{"id":3799,"date":"2014-08-18T13:48:24","date_gmt":"2014-08-18T13:48:24","guid":{"rendered":"http:\/\/tapchicntt.com\/?p=3799"},"modified":"2014-08-18T13:55:59","modified_gmt":"2014-08-18T13:55:59","slug":"hien-thi-thumbnail-o-trang-quan-ly-bai-viet","status":"publish","type":"post","link":"https:\/\/tapchicntt.com\/hien-thi-thumbnail-o-trang-quan-ly-bai-viet\/","title":{"rendered":"[WordPress] Hi\u1ec3n th\u1ecb thumbnail \u1edf trang qu\u1ea3n l\u00fd b\u00e0i vi\u1ebft"},"content":{"rendered":"<p>Trong b\u00e0i vi\u1ebft n\u00e0y ch\u00fang t\u00f4i s\u1ebd chia s\u1ebb c\u00f9ng c\u00e1c b\u1ea1n \u0111o\u1ea1n code th\u00eam h\u00ecnh \u1ea3nh \u0111\u1ea1i di\u1ec7n trong trang qu\u1ea3n l\u00fd b\u00e0i vi\u1ebft.<\/p>\n<p><a href=\"https:\/\/docs.google.com\/uc?id=0B3Q6txmPpUsybXZDVWNnRFAxUkE&amp;export=view\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/docs.google.com\/uc?id=0B3Q6txmPpUsybXZDVWNnRFAxUkE&amp;export=view\" alt=\"hien-thi-thumbnail-o-trang-quan-ly-bai-viet-01.png\" width=\"650\" height=\"320\" class=\"alignnone size-full wp-image-3801\" \/><\/a><\/p>\n<p>M\u1edf file functions.php v\u00e0 ch\u00e8n \u0111o\u1ea1n code sau v\u00e0o:<\/p>\n<pre class=\"brush: php; title: ; notranslate\" title=\"\">\r\n\r\n\/\/ ====================================================\r\n\/\/ Add Thumbnails in Manage Posts\/Pages List\r\n\/\/ ====================================================\r\n\r\n\r\nfunction AddThumbColumn($cols) {\r\n\r\n\t $cols&#x5B;'thumbnail'] = __('Thumbnail');\r\n\r\n\treturn $cols;\r\n}\r\n\r\n function AddThumbValue($column_name, $post_id) {\r\n\r\n\t$width = (int)50;\r\n\t$height = (int)50;\r\n\r\n\tif ( 'thumbnail' == $column_name ) {\r\n\t\t \/\/ thumbnail of WP 2.9\r\n\r\n\t\t$thumbnail_id = get_post_meta( $post_id, '_thumbnail_id', true );\r\n\t\t\/\/ image from gallery\r\n\r\n\t\t$attachments = get_children( array('post_parent' =&gt; $post_id, 'post_type' =&gt; 'attachment', 'post_mime_type' =&gt; 'image') );\r\n\t\t\r\n\t\tif ($thumbnail_id)\r\n\t\t \t\r\n\t\t \t$thumb = wp_get_attachment_image($thumbnail_id, array($width, $height),true);\r\n\r\n\t\telseif ($attachments) {\r\n\r\n\t\t\tforeach ( $attachments as $attachment_id =&gt; $attachment ) {\r\n\t\t\t\t $thumb = wp_get_attachment_image( $attachment_id, array($width, $height), true );\r\n\t\t\t}\r\n\t\t}\r\n\t\t\r\n\t\tif ( isset($thumb) &amp;&amp; $thumb ) {\r\n\r\n\t\t\techo $thumb;\r\n\r\n\t\t} else {\r\n\r\n\t\t\t echo __('None');\r\n\t\t}\r\n\t}\r\n}\r\n\r\n\/\/ for posts\r\n\r\nadd_filter('manage_posts_columns','AddThumbColumn');\r\n\r\nadd_action('manage_posts_custom_column','AddThumbValue',10, 2);\r\n\r\n\/\/ for pages\r\n\r\nadd_filter('manage_pages_columns','AddThumbColumn');\r\n\r\nadd_action('manage_pages_custom_column','AddThumbValue',10,2);\r\n\r\n<\/pre>\n<p>Ch\u00fang ta s\u1ebd \u0111\u01b0\u1ee3c trang qu\u1ea3n l\u00fd b\u00e0i vi\u1ebft nh\u01b0 sau:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/docs.google.com\/uc?id=0B3Q6txmPpUsyVEx2UEF6WHNJWHM&amp;export=view\" alt=\"hien-thi-thumbnail-o-trang-quan-ly-bai-viet-02.png\" width=\"650\" height=\"291\" class=\"aligncenter size-full wp-image-3802\" \/><\/p>\n<p>Ch\u00fac c\u00e1c b\u1ea1n th\u00e0nh c\u00f4ng!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trong b\u00e0i vi\u1ebft n\u00e0y ch\u00fang t\u00f4i s\u1ebd chia s\u1ebb c\u00f9ng c\u00e1c b\u1ea1n \u0111o\u1ea1n code th\u00eam h\u00ecnh \u1ea3nh \u0111\u1ea1i di\u1ec7n trong [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[143],"tags":[],"class_list":["post-3799","post","type-post","status-publish","format-standard","hentry","category-thu-thuat-wordpress"],"views":396,"_links":{"self":[{"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/posts\/3799","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/comments?post=3799"}],"version-history":[{"count":0,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/posts\/3799\/revisions"}],"wp:attachment":[{"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/media?parent=3799"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/categories?post=3799"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/tags?post=3799"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}