WordPress近期评论小工具详解

WP不仅提供了近期文章小工具，还给我们提供了近期评论小工具，功能是在网站侧边栏展示我们网站的最新评论，可以指定显示的评论条数。下面我们就来看看WordPress近期评论小工具的相关内容详解。

WordPress近期评论小工具使用介绍

在网站【后台-外观-小工具】中找到近期评论小工具，将它拖到想要展示的侧边栏中。

我们可以设置近期评论小工具的显示标题和显示的评论数量。

这样我们就很简单的在网站中加入了近期评论的功能了。

WordPress近期评论小工具源码介绍

源码位置：wp-includes\widgets\class-wp-widget-recent-comments.php
源代码：(since 4.4.0)

 'widget_recent_comments',
			'description' => __( 'Your site’s most recent comments.' ),
			'customize_selective_refresh' => true,
		);
		parent::__construct( 'recent-comments', __( 'Recent Comments' ), $widget_ops );
		$this->alt_option_name = 'widget_recent_comments';

		if ( is_active_widget( false, false, $this->id_base ) || is_customize_preview() ) {
			add_action( 'wp_head', array( $this, 'recent_comments_style' ) );
		}
	}

 	/**
	 * Outputs the default styles for the Recent Comments widget.
	 *
	 * @since 2.8.0
	 * @access public
	 */
	public function recent_comments_style() {
		/**
		 * Filters the Recent Comments default widget styles.
		 *
		 * @since 3.1.0
		 *
		 * @param bool   $active  Whether the widget is active. Default true.
		 * @param string $id_base The widget ID.
		 */
		if ( ! current_theme_supports( 'widgets' ) // Temp hack #14876
			|| ! apply_filters( 'show_recent_comments_widget_style', true, $this->id_base ) )
			return;
		?>
		
		id;

		$output = '';

		$title = ( ! empty( $instance['title'] ) ) ? $instance['title'] : __( 'Recent Comments' );

		/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */
		$title = apply_filters( 'widget_title', $title, $instance, $this->id_base );

		$number = ( ! empty( $instance['number'] ) ) ? absint( $instance['number'] ) : 5;
		if ( ! $number )
			$number = 5;

		/**
		 * Filters the arguments for the Recent Comments widget.
		 *
		 * @since 3.4.0
		 *
		 * @see WP_Comment_Query::query() for information on accepted arguments.
		 *
		 * @param array $comment_args An array of arguments used to retrieve the recent comments.
		 */
		$comments = get_comments( apply_filters( 'widget_comments_args', array(
			'number'      => $number,
			'status'      => 'approve',
			'post_status' => 'publish'
		) ) );

		$output .= $args['before_widget'];
		if ( $title ) {
			$output .= $args['before_title'] . $title . $args['after_title'];
		}

		$output .= '
';
		if ( is_array( $comments ) && $comments ) {
			// Prime cache for associated posts. (Prime post term cache if we need it for permalinks.)
			$post_ids = array_unique( wp_list_pluck( $comments, 'comment_post_ID' ) );
			_prime_post_caches( $post_ids, strpos( get_option( 'permalink_structure' ), '%category%' ), false );

			foreach ( (array) $comments as $comment ) {
				$output .= '
';
				/* translators: comments widget: 1: comment author, 2: post link */
				$output .= sprintf( _x( '%1$s on %2$s', 'widgets' ),
					'' . get_comment_author_link( $comment ) . '',
					'' . get_the_title( $comment->comment_post_ID ) . ''
				);
				$output .= '
';
			}
		}
		$output .= '
';
		$output .= $args['after_widget'];

		echo $output;
	}

	/**
	 * Handles updating settings for the current Recent Comments widget instance.
	 *
	 * @since 2.8.0
	 * @access public
	 *
	 * @param array $new_instance New settings for this instance as input by the user via
	 *                            WP_Widget::form().
	 * @param array $old_instance Old settings for this instance.
	 * @return array Updated settings to save.
	 */
	public function update( $new_instance, $old_instance ) {
		$instance = $old_instance;
		$instance['title'] = sanitize_text_field( $new_instance['title'] );
		$instance['number'] = absint( $new_instance['number'] );
		return $instance;
	}

	/**
	 * Outputs the settings form for the Recent Comments widget.
	 *
	 * @since 2.8.0
	 * @access public
	 *
	 * @param array $instance Current settings.
	 */
	public function form( $instance ) {
		$title = isset( $instance['title'] ) ? $instance['title'] : '';
		$number = isset( $instance['number'] ) ? absint( $instance['number'] ) : 5;
		?>
		

		

		

		
		
WordPress近期评论小工具的介绍就到这里，后面我们会讲解如何自定义近期评论小工具。

				

				
		

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