我正在尝试自定义媒体浏览器的模板（当单击“编辑帖子”页面中的“添加媒体”按钮时），方法是在每个缩略图上添加带有文件名的标题，这样我就不需要选择图像来检查附件详细信息面板上的文件名。

到目前为止，我所做的是以下所述解决方案的一个版本：https://stackoverflow.com/a/25948448/8717608

我使用的是“tmpl附件”模板，来自媒体模板的第506行。php，这正是我需要定制的：https://github.com/WordPress/WordPress/blob/master/wp-includes/media-template.php

通过单击添加媒体按钮，我原本希望在图像底部的黑色背景中看到所有的拇指及其文件名，但什么都没有发生。看来我遗漏了什么，如果能帮我找出问题所在，我将不胜感激。

add_action( \'wp_enqueue_media\', \'add_media_overrides\' );
function add_media_overrides() {
    add_action( \'admin_footer-post.php\', \'override_media_templates\' );
}
function override_media_templates(){
    ?> 
    <script type="text/html" id="tmpl-attachment_custom">
        <div class="attachment-preview js--select-attachment type-{{ data.type }} subtype-{{ data.subtype }} {{ data.orientation }}">
            <div class="thumbnail">
                <# if ( data.uploading ) { #>
                    <div class="media-progress-bar"><div style="width: {{ data.percent }}%"></div></div>
                <# } else if ( \'image\' === data.type && data.sizes ) { #>
                    <div class="centered">
                        <img src="{{ data.size.url }}" draggable="false" alt=""  style="height: 90%; transform: translate(-50%,-55%);"/>
                        <div style="
                            transform: translate(-50%,-100%);
                            background-color: black;
                            color: white;
                            margin-top: 50%;
                            font-size: 80%;
                            z-index: 9999;
                            position: relative;
                            vertical-align: middle;
                        ">{{ data.filename }}</div>
                    </div>
                <# } else { #>
                    <div class="centered">
                        <# if ( data.image && data.image.src && data.image.src !== data.icon ) { #>
                            <img src="{{ data.image.src }}" class="thumbnail" draggable="false" alt="" />
                        <# } else if ( data.sizes && data.sizes.medium ) { #>
                            <img src="{{ data.sizes.medium.url }}" class="thumbnail" draggable="false" alt="" />
                        <# } else { #>
                            <img src="{{ data.icon }}" class="icon" draggable="false" alt="" />
                        <# } #>
                    </div>
                    <div class="filename">
                        <div>{{ data.filename }}</div>
                    </div>
                <# } #>
            </div>
            <# if ( data.buttons.close ) { #>
                <button type="button" class="button-link attachment-close media-modal-icon"><span class="screen-reader-text"><?php _e( \'Remove\' ); ?></span></button>
            <# } #>
        </div>
        <# if ( data.buttons.check ) { #>
            <button type="button" class="check" tabindex="-1"><span class="media-modal-icon"></span><span class="screen-reader-text"><?php _e( \'Deselect\' ); ?></span></button>
        <# } #>
        <#
        var maybeReadOnly = data.can.save || data.allowLocalEdits ? \'\' : \'readonly\';
        if ( data.describe ) {
            if ( \'image\' === data.type ) { #>
                <input type="text" value="{{ data.caption }}" class="describe" data-setting="caption"
                    placeholder="<?php esc_attr_e( \'Caption this image&hellip;\' ); ?>" {{ maybeReadOnly }} />
            <# } else { #>
                <input type="text" value="{{ data.title }}" class="describe" data-setting="title"
                    <# if ( \'video\' === data.type ) { #>
                        placeholder="<?php esc_attr_e( \'Describe this video&hellip;\' ); ?>"
                    <# } else if ( \'audio\' === data.type ) { #>
                        placeholder="<?php esc_attr_e( \'Describe this audio file&hellip;\' ); ?>"
                    <# } else { #>
                        placeholder="<?php esc_attr_e( \'Describe this media file&hellip;\' ); ?>"
                    <# } #> {{ maybeReadOnly }} />
            <# }
        } #>
    </script>
    <script>
        jQuery(document).ready( function($) {
            if( typeof wp.media.view.Attachment != \'undefined\' ){
                wp.media.view.Attachment.prototype.template = wp.media.template( \'attachment-custom\' );
            }
        });
    </script>
    <?php
}