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Use the comment API rather than direct SQL queries in `comments_template()`. 

`comments_template()` is used by most themes to display a post's comments. It
shows all comments that have been approved, and also shows all pending comments
by the current visitor (as determined by the comment cookies). However, the
comments API previously had no way of querying for "all comments that are
either approved, or are unapproved but written by foo@example.com". The
workaround was a direct SQL query: uncached, not subject to the same filters as
other comment queries, and just generally icky.

The new `include_unapproved` parameter for `WP_Comment_Query` accepts an array
of user IDs or email addresses. Pending comments associated with users in this
array will be included in query results, regardless of the value of the 'status'
parameter. In `comments_template()`, we leap from direct SQL queries to
`get_comments()` plus `include_unapproved', striving to put right what once
went wrong.

Props boonebgorges, simonwheatley, hardy101, jesin.
Fixes #19623.
Built from https://develop.svn.wordpress.org/trunk@29965


git-svn-id: http://core.svn.wordpress.org/trunk@29712 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Boone Gorges 2014-10-19 19:39:20 +00:00
parent b137059656
commit 304802d70d
2 changed files with 51 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
wp-includes/comment-template.php
View File

@ -1112,15 +1112,21 @@ function comments_template( $file = '/comments.php', $separate_comments = false
*/
$comment_author_url = esc_url($commenter['comment_author_url']);
/** @todo Use API instead of SELECTs. */
$comment_args = array(
'order' => 'ASC',
'orderby' => 'comment_date_gmt',
'status' => 'approve',
'post_id' => $post->ID,
);
if ( $user_ID ) {
$comments = $wpdb->get_results($wpdb->prepare("SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d AND (comment_approved = '1' OR ( user_id = %d AND comment_approved = '0' ) ) ORDER BY comment_date_gmt", $post->ID, $user_ID));
} else if ( empty($comment_author) ) {
$comments = get_comments( array('post_id' => $post->ID, 'status' => 'approve', 'order' => 'ASC') );
} else {
$comments = $wpdb->get_results($wpdb->prepare("SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d AND ( comment_approved = '1' OR ( comment_author = %s AND comment_author_email = %s AND comment_approved = '0' ) ) ORDER BY comment_date_gmt", $post->ID, wp_specialchars_decode($comment_author,ENT_QUOTES), $comment_author_email));
$comment_args['include_unapproved'] = array( $user_ID );
} else if ( ! empty( $comment_author ) ) {
$comment_args['include_unapproved'] = array( $comment_author_email );
}
$comments = get_comments( $comment_args );
/**
* Filter the comments array.
*

43
wp-includes/comment.php
View File

@ -259,7 +259,7 @@ class WP_Comment_Query {
* @since 3.1.0
* @since 4.1.0 Introduced 'comment__in', 'comment__not_in', 'post_author__in',
* 'post_author__not_in', 'author__in', 'author__not_in',
* 'post__in', and 'post__not_in' to $query_vars.
* 'post__in', 'post__not_in', and 'include_unapproved' to $query_vars.
*
* @param string|array $query_vars
* @return int|array
@ -271,6 +271,7 @@ class WP_Comment_Query {
'author_email' => '',
'author__in' => '',
'author__not_in' => '',
'include_unapproved' => '',
'fields' => '',
'ID' => '',
'comment__in' => '',
@ -333,16 +334,48 @@ class WP_Comment_Query {
return $cache;
}
// Assemble clauses related to 'comment_approved'.
$approved_clauses = array();
$status = $this->query_vars['status'];
if ( 'hold' == $status ) {
$approved = "comment_approved = '0'";
$approved_clauses[] = "comment_approved = '0'";
} elseif ( 'approve' == $status ) {
$approved = "comment_approved = '1'";
$approved_clauses[] = "comment_approved = '1'";
} elseif ( ! empty( $status ) && 'all' != $status ) {
$approved = $wpdb->prepare( "comment_approved = %s", $status );
$approved_clauses[] = $wpdb->prepare( "comment_approved = %s", $status );
} else {
$approved = "( comment_approved = '0' OR comment_approved = '1' )";
$approved_clauses[] = "( comment_approved = '0' OR comment_approved = '1' )";
}
// User IDs or emails whose unapproved comments are included, regardless of $status.
if ( ! empty( $this->query_vars['include_unapproved'] ) ) {
$include_unapproved = $this->query_vars['include_unapproved'];
// Accepts arrays or comma-separated strings.
if ( ! is_array( $include_unapproved ) ) {
$include_unapproved = preg_split( '/[\s,]+/', $include_unapproved );
}
$unapproved_ids = $unapproved_emails = array();
foreach ( $include_unapproved as $unapproved_identifier ) {
// Numeric values are assumed to be user ids.
if ( is_numeric( $unapproved_identifier ) ) {
$approved_clauses[] = $wpdb->prepare( "( user_id = %d AND comment_approved = '0' )", $unapproved_identifier );
// Otherwise we match against email addresses.
} else {
$approved_clauses[] = $wpdb->prepare( "( comment_author_email = %s AND comment_approved = '0' )", $unapproved_identifier );
}
}
}
// Collapse comment_approved clauses into a single OR-separated clause.
if ( 1 === count( $approved_clauses ) ) {
$approved = $approved_clauses[0];
} else {
$approved = '( ' . implode( ' OR ', $approved_clauses ) . ' )';
}
$order = ( 'ASC' == strtoupper( $this->query_vars['order'] ) ) ? 'ASC' : 'DESC';
if ( ! empty( $this->query_vars['orderby'] ) ) {