Question

当我在我的functions.php文件中调用下面的注释计数函数时，即使帖子有注释，我也会得到“0”。当我从另一个页面模板（<?php echo fb_comment_count(); ?>）调用该函数时，会显示正确的注释编号。

我已经尝试调试以检查fb_comment_count函数中$ post的值，它会生成以下内容：

id = 818 id = 818 id = 818 id = 818 id = 818 id = 818 id = 818 id = 818

这是错误的，因为对于图像所在的每个附件页面，每个ID应该是不同的。 818是整个图库页面本身的ID。我想这就是为什么我一直得到“0”的评论计数，因为画廊页面（id 818）本身没有评论。

为了更好地了解我要做的事情，这里是图库页面的模板。这些图像中的每一个都链接到它们各自的附件页面。内部带有数字的白框是注释计数。

gallery

如果有人可以帮我弄清楚如何为图库中的每个图像检索正确的评论数，我将非常感激。谢谢。

这是fb_comment_count函数。

// FB Comment Count (by Zack Austin)
function fb_comment_count($link = 'link') {
  global $post;
  $url = 'https://graph.facebook.com/';
  $posturl = get_permalink($post->ID);
  $url .= $posturl;

  $filecontent = wp_remote_retrieve_body(wp_remote_get($url, array('sslverify'=>false)));
  $json = json_decode($filecontent);
  $count = $json->comments;
  if ($count == 0 || !isset($count)) {
    $count = 0;
  }

  $comments = $count;
  if ($count == 1) {
    $comments .= '';
  }
  elseif ($count == 0) {
    $comments = '0';
  }
  elseif ($count > 1) {
    $comments .= '';
  }
  if ($link == 'nolink') {
    return $comments;
  }
  else {
    return '<a href="'.$posturl.'#comments" title="Comments for '.$post->post_title.'">'.$comments.'</a>';
  }
}

这是自定义图库代码，我在上面调用fb_comment_count函数（从底部开始约22行）。下面的代码和上面的代码都在我的functions.php文件中。

// Custom Gallery
add_filter( 'post_gallery', 'my_post_gallery', 10, 2 );
function my_post_gallery( $output, $attr) {
    global $post, $wp_locale;

    static $instance = 0;
    $instance++;

    // We're trusting author input, so let's at least make sure it looks like a valid orderby statement
    if ( isset( $attr['orderby'] ) ) {
        $attr['orderby'] = sanitize_sql_orderby( $attr['orderby'] );
        if ( !$attr['orderby'] )
            unset( $attr['orderby'] );
    }

    extract(shortcode_atts(array(
        'order'      => 'ASC',
        'orderby'    => 'menu_order ID',
        'id'         => $post->ID,
        'itemtag'    => 'dl',
        'icontag'    => 'dt',
        'captiontag' => 'dd',
        'columns'    => 3,
        'size'       => 'thumbnail',
        'include'    => '',
        'exclude'    => ''
    ), $attr));

    $id = intval($id);
    if ( 'RAND' == $order )
        $orderby = 'none';

    if ( !empty($include) ) {
        $include = preg_replace( '/[^0-9,]+/', '', $include );
        $_attachments = get_posts( array('include' => $include, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby) );

        $attachments = array();
        foreach ( $_attachments as $key => $val ) {
            $attachments[$val->ID] = $_attachments[$key];
        }
    } elseif ( !empty($exclude) ) {
        $exclude = preg_replace( '/[^0-9,]+/', '', $exclude );
        $attachments = get_children( array('post_parent' => $id, 'exclude' => $exclude, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby) );
    } else {
        $attachments = get_children( array('post_parent' => $id, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby) );
    }

    if ( empty($attachments) )
        return '';

    if ( is_feed() ) {
        $output = "\n";
        foreach ( $attachments as $att_id => $attachment )
            $output .= wp_get_attachment_link($att_id, $size, true) . "\n";
        return $output;
    }

    $itemtag = tag_escape($itemtag);
    $captiontag = tag_escape($captiontag);
    $columns = intval($columns);
    $itemwidth = $columns > 0 ? floor(100/$columns) : 100;
    $float = is_rtl() ? 'right' : 'left';

    $selector = "gallery-{$instance}";

    $output = apply_filters('gallery_style', "
        <style type='text/css'>
            #{$selector} {
                margin: auto;
            }
            #{$selector} .gallery-item {
                float: {$float};
                margin-top: 10px;
                text-align: center;
                width: {$itemwidth}%;           }
            #{$selector} img {
                border: 2px solid #cfcfcf;
            }
            #{$selector} .gallery-caption {
                margin-left: 0;
            }
        </style>
        <!-- see gallery_shortcode() in wp-includes/media.php -->
        <div id='$selector' class='gallery galleryid-{$id}'>");

    $i = 0;
    foreach ( $attachments as $id => $attachment ) {
        $link = isset($attr['link']) && 'file' == $attr['link'] ? wp_get_attachment_link($id, $size, false, false) : wp_get_attachment_link($id, $size, true, false);

        $output .= "<{$itemtag} class='gallery-item'>";
        $output .= "<span class='photos-comment-number-wrap'><span class='comment-number'>". fb_comment_count() ."</span></span>";
        $output .= "
            <{$icontag} class='gallery-icon'>
                $link
            </{$icontag}>";
        if ( $captiontag && trim($attachment->post_excerpt) ) {
            $output .= "
                <{$captiontag} class='gallery-caption'>
                " . wptexturize($attachment->post_excerpt) . "
                </{$captiontag}>";
        }
        $output .= "</{$itemtag}>";
        if ( $columns > 0 && ++$i % $columns == 0 )
            $output .= '<br style="clear: both" />';
    }

    $output .= "
            <br style='clear: both;' />
        </div>\n";

    return $output;
}

更新

// FB Comment Count (by Zack Austin)
function fb_comment_count($link = 'link', $post) {
  $url = 'https://graph.facebook.com/';
  $posturl = get_permalink($post->ID);
  $url .= $posturl;

  $filecontent = wp_remote_retrieve_body(wp_remote_get($url, array('sslverify'=>false)));
  $json = json_decode($filecontent);
  $count = $json->comments;
  if ($count == 0 || !isset($count)) {
    $count = 0;
  }

  $comments = $count;
  if ($count == 1) {
    $comments .= '';
  }
  elseif ($count == 0) {
    $comments = '0';
  }
  elseif ($count > 1) {
    $comments .= '';
  }
  if ($link == 'nolink') {
    return $comments;
  }
  else {
    return '<a href="'.$posturl.'#comments" title="Comments for '.$post->post_title.'">'.$comments.'</a>';
  }
}

// Custom Gallery
add_filter( 'post_gallery', 'my_post_gallery', 10, 2 );
function my_post_gallery( $output, $attr) {
    global $post, $wp_locale;

    static $instance = 0;
    $instance++;

    // We're trusting author input, so let's at least make sure it looks like a valid orderby statement
    if ( isset( $attr['orderby'] ) ) {
        $attr['orderby'] = sanitize_sql_orderby( $attr['orderby'] );
        if ( !$attr['orderby'] )
            unset( $attr['orderby'] );
    }

    extract(shortcode_atts(array(
        'order'      => 'ASC',
        'orderby'    => 'menu_order ID',
        'id'         => $post->ID,
        'itemtag'    => 'dl',
        'icontag'    => 'dt',
        'captiontag' => 'dd',
        'columns'    => 3,
        'size'       => 'thumbnail',
        'include'    => '',
        'exclude'    => ''
    ), $attr));

    $id = intval($id);
    if ( 'RAND' == $order )
        $orderby = 'none';

    if ( !empty($include) ) {
        $include = preg_replace( '/[^0-9,]+/', '', $include );
        $_attachments = get_posts( array('include' => $include, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby) );

        $attachments = array();
        foreach ( $_attachments as $key => $val ) {
            $attachments[$val->ID] = $_attachments[$key];
        }
    } elseif ( !empty($exclude) ) {
        $exclude = preg_replace( '/[^0-9,]+/', '', $exclude );
        $attachments = get_children( array('post_parent' => $id, 'exclude' => $exclude, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby) );
    } else {
        $attachments = get_children( array('post_parent' => $id, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby) );
    }

    if ( empty($attachments) )
        return '';

    if ( is_feed() ) {
        $output = "\n";
        foreach ( $attachments as $att_id => $attachment )
            $output .= wp_get_attachment_link($att_id, $size, true) . "\n";
        return $output;
    }

    $itemtag = tag_escape($itemtag);
    $captiontag = tag_escape($captiontag);
    $columns = intval($columns);
    $itemwidth = $columns > 0 ? floor(100/$columns) : 100;
    $float = is_rtl() ? 'right' : 'left';

    $selector = "gallery-{$instance}";

    $output = apply_filters('gallery_style', "
        <style type='text/css'>
            #{$selector} {
                margin: auto;
            }
            #{$selector} .gallery-item {
                float: {$float};
                margin-top: 10px;
                text-align: center;
                width: {$itemwidth}%;           }
            #{$selector} img {
                border: 2px solid #cfcfcf;
            }
            #{$selector} .gallery-caption {
                margin-left: 0;
            }
        </style>
        <!-- see gallery_shortcode() in wp-includes/media.php -->
        <div id='$selector' class='gallery galleryid-{$id}'>");

    $i = 0;
    foreach ( $attachments as $att_id => $attachment ) {
        $link = isset($attr['link']) && 'file' == $attr['link'] ? wp_get_attachment_link($id, $size, false, false) : wp_get_attachment_link($id, $size, true, false);

        $output .= "<{$itemtag} class='gallery-item'>";
        $output .= "<span class='photos-comment-number-wrap'><span class='comment-number'>". fb_comment_count('link', $attachment) ."</span></span>";
        $output .= "
            <{$icontag} class='gallery-icon'>
                $link
            </{$icontag}>";
        $output .= "</{$itemtag}>";
        if ( $columns > 0 && ++$i % $columns == 0 )
            $output .= '<br style="clear: both" />';
    }

    $output .= "
            <br style='clear: both;' />
        </div>\n";

    return $output;
}

Answer 1

你应该调用function fb_comment_count($link = 'link') {并传入atachemnt帖子对象，使其看起来像function fb_comment_count($link = 'link', $post) {，然后删除 global $post。

这应该从生成图库的foreach循环中调用，就在这里：

 foreach ( $attachments as $att_id => $attachment )
       fb_comment_count('link', $attachment);

另外，你应该在wordpress.stackexchange.com上发布wordpress问题

Answer 2

你可以让函数fb_comment_count调用一个可选变量，这里我将它称为$ id，它将包含附件的ID（可选，因此它不会破坏网站其他区域的功能）。然后使用该ID我们可以使用get_attachment_link获取附件页面的URL，在该页面中我们将找到附件的注释。代码应该是这样的：

<?php
// FB Comment Count (by Zack Austin)
// Changes by Bruno Cantuaria (bruno@cantuaria.net.br)
function fb_comment_count($link = 'link', $id = 0) {
    global $post;

    $url = 'https://graph.facebook.com/';
    if ($id > 0)
        $posturl = get_attachment_link($id);
    else
        $posturl = get_permalink($post->ID);
    $url .= $posturl;

    $filecontent = wp_remote_retrieve_body(wp_remote_get($url, array('sslverify'=>false)));
    $json = json_decode($filecontent);
    $count = $json->comments;
    if ($count == 0 || !isset($count)) {
    $count = 0;
    }

    $comments = $count;
    if ($count == 1) {
    $comments .= '';
    }
    elseif ($count == 0) {
    $comments = '0';
    }
    elseif ($count > 1) {
    $comments .= '';
    }
    if ($link == 'nolink') {
    return $comments;
    }
    else {
    return '<a href="'.$posturl.'#comments" title="Comments for '.$post->post_title.'">'.$comments.'</a>';
    }
}

// Custom Gallery
add_filter( 'post_gallery', 'my_post_gallery', 10, 2 );
function my_post_gallery( $output, $attr) {
    global $post, $wp_locale;

    static $instance = 0;
    $instance++;

    // We're trusting author input, so let's at least make sure it looks like a valid orderby statement
    if ( isset( $attr['orderby'] ) ) {
        $attr['orderby'] = sanitize_sql_orderby( $attr['orderby'] );
        if ( !$attr['orderby'] )
            unset( $attr['orderby'] );
    }

    extract(shortcode_atts(array(
        'order'      => 'ASC',
        'orderby'    => 'menu_order ID',
        'id'         => $post->ID,
        'itemtag'    => 'dl',
        'icontag'    => 'dt',
        'captiontag' => 'dd',
        'columns'    => 3,
        'size'       => 'thumbnail',
        'include'    => '',
        'exclude'    => ''
    ), $attr));

    $id = intval($id);
    if ( 'RAND' == $order )
        $orderby = 'none';

    if ( !empty($include) ) {
        $include = preg_replace( '/[^0-9,]+/', '', $include );
        $_attachments = get_posts( array('include' => $include, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby) );

        $attachments = array();
        foreach ( $_attachments as $key => $val ) {
            $attachments[$val->ID] = $_attachments[$key];
        }
    } elseif ( !empty($exclude) ) {
        $exclude = preg_replace( '/[^0-9,]+/', '', $exclude );
        $attachments = get_children( array('post_parent' => $id, 'exclude' => $exclude, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby) );
    } else {
        $attachments = get_children( array('post_parent' => $id, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby) );
    }

    if ( empty($attachments) )
        return '';

    if ( is_feed() ) {
        $output = "\n";
        foreach ( $attachments as $att_id => $attachment )
            $output .= wp_get_attachment_link($att_id, $size, true) . "\n";
        return $output;
    }

    $itemtag = tag_escape($itemtag);
    $captiontag = tag_escape($captiontag);
    $columns = intval($columns);
    $itemwidth = $columns > 0 ? floor(100/$columns) : 100;
    $float = is_rtl() ? 'right' : 'left';

    $selector = "gallery-{$instance}";

    $output = apply_filters('gallery_style', "
        <style type='text/css'>
            #{$selector} {
                margin: auto;
            }
            #{$selector} .gallery-item {
                float: {$float};
                margin-top: 10px;
                text-align: center;
                width: {$itemwidth}%;           }
            #{$selector} img {
                border: 2px solid #cfcfcf;
            }
            #{$selector} .gallery-caption {
                margin-left: 0;
            }
        </style>
        <!-- see gallery_shortcode() in wp-includes/media.php -->
        <div id='$selector' class='gallery galleryid-{$id}'>");

    $i = 0;
    foreach ($attachments as $id => $attachment) {
        $link = isset($attr['link']) && 'file' == $attr['link'] ? wp_get_attachment_link($id, $size, false, false) : wp_get_attachment_link($id, $size, true, false);

        $output .= "<{$itemtag} class='gallery-item'>";
        $output .= "<span class='photos-comment-number-wrap'><span class='comment-number'>". fb_comment_count('link', $id) ."</span></span>";
        $output .= "
            <{$icontag} class='gallery-icon'>
                $link
            </{$icontag}>";
        $output .= "</{$itemtag}>";
        if ( $columns > 0 && ++$i % $columns == 0 )
            $output .= '<br style="clear: both" />';
    }

    $output .= "
            <br style='clear: both;' />
        </div>\n";

    return $output;
}
?>

从functions.php中调用函数会返回不需要的值

2 个答案: