upload has become non-secure, but it was a good inconsistency to fix
anyway.
2023-10-18 23:48:01 +00:00
Jarek Radosz
16d16c8969
DEV: Precompile the transpiler before themes:update (#23997) 2023-10-19 01:00:23 +02:00
Jarek Radosz
75c9635d8b
DEV: Remove the transpilation message (#23998) 2023-10-19 01:00:15 +02:00
Godfrey Chan
c34f8b65cb
DEV: Rename I18n imports to discourse-i18n (#23915)
As of #23867 this is now a real package, so updating the imports to
use the real package name, rather than relying on the alias. The
name change in the package name is because `I18n` is not a valid
name as NPM packages must be all lowercase.

This commit also introduces an eslint rule to prevent importing from
the old I18n path.

For themes/plugins, the old 'i18n' name remains functional.
2023-10-18 11:07:09 +01:00
Martin Brennan
61c87fb59f
FIX: Properly attach secure images to email for non-secure uploads (#23865)
There are cases where a user can copy image markdown from a public
post (such as via the discourse-templates plugin) into a PM which
is then sent via an email. Since a PM is a secure context (via the
.with_secure_uploads? check on Post), the image will get a secure
URL in the PM post even though the backing upload is not secure.

This fixes the bug in that case where the image would be stripped
from the email (since it had a /secure-uploads/ URL) but not re-attached
further down the line using the secure_uploads_allow_embed_images_in_emails
setting because the upload itself was not secure.

The flow in Email::Sender for doing this is still not ideal, but
there are chicken and egg problems around when to strip the images,
how to fit in with other attachments and email size limits, and
when to apply the images inline via Email::Styles. It's convoluted,
but at least this fixes the Template use case for now.
2023-10-17 14:08:21 +10:00
Penar Musaraj
1400d4a8fd
Bump version to v3.2.0.beta3-dev 2023-10-16 11:20:22 -04:00
Penar Musaraj
be04154838
Bump version to v3.2.0.beta2 2023-10-16 11:20:20 -04:00
Alan Guo Xiang Tan
cbbe3a808b
SECURITY: Add a default limit as to when logs should be truncated
Why this change?

This ensures that malicious requests cannot end up causing the logs to
quickly fill up. The default chosen is sufficient for most legitimate
requests to the Discourse application.

When truncation happens, parsing of logs in supported format like
lograge may break down.
2023-10-16 10:34:38 -04:00
Alan Guo Xiang Tan
4cb7472376
SECURITY: Prevent arbitrary topic custom fields from being set
Why this change?

The `PostsController#create` action allows arbitrary topic custom fields
to be set by any user that can create a topic. Without any restrictions,
this opens us up to potential security issues where plugins may be using
topic custom fields in security sensitive areas.

What does this change do?

1. This change introduces the `register_editable_topic_custom_field` plugin
API which allows plugins to register topic custom fields that are
editable either by staff users only or all users. The registered
editable topic custom fields are stored in `DiscoursePluginRegistry` and
is called by a new method `Topic#editable_custom_fields` which is then
used in the `PostsController#create` controller action. When an unpermitted custom fields is present in the `meta_data` params,
a 400 response code is returned.

2. Removes all reference to `meta_data` on a topic as it is confusing
   since we actually mean topic custom fields instead.
2023-10-16 10:34:35 -04:00
Bianca Nenciu
76bdea5ce2
SECURITY: Hide user profiles from public
User profiles, including the summary, should be private to anonymous
users if hide_user_profiles_from_public is enabled.
2023-10-16 10:34:32 -04:00
Blake Erickson
2443446e62
DEV: Prevent videos from preloading metadata (#23807)
Preloading just metadata is not always respected by browsers, and
sometimes the whole video will be downloaded. This switches to using a
placeholder image for the video and only loads the video when the play
button is clicked.
2023-10-12 13:47:48 -06:00