在文章列表编辑特色图像,看到这句话大概就知道今天要分享的是什么功能了。
具体效果如下图所示:
这是一个非常实用的功能,它能使我们在WordPress后台编辑文章时方便很多。
如果你的主题不支持缩略图请首先在functions.php中添加
//开启文章缩略图 add_theme_support( 'post-thumbnails' ); 首先我们在后台文章列表添加数组, 复制下面的代码到你的functions.php中。 /* * 添加数组到文章列表 */ add_filter('manage_post_posts_columns', 'lb_featured_image_column'); function lb_featured_image_column( $column_array ) { $column_array = array_slice( $column_array, 0, 1, true ) + array('featured_image' => '特色图像') + array_slice( $column_array, 1, NULL, true ); return $column_array; } /* * 使用钩子完善数组 */ add_action('manage_posts_custom_column', 'lb_render_the_column', 10, 2); function lb_render_the_column( $column_name, $post_id ) { if( $column_name == 'featured_image' ) { if( has_post_thumbnail( $post_id ) ) { $thumb_id = get_post_thumbnail_id( $post_id ); echo '<img data-id="' . $thumb_id . '" src="' . wp_get_attachment_url( $thumb_id ) . '" />'; } else { echo '<img data-id="-1" src="' . get_stylesheet_directory_uri() . '/placeholder.png" />'; } } }
然后,我们添加一些CSS样式来美化数组。
add_action( 'admin_head', 'lb_custom_css' ); function lb_custom_css(){ echo '<style> #featured_image{ width:120px; } td.featured_image.column-featured_image img{ max-width: 100%; height: auto; } /* some styles to make Quick Edit meny beautiful */ #lb_featured_image .title{margin-top:10px;display:block;} #lb_featured_image a.lb_upload_featured_image{ display:inline-block; margin:10px 0 0; } #lb_featured_image img{ display:block; max-width:200px !important; height:auto; } #lb_featured_image .lb_remove_featured_image{ display:none; } </style>'; }
完成以上步骤后,在后台文章就可以查看效果了。
接下来添加JS代码使特色图像可以快速编辑和更新,首先排队加载WordPress默认上传:
add_action( 'admin_enqueue_scripts', 'lb_include_myuploadscript' ); function lb_include_myuploadscript() { if ( ! did_action( 'wp_enqueue_media' ) ) { wp_enqueue_media(); } }
然后在后台文章页面添加快速编辑字段:
add_action('quick_edit_custom_box', 'lb_add_featured_image_quick_edit', 10, 2); function lb_add_featured_image_quick_edit( $column_name, $post_type ) { if ($column_name != 'featured_image') return; echo '<fieldset id="lb_featured_image" class="inline-edit-col-left"> <div class="inline-edit-col"> <span class="title">特色图像</span> <div> <a href="#" rel="external nofollow" rel="external nofollow" class="lb_upload_featured_image">设置特色图像</a> <input type="hidden" name="_thumbnail_id" value="" /> </div> <a href="#" rel="external nofollow" rel="external nofollow" class="lb_remove_featured_image">移除特色图像</a> </div></fieldset>'; }
最后就是更新保存了,添加下面代码即可。
add_action('admin_footer', 'lb_quick_edit_js_update'); function lb_quick_edit_js_update() { global $current_screen; if (($current_screen->id != 'edit-post') || ($current_screen->post_type != 'post')) return; ?><script> jQuery(function($){ $('body').on('click', '.lb_upload_featured_image', function(e){ e.preventDefault(); var button = $(this), custom_uploader = wp.media({ title: '设置特色图像', library : { type : 'image' }, button: { text: '设置特色图像' }, }).on('select', function() { var attachment = custom_uploader.state().get('selection').first().toJSON(); $(button).html('<img src="' + attachment.url + '" />').next().val(attachment.id).parent().next().show(); }).open(); }); $('body').on('click', '.lb_remove_featured_image', function(){ $(this).hide().prev().val('-1').prev().html('设置特色图像'); return false; }); var $wp_inline_edit = inlineEditPost.edit; inlineEditPost.edit = function( id ) { $wp_inline_edit.apply( this, arguments ); var $post_id = 0; if ( typeof( id ) == 'object' ) { $post_id = parseInt( this.getId( id ) ); } if ( $post_id > 0 ) { var $edit_row = $( '#edit-' + $post_id ), $post_row = $( '#post-' + $post_id ), $featured_image = $( '.column-featured_image', $post_row ).html(), $featured_image_id = $( '.column-featured_image', $post_row ).find('img').attr('data-id'); if( $featured_image_id != -1 ) { $( ':input[name="_thumbnail_id"]', $edit_row ).val( $featured_image_id ); // ID $( '.lb_upload_featured_image', $edit_row ).html( $featured_image ); // 图像 HTML $( '.lb_remove_featured_image', $edit_row ).show(); // 移除链接 } } } }); </script> <?php }
这篇WordPress如何在文章列表编辑特色图像的教程到此就结束了,这篇教程由主题笔记原创,本站为转载。
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