For threaded comments, we need comments to be retrieved within bounds, so logged-out users don't see unmoderated comments on the front end, etc.
Updates unit tests.
See #8071.
git-svn-id: https://develop.svn.wordpress.org/trunk@34569 602fd350-edb4-49c9-b593-d223f7449a82
Previously, the 'page_comments' toggle allowed users to disable comment
pagination. This toggle was only superficial, however. Even with
'page_comments' turned on, `comments_template()` loaded all of a post's
comments into memory, and passed them to `wp_list_comments()` and
`Walker_Comment`, the latter of which produced markup for only the
current page of comments. In other words, it was possible to enable
'page_comments', thereby showing only a subset of a post's comments on a given
page, but all comments continued to be loaded in the background. This technique
scaled poorly. Posts with hundreds or thousands of comments would load slowly,
or not at all, even when the 'comments_per_page' setting was set to a
reasonable number.
Recent changesets have addressed this problem through more efficient tree-
walking, better descendant caching, and more selective queries for top-level
post comments. The current changeset completes the project by addressing the
root issue: that loading a post causes all of its comments to be loaded too.
Here's the breakdown:
* Comment pagination is now forced. Setting 'page_comments' to false leads to evil things when you have many comments. If you want to avoid pagination, set 'comments_per_page' to something high.
* The 'page_comments' setting has been expunged from options-discussion.php, and from places in the codebase where it was referenced. For plugins relying on 'page_comments', we now force the value to `true` with a `pre_option` filter.
* `comments_template()` now queries for an appropriately small number of comments. Usually, this means the `comments_per_page` value.
* To preserve the current (odd) behavior for comment pagination links, some unholy hacks have been inserted into `comments_template()`. The ugliness is insulated in this function for backward compatibility and to minimize collateral damage. A side-effect is that, for certain settings of 'default_comments_page', up to 2x the value of `comments_per_page` might be fetched at a time.
* In support of these changes, a `$format` parameter has been added to `WP_Comment::get_children()`. This param allows you to request a flattened array of comment children, suitable for feeding into `Walker_Comment`.
* `WP_Query` loops are now informed about total available comment counts and comment pages by the `WP_Comment_Query` (`found_comments`, `max_num_pages`), instead of by `Walker_Comment`.
Aside from radical performance improvements in the case of a post with many
comments, this changeset fixes a bug that caused the first page of comments to
be partial (`found_comments` % `comments_per_page`), rather than the last, as
you'd expect.
Props boonebgorges, wonderboymusic.
Fixes#8071.
git-svn-id: https://develop.svn.wordpress.org/trunk@34561 602fd350-edb4-49c9-b593-d223f7449a82
Create the first ever unit tests for `get_comment_excerpt()`.
Props dannydehaan, wonderboymusic.
Fixes#27526.
git-svn-id: https://develop.svn.wordpress.org/trunk@34520 602fd350-edb4-49c9-b593-d223f7449a82
This helps to avoid PHP notices later in the function.
Props walterebert, dipesh.kakadiya, DrewAPicture.
Fixes#33947.
git-svn-id: https://develop.svn.wordpress.org/trunk@34454 602fd350-edb4-49c9-b593-d223f7449a82
[34268] introduced cache priming for commentmeta, enabled by default. To
ensure performance on single post pages - where commentmeta is most likely
to cause performance issues - we disable up-front cache-priming. Instead, we
prime commentmeta caches for all comments in the loop the first time
`get_comment_meta()` is called on the page.
Props bradt, dd32, wonderboymusic, boonebgorges.
Fixes#16894.
git-svn-id: https://develop.svn.wordpress.org/trunk@34270 602fd350-edb4-49c9-b593-d223f7449a82
There are no uses of `wp_list_comments()` in Core where `$comments` are passed as the 2nd argument.
Adds unit tests.
Props wonderboymusic, bradt.
Fixes#16894.
git-svn-id: https://develop.svn.wordpress.org/trunk@33925 602fd350-edb4-49c9-b593-d223f7449a82
* Takes inspiration from `WP_Post` and adds sanity to comment caching.
* Clarifies when the current global value for `$comment` is returned. The current implementation in `get_comment()` introduces side effects and an occasion stale global value for `$comment` when comment caches are cleaned.
* Strongly-types `@param` docs
* This class is marked `final` for now
Props wonderboymusic, nacin.
See #32619.
git-svn-id: https://develop.svn.wordpress.org/trunk@33891 602fd350-edb4-49c9-b593-d223f7449a82
It can be confusing to users and for most it is not relevant.
Commenters comfortable with HTML will know which tags are likely
to be accepted.
Props krogsgard, rachelbaker.
Fixes#30157.
git-svn-id: https://develop.svn.wordpress.org/trunk@32858 602fd350-edb4-49c9-b593-d223f7449a82
Placeholders aren't helpful and it's much easier to make a mistake if you're dealing with placeholders.
Introduced in [31388].
props pento.
fixes#26553.
git-svn-id: https://develop.svn.wordpress.org/trunk@31821 602fd350-edb4-49c9-b593-d223f7449a82
The new 'submit_button' and 'submit_field' parameters for `comment_form()`
allow developers to modify the markup of the submit button and its wrapper.
These params are accompanied by targeted 'comment_form_submit_button' and
'comment_form_submit_field' filters on the concatenated markup.
Props coffee2code, morpheu5, DrewAPicture, boonebgorges.
Fixes#15015.
git-svn-id: https://develop.svn.wordpress.org/trunk@31699 602fd350-edb4-49c9-b593-d223f7449a82
Add a class to allow targeting of comments made by members of a site rather than users of the entire network.
Props Viper007Bond, MikeHansenMe.
Fixes#24054.
git-svn-id: https://develop.svn.wordpress.org/trunk@31518 602fd350-edb4-49c9-b593-d223f7449a82
To better understand screen reader text, check out https://make.wordpress.org/accessibility/2015/02/09/hiding-text-for-screen-readers-with-wordpress-core/
Screen Reader text improves the user experience for screen reader users. It provides additional context for links, document forms and other pieces of a page that may exist visually, but are lost when looking only at the html of a site. This does change the output of comments_popup_link if you don't pass in values for $zero, $one, $more or $none. Theme authors can and should style <code>.screen-reader-text</code> in ways that are recommended in the above article to hide it visually.
Props joedolson
Fixes#26553
git-svn-id: https://develop.svn.wordpress.org/trunk@31388 602fd350-edb4-49c9-b593-d223f7449a82
