特色图像 一般是用来作为文章的缩略图的,有些WordPress主题必须为每篇文章设置特色图像才能显示缩略图。如果你的网站后台是多人写作,或者允许投稿,那么你最好给“特色图像”加点说明文字,告诉投稿者,这是做什么用的,如下图:

要实现这个功能,只需将下面的代码添加到主题的 functions.php 即可:
/**
* WordPress 给“特色图像”模块添加说明文字
* https://www.wpdaxue.com/add-featured-image-instruction.html
*/
add_filter( 'admin_post_thumbnail_html', 'add_featured_image_instruction');
function add_featured_image_instruction( $content ) {
return $content .= '<p>特色图像将用来作为这篇文章的缩略图,请务必为文章选择一个特色图像。</p>';
} |
/**
* WordPress 给“特色图像”模块添加说明文字
* https://www.wpdaxue.com/add-featured-image-instruction.html
*/
add_filter( 'admin_post_thumbnail_html', 'add_featured_image_instruction');
function add_featured_image_instruction( $content ) {
return $content .= '<p>特色图像将用来作为这篇文章的缩略图,请务必为文章选择一个特色图像。</p>';
}
要确保必须设置特色图像,请参考:WordPress发布文章前强制要求上传特色图像
来源:
https://www.wpdaxue.com/add-featured-image-instruction.html
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