Question

comments_template( string $file = '/comments.php',  bool $separate_comments = false )

Load the comment template specified in $file.

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description

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 ‘comments_array’ filter hook with the list of comments and the post ID respectively.

The $file path is passed through a filter hook called ‘comments_template’, which includes the TEMPLATEPATH 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.

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参数

$file

(string) (Optional) The file to load.

Default value: '/comments.php'

$separate_comments

(bool) (Optional) Whether to separate the comments by comment type.

Default value: false

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源代码

File: wp-includes/comment-template.php

function comments_template( $file = '/comments.php', $separate_comments = false ) {
	global $wp_query, $withcomments, $post, $wpdb, $id, $comment, $user_login, $user_ID, $user_identity, $overridden_cpage;

	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,
		'update_comment_meta_cache' => false, // We lazy-load comment meta for performance.
	);

	if ( get_option('thread_comments') ) {
		$comment_args['hierarchical'] = 'threaded';
	} else {
		$comment_args['hierarchical'] = false;
	}

	if ( $user_ID ) {
		$comment_args['include_unapproved'] = array( $user_ID );
	} elseif ( ! empty( $comment_author_email ) ) {
		$comment_args['include_unapproved'] = array( $comment_author_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'];
			}

			$top_level_count = $top_level_query->query( $top_level_args );

			$comment_args['offset'] = ( 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 = STYLESHEETPATH . $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( TEMPLATEPATH . $file ) )
		require( TEMPLATEPATH . $file );
	else // Backward compat code will be removed in a future release
		require( ABSPATH . WPINC . '/theme-compat/comments.php');
}

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更新日志

Version	description
1.5.0	Introduced.

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相关函数

Uses

• wp-includes/comment-template.php: comments_template_query_args
• wp-includes/class-wp-comment-query.php: WP_Comment_Query::__construct()
• wp-includes/formatting.php: esc_url()
• wp-includes/query.php: is_single()
• wp-includes/query.php: is_page()
• wp-includes/query.php: get_query_var()
• wp-includes/query.php: set_query_var()
• wp-includes/plugin.php: apply_filters()
• wp-includes/option.php: get_option()
• wp-includes/comment-template.php: comments_array
• wp-includes/comment-template.php: comments_template
• wp-includes/comment.php: wp_get_current_commenter()
• wp-includes/comment.php: separate_comments()
• wp-includes/comment.php: get_comment_pages_count()
Show 9 more uses Hide more uses

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User Contributed Notes

1. Skip to note content You must log in to vote on the helpfulness of this noteVote results for this note: 4You must log in to vote on the helpfulness of this note Contributed by Codex

   Alternative Comment Template
   On some occasions you may want display your comments differently within your theme. For this you would build an alternate file (ex. short-comments.php) and call it as follows:

   
   <?php comments_template( '/short-comments.php' ); ?> 
   

   The path to the file used for an alternative comments template should be relative to the current theme root directory, and include any subfolders. So if the custom comments template is in a folder inside the theme, it may look like this when called:

   
   <?php comments_template( '/custom-templates/alternative-comments.php' ); ?> 
   
   

Default Usage

<?php comments_template(); ?> 

Use in page.php and single.php

// If comments are open or we have at least one comment, load up the comment template.
if ( comments_open() || get_comments_number() ) :
	comments_template();
endif;