WordPress函数：comments_template
一、函数简介
加载$file中指定的注释模板。（Loads the comment template specified in $file.）二、函数参数
* @param string $file Optional. The file to load. Default '/comments.php'. * @param bool $separate_comments Optional. Whether to separate the comments by comment type. Default false.三、函数案例
四、源代码
/**
* Loads the comment template specified in $file.
*
* Will not display the comments template if not on single post or page, or if
* the post does not have comments.
*
* Uses the WordPress database object to query for the comments. The comments
* are passed through the {@see 'comments_array'} filter hook with the list of comments
* and the post ID respectively.
*
* The `$file` path is passed through a filter hook called {@see 'comments_template'},
* which includes the template directory and $file combined. Tries the $filtered path
* first and if it fails it will require the default comment template from the
* default theme. If either does not exist, then the WordPress process will be
* halted. It is advised for that reason, that the default theme is not deleted.
*
* Will not try to get the comments if the post has none.
*
* @since 1.5.0
*
* @global WP_Query $wp_query WordPress Query object.
* @global WP_Post $post Global post object.
* @global wpdb $wpdb WordPress database abstraction object.
* @global int $id
* @global WP_Comment $comment Global comment object.
* @global string $user_login
* @global string $user_identity
* @global bool $overridden_cpage
* @global bool $withcomments
* @global string $wp_stylesheet_path Path to current theme's stylesheet directory.
* @global string $wp_template_path Path to current theme's template directory.
*
* @param string $file Optional. The file to load. Default '/comments.php'.
* @param bool $separate_comments Optional. Whether to separate the comments by comment type.
* Default false.
*/
function comments_template( $file = '/comments.php', $separate_comments = false ) {
global $wp_query, $withcomments, $post, $wpdb, $id, $comment, $user_login, $user_identity, $overridden_cpage, $wp_stylesheet_path, $wp_template_path;
if ( ! ( is_single() || is_page() || $withcomments ) || empty( $post ) ) {
return;
}
if ( empty( $file ) ) {
$file = '/comments.php';
}
$req = get_option( 'require_name_email' );
/*
* Comment author information fetched from the comment cookies.
*/
$commenter = wp_get_current_commenter();
/*
* The name of the current comment author escaped for use in attributes.
* Escaped by sanitize_comment_cookies().
*/
$comment_author = $commenter['comment_author'];
/*
* The email address of the current comment author escaped for use in attributes.
* Escaped by sanitize_comment_cookies().
*/
$comment_author_email = $commenter['comment_author_email'];
/*
* The URL of the current comment author escaped for use in attributes.
*/
$comment_author_url = esc_url( $commenter['comment_author_url'] );
$comment_args = array(
'orderby' => 'comment_date_gmt',
'order' => 'ASC',
'status' => 'approve',
'post_id' => $post->ID,
'no_found_rows' => false,
);
if ( get_option( 'thread_comments' ) ) {
$comment_args['hierarchical'] = 'threaded';
} else {
$comment_args['hierarchical'] = false;
}
if ( is_user_logged_in() ) {
$comment_args['include_unapproved'] = array( get_current_user_id() );
} else {
$unapproved_email = wp_get_unapproved_comment_author_email();
if ( $unapproved_email ) {
$comment_args['include_unapproved'] = array( $unapproved_email );
}
}
$per_page = 0;
if ( get_option( 'page_comments' ) ) {
$per_page = (int) get_query_var( 'comments_per_page' );
if ( 0 === $per_page ) {
$per_page = (int) get_option( 'comments_per_page' );
}
$comment_args['number'] = $per_page;
$page = (int) get_query_var( 'cpage' );
if ( $page ) {
$comment_args['offset'] = ( $page - 1 ) * $per_page;
} elseif ( 'oldest' === get_option( 'default_comments_page' ) ) {
$comment_args['offset'] = 0;
} else {
// If fetching the first page of 'newest', we need a top-level comment count.
$top_level_query = new WP_Comment_Query();
$top_level_args = array(
'count' => true,
'orderby' => false,
'post_id' => $post->ID,
'status' => 'approve',
);
if ( $comment_args['hierarchical'] ) {
$top_level_args['parent'] = 0;
}
if ( isset( $comment_args['include_unapproved'] ) ) {
$top_level_args['include_unapproved'] = $comment_args['include_unapproved'];
}
/**
* Filters the arguments used in the top level comments query.
*
* @since 5.6.0
*
* @see WP_Comment_Query::__construct()
*
* @param array $top_level_args {
* The top level query arguments for the comments template.
*
* @type bool $count Whether to return a comment count.
* @type string|array $orderby The field(s) to order by.
* @type int $post_id The post ID.
* @type string|array $status The comment status to limit results by.
* }
*/
$top_level_args = apply_filters( 'comments_template_top_level_query_args', $top_level_args );
$top_level_count = $top_level_query->query( $top_level_args );
$comment_args['offset'] = ( (int) ceil( $top_level_count / $per_page ) - 1 ) * $per_page;
}
}
/**
* Filters the arguments used to query comments in comments_template().
*
* @since 4.5.0
*
* @see WP_Comment_Query::__construct()
*
* @param array $comment_args {
* Array of WP_Comment_Query arguments.
*
* @type string|array $orderby Field(s) to order by.
* @type string $order Order of results. Accepts 'ASC' or 'DESC'.
* @type string $status Comment status.
* @type array $include_unapproved Array of IDs or email addresses whose unapproved comments
* will be included in results.
* @type int $post_id ID of the post.
* @type bool $no_found_rows Whether to refrain from querying for found rows.
* @type bool $update_comment_meta_cache Whether to prime cache for comment meta.
* @type bool|string $hierarchical Whether to query for comments hierarchically.
* @type int $offset Comment offset.
* @type int $number Number of comments to fetch.
* }
*/
$comment_args = apply_filters( 'comments_template_query_args', $comment_args );
$comment_query = new WP_Comment_Query( $comment_args );
$_comments = $comment_query->comments;
// Trees must be flattened before they're passed to the walker.
if ( $comment_args['hierarchical'] ) {
$comments_flat = array();
foreach ( $_comments as $_comment ) {
$comments_flat[] = $_comment;
$comment_children = $_comment->get_children(
array(
'format' => 'flat',
'status' => $comment_args['status'],
'orderby' => $comment_args['orderby'],
)
);
foreach ( $comment_children as $comment_child ) {
$comments_flat[] = $comment_child;
}
}
} else {
$comments_flat = $_comments;
}
/**
* Filters the comments array.
*
* @since 2.1.0
*
* @param array $comments Array of comments supplied to the comments template.
* @param int $post_id Post ID.
*/
$wp_query->comments = apply_filters( 'comments_array', $comments_flat, $post->ID );
$comments = &$wp_query->comments;
$wp_query->comment_count = count( $wp_query->comments );
$wp_query->max_num_comment_pages = $comment_query->max_num_pages;
if ( $separate_comments ) {
$wp_query->comments_by_type = separate_comments( $comments );
$comments_by_type = &$wp_query->comments_by_type;
} else {
$wp_query->comments_by_type = array();
}
$overridden_cpage = false;
if ( '' === get_query_var( 'cpage' ) && $wp_query->max_num_comment_pages > 1 ) {
set_query_var( 'cpage', 'newest' === get_option( 'default_comments_page' ) ? get_comment_pages_count() : 1 );
$overridden_cpage = true;
}
if ( ! defined( 'COMMENTS_TEMPLATE' ) ) {
define( 'COMMENTS_TEMPLATE', true );
}
$theme_template = trailingslashit( $wp_stylesheet_path ) . $file;
/**
* Filters the path to the theme template file used for the comments template.
*
* @since 1.5.1
*
* @param string $theme_template The path to the theme template file.
*/
$include = apply_filters( 'comments_template', $theme_template );
if ( file_exists( $include ) ) {
require $include;
} elseif ( file_exists( trailingslashit( $wp_template_path ) . $file ) ) {
require trailingslashit( $wp_template_path ) . $file;
} else { // Backward compat code will be removed in a future release.
require ABSPATH . WPINC . '/theme-compat/comments.php';
}
}
THE END
