使用comment_form()自定义WordPress评论表单
WordPress 的 comment_form() 函数可以用来来构建评论表单,下面简单讲解一下 comment_form() 的使用方法,希望能帮助大家自定义评论表单。
调用 comment_form()
如果你要在主题中调用评论表单,只需要在使用下面简单的代码即可:
<?php comment_form(); ?>
就像wordpress官方的主题 twentyfourteen 的 comments.php 文件的倒数第2行看到一样:
<?php /** * The template for displaying Comments * * The area of the page that contains comments and the comment form. * * @package WordPress * @subpackage Twenty_Fourteen * @since Twenty Fourteen 1.0 */ /* * If the current post is protected by a password and the visitor has not yet * entered the password we will return early without loading the comments. */ if ( post_password_required() ) { return; } ?> <div id="comments" class="comments-area"> <?php if ( have_comments() ) : ?> <h2 class="comments-title"> <?php printf( _n( 'One thought on “%2$s”', '%1$s thoughts on “%2$s”', get_comments_number(), 'twentyfourteen' ), number_format_i18n( get_comments_number() ), get_the_title() ); ?> </h2> <?php if ( get_comment_pages_count() > 1 && get_option( 'page_comments' ) ) : ?> <nav id="comment-nav-above" class="navigation comment-navigation" role="navigation"> <h1 class="screen-reader-text"><?php _e( 'Comment navigation', 'twentyfourteen' ); ?></h1> <div class="nav-previous"><?php previous_comments_link( __( '← Older Comments', 'twentyfourteen' ) ); ?></div> <div class="nav-next"><?php next_comments_link( __( 'Newer Comments →', 'twentyfourteen' ) ); ?></div> </nav><!-- #comment-nav-above --> <?php endif; // Check for comment navigation. ?> <ol class="comment-list"> <?php wp_list_comments( array( 'style' => 'ol', 'short_ping' => true, 'avatar_size'=> 34, ) ); ?> </ol><!-- .comment-list --> <?php if ( get_comment_pages_count() > 1 && get_option( 'page_comments' ) ) : ?> <nav id="comment-nav-below" class="navigation comment-navigation" role="navigation"> <h1 class="screen-reader-text"><?php _e( 'Comment navigation', 'twentyfourteen' ); ?></h1> <div class="nav-previous"><?php previous_comments_link( __( '← Older Comments', 'twentyfourteen' ) ); ?></div> <div class="nav-next"><?php next_comments_link( __( 'Newer Comments →', 'twentyfourteen' ) ); ?></div> </nav><!-- #comment-nav-below --> <?php endif; // Check for comment navigation. ?> <?php if ( ! comments_open() ) : ?> <p class="no-comments"><?php _e( 'Comments are closed.', 'twentyfourteen' ); ?></p> <?php endif; ?> <?php endif; // have_comments() ?> <?php comment_form(); ?> </div><!-- #comments -->
comment_form() 参数
<?php comment_form($args, $post_id); ?>
- $args:comment_form() 的输出配置参数,为一个关联数组,配置项非常丰富,下面我们会详细说明。
- $post_id:文章id,默认为空,即当前id
- $args的默认配置:
$defaults = array( 'fields' => apply_filters( 'comment_form_default_fields', $fields ), 'comment_field' => '<p class="comment-form-comment"><label for="comment">' . _x( 'Comment', 'noun' ) . '</label><textarea id="comment" name="comment" cols="45" rows="8" aria-required="true"></textarea></p>', 'must_log_in' => '<p class="must-log-in">' . sprintf( __( 'You must be <a href="%s">logged in</a> to post a comment.' ), wp_login_url( apply_filters( 'the_permalink', get_permalink( $post_id ) ) ) ) . '</p>', 'logged_in_as' => '<p class="logged-in-as">' . sprintf( __( 'Logged in as <a href="%1$s">%2$s</a>. <a href="%3$s" title="Log out of this account">Log out?</a>' ), admin_url( 'profile.php' ), $user_identity, wp_logout_url( apply_filters( 'the_permalink', get_permalink( $post_id ) ) ) ) . '</p>', 'comment_notes_before' => '<p class="comment-notes">' . __( 'Your email address will not be published.' ) . ( $req ? $required_text : '' ) . '</p>', 'comment_notes_after' => '<p class="form-allowed-tags">' . sprintf( __( 'You may use these <abbr title="HyperText Markup Language">HTML</abbr> tags and attributes: %s' ), ' <code>' . allowed_tags() . '</code>' ) . '</p>', 'id_form' => 'commentform', 'id_submit' => 'submit', 'title_reply' => __( 'Leave a Reply' ), 'title_reply_to' => __( 'Leave a Reply to %s' ), 'cancel_reply_link' => __( 'Cancel reply' ), 'label_submit' => __( 'Post Comment' ), );
自定义评论表单
删除表单字段
如果我们想要删除网址字段,只需要打开主题的 functions.php 文件,添加以下代码:
add_filter('comment_form_default_fields', 'mytheme_remove_url'); function mytheme_remove_url($arg) { $arg['url'] = ''; return $arg; }
保存后刷新页面,你就会看到“url”输入框已经不存在了。
新增表单字段
假设我们要添加一个 QQ 字段,同样在主题的 functions.php 添加下面的代码即可:
function my_fields($fields) { $fields['qq'] = '<p class="comment-form-qq">' . '<label for="qq">'.__('QQ').'</label> ' . '<input id="qq" name="qq" type="text" value="' . esc_attr( $commenter['comment_qq'] ) . '" size="30" /></p>'; return $fields; } add_filter('comment_form_default_fields','my_fields');
刷新页面,即可看到新增的表单。
comment_form() 钩子
评论表单同时还带了不少钩子,让你可以在喜欢的位置添加你想要的内容,具体钩子如下:
- comment_form_before
- comment_form_must_log_in_after
- comment_form_top
- comment_form_logged_in_after
- comment_notes_before
- comment_form_before_fields
- comment_form_field_{$name}
- comment_form_after_fields
- comment_form_field_comment
- comment_form (action hook)
- comment_form_after
- comment_form_comments_closed
更多信息,请参考官方文档:http://codex.wordpress.org/Function_Reference/comment_form