使用高级自定义字段的Wordpress自定义字段

Question

我在修改我安装的WordPress流行帖子插件时遇到了一些问题。

它可以选择从自定义字段获取缩略图，我已将其输入为“image_facebook”。但是缩略图没有显示。

在检查代码时，我发现imgsrc有post id而不是返回图像URL。

"<img src="5438" width="135" height="135" alt="Alt text" border="0" />"

我已经把问题缩小到我安装的另一个插件http://wordpress.org/plugins/advanced-custom-fields/ 当它处于活动状态时，我必须使用“thefield（）”来获取自定义字段内容，而不是常规的WordPress“get\u post\u meta”，这里有文档记录http://www.advancedcustomfields.com/resources/functions/the_field/

我需要在WordPress popular posts文件中编辑以下代码，以使用_field（）函数。WordPress-popular-posts.php中的代码表示：-

                    // POST THUMBNAIL
                if ($instance['thumbnail']['active'] && $this->thumb) {

                    $tbWidth = $instance['thumbnail']['width'];
                    $tbHeight = $instance['thumbnail']['height'];

                    $thumb = "<a href=\"". $permalink ."\" title=\"{$title}\" target=\"".$this->user_ops['tools']['link']['target']."\">";

                    if ( $this->user_ops['tools']['thumbnail']['source'] == "custom_field" ) { // get image from custom field

                        $path = get_post_meta($p->id, $this->user_ops['tools']['thumbnail']['field'], true);

                        if ( $path != "" ) {

                            if ( $this->user_ops['tools']['thumbnail']['resize'] ) {

                                $thumb .= $this->get_img( $p->id, array($tbWidth, $tbHeight), $this->user_ops['tools']['thumbnail']['source'] );

                            } else {
                                $thumb .= "<img src=\"{$path}\" width=\"{$tbWidth}\" height=\"{$tbHeight}\" alt=\"{$title}\" border=\"0\" />";
                            }

                        } else {
                            $thumb .= "<img src=\"". $this->default_thumbnail ."\" alt=\"{$title}\" border=\"0\" width=\"{$tbWidth}\" height=\"{$tbHeight}\" />";
                        }

                    } else { // get image from post / Featured Image
                        $thumb .= $this->get_img( $p->id, array($tbWidth, $tbHeight), $this->user_ops['tools']['thumbnail']['source'] );
                    }

                    //$thumb .= "</a>";
                }

在我的主题文件中，我可以通过以下代码检索图像URL：-

<img src="<?php echo get_field('image_facebook'); ?>" alt="<?php the_title(); ?>" class="postImg" />

请帮我把这个函数放到上面的插件代码中。

使现代化

好的，使用下面的代码，图像URL被获取，但它为所有10个热门帖子获取相同的图像URL。

                    // POST THUMBNAIL
                if ($instance['thumbnail']['active'] && $this->thumb) {
                    $my_image = get_field('image_facebook');
                    $my_title = get_the_title();
                    $tbWidth = $instance['thumbnail']['width'];
                    $tbHeight = $instance['thumbnail']['height'];

                    $thumb = "<a href=\"". $permalink ."\" title=\"{$title}\" target=\"".$this->user_ops['tools']['link']['target']."\">";

                    if ( $this->user_ops['tools']['thumbnail']['source'] == "custom_field" ) { // get image from custom field

                        $path = get_post_meta($p->id, $this->user_ops['tools']['thumbnail']['field'], true);

                        if ( $path != "" ) {

                            if ( $this->user_ops['tools']['thumbnail']['resize'] ) {

                                $thumb .= $this->get_img( $p->id, array($tbWidth, $tbHeight), $this->user_ops['tools']['thumbnail']['source'] );

                            } else {
                                //$thumb .= "<img src=\"{$path}\" width=\"{$tbWidth}\" height=\"{$tbHeight}\" alt=\"{$title}\" border=\"0\" />";
                                $thumb .= "<img src=\"" . $my_image . "\" width=\"{$tbWidth}\" height=\"{$tbHeight}\" alt=\"" . $my_title . "\" border=\"0\" />";
                                }

                        } else {
                            $thumb .= "<img src=\"". $this->default_thumbnail ."\" alt=\"{$title}\" border=\"0\" width=\"{$tbWidth}\" height=\"{$tbHeight}\" />";
                        }

                    } else { // get image from post / Featured Image
                        $thumb .= $this->get_img( $p->id, array($tbWidth, $tbHeight), $this->user_ops['tools']['thumbnail']['source'] );
                    }

                    //$thumb .= "</a>";
                }

Answer 1

如果没有用，我会试试这个。请记住，我不明白你的插件是如何与ACF交互的。首先，我要设置变量：

$my_image = get_field('image_facebook');
$my_title = get_the_title();

然后，我将用您运行的ACF代码替换美元拇指的每个实例。=，只是为了测试，像这样：

$thumb .= "<img src=\"" . $my_image . "\" alt=\"" . $my_title . "\" class=\"postImg\" />";