[英]Calling function from within functions.php returns unwanted value
当我从我的functions.php文件中调用下面的评论计数function时,即使帖子有评论,我也会得到“0”。 当我从另一个页面模板( <?php echo fb_comment_count(); ?>
)调用 function 时,会显示正确的评论编号。
我尝试调试检查 fb_comment_count function 中 $post 的值,它生成以下内容:
id = 818 id = 818 id = 818 id = 818 id = 818 id = 818 id = 818 id = 818
这是错误的,因为图像所在的每个附件页面的每个 id 都应该不同。 818 是整个图库页面本身的 id。 我想这就是为什么我的评论计数一直为“0”,因为图库页面(id 818)本身没有评论。
为了更好地了解我想要做什么,这里是画廊页面的模板。 这些图像中的每一个都链接到它们各自的附件页面。 里面有数字的白框是评论数。
如果有人能帮我弄清楚如何检索画廊中每张图片的正确评论数,我将不胜感激。 谢谢你。
这是 fb_comment_count function。
// FB Comment Count (by Zack Austin)
function fb_comment_count($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>';
}
}
这是自定义库代码,我在上面调用 fb_comment_count function(距底部约 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 $output;
}
you should call function fb_comment_count($link = 'link') {
and pass in the atachemnt post object so it would look like function fb_comment_count($link = 'link', $post) {
, and remove the global $post
just after.
这应该从生成画廊的 foreach 循环中调用,就在这里:
foreach ( $attachments as $att_id => $attachment )
fb_comment_count('link', $attachment);
另外,您真的应该在 wordpress.stackexchange.com 上发布 wordpress 问题
您可以将 function fb_comment_count 调用为可选变量,这里我将其称为 $id,其中包含附件的 ID(可选,因此不会破坏站点其他区域的 function)。 然后使用该 ID,我们可以使用 get_attachment_link 获取附件页面的 URL,在该页面中,我们将找到附件的注释。 代码应该是这样的:
<?php
// FB Comment Count (by Zack Austin)
// Changes by Bruno Cantuaria (bruno@cantuaria.net.br)
function fb_comment_count($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;
}
?>
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