Ch\u00e0o c\u00e1c b\u1ea1n, trong b\u00e0i h\u01b0\u1edbng d\u1eabn tr\u01b0\u1edbc ch\u00fang t\u00f4i \u0111\u00e3 h\u01b0\u1edbng d\u1eabn c\u00e1c b\u1ea1n c\u00e1ch s\u1eed d\u1ee5ng v\u00e0 l\u1ea5y d\u1eef li\u1ec7u c\u1ee7a Custom Field trong WordPress (WP).<\/p>\n\n\n\n\n\n\n\n
![\"\"](\"http:\/\/upload.lyminhhoang.com\/repository\/2017\/su-dung-custom-field-cua-wordpress\/su-dung-custom-field-cua-wordpress-01.jpg\")
Nh\u01b0ng v\u1edbi c\u00e1c th\u00eam Custom Field \u0111\u00f3 b\u1ea1n ph\u1ea3i ch\u1ecdn “Name” v\u00e0 th\u00eam gi\u00e1 tr\u1ecb. B\u00e0i vi\u1ebft n\u00e0y ch\u00fang t\u00f4i s\u1ebd h\u01b0\u1edbng d\u1eabn c\u00e1c b\u1ea1n t\u1ea1o Meta Box ch\u00e8n d\u1eef li\u1ec7u cho Custom Field.<\/p>\n\n\n\n
Tr\u01b0\u1edbc ti\u00ean b\u1ea1n m\u1edf file file Ch\u00fac c\u00e1c b\u1ea1n th\u00e0nh c\u00f4ng!<\/p>\n","protected":false},"excerpt":{"rendered":" Ch\u00e0o c\u00e1c b\u1ea1n, trong b\u00e0i h\u01b0\u1edbng d\u1eabn tr\u01b0\u1edbc ch\u00fang t\u00f4i \u0111\u00e3 h\u01b0\u1edbng d\u1eabn c\u00e1c b\u1ea1n c\u00e1ch s\u1eed d\u1ee5ng v\u00e0 l\u1ea5y […]<\/p>\n","protected":false},"author":6,"featured_media":6979,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[137],"tags":[],"class_list":["post-3188","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-wordpress"],"views":435,"_links":{"self":[{"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/posts\/3188","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=3188"}],"version-history":[{"count":2,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/posts\/3188\/revisions"}],"predecessor-version":[{"id":8051,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/posts\/3188\/revisions\/8051"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/media\/6979"}],"wp:attachment":[{"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/media?parent=3188"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/categories?post=3188"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/tags?post=3188"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}functions.php<\/code> v\u00e0 th\u00eam \u0111o\u1ea1n code sau:<\/p>\n\n\n\n\/* Meta Post ----------------*\/\n\n$post_in_tapchicntt =\n array(\n "price" =>\n\t array(\n\t\t "name" => "price",\n\t\t "type" => "text",\n\t\t "std" => "",\n\t\t "title" => "Price",\n\t\t "description" => "Gi\u00e1 B\u00e1n"\n\t),\n\t"discount" =>\n\t array(\n\t\t "name" => "discount",\n\t\t "type" => "text",\n\t\t "std" => "",\n\t\t "title" => "Discount",\n\t\t "description" => "Gi\u00e1 Gi\u1ea3m"\n\t),\n\t"sku" =>\n\t array(\n\t\t "name" => "sku",\n\t\t "type" => "text",\n\t\t "std" => "",\n\t\t "title" => "Code Product (SKU)",\n\t\t "description" => ""\n\t)\n );\n\nfunction post_in_tapchicntt() {\n global $post, $post_in_tapchicntt;\n $output = '<style>\n \t\t\t\tlabel#tutorial_custom { display: block; font-weight: bold; padding: 5px;}\n\t\t\t\tinput.tutorial_custom { padding: 5px}\n \t\t\t<\/style>';\n foreach($post_in_tapchicntt as $meta_box) {\n $meta_box_value = get_post_meta($post->ID, $meta_box['name'], true);\n\n if($meta_box_value == "")\n $meta_box_value = $meta_box['std'];\n\n\tif ($meta_box['type'] == 'text' ){\n\t\t$output .= '<input type="hidden" name="'.$meta_box['name'].'_noncename" id="'.$meta_box['name'].'_noncename" value="'.wp_create_nonce( plugin_basename(__FILE__) ).'" \/>';\n\t\t$output .= '<label id="tutorial_custom" for="'.$meta_box['name'].'">'.$meta_box['title'].'<\/label>';\n\t\t$output .= '<input class="tutorial_custom" type="'.$meta_box['type'].'" name="tutorialblog_'.$meta_box['name'].'" value="'.$meta_box_value.'" width="90%" \/><br \/>';\n\t\t$output .= $meta_box['description'].'<br \/>';\n\t}\n }\n echo $output;\n\n}\n\nfunction create_meta_box() {\n if ( function_exists('add_meta_box') ) {\n add_meta_box( 'new-meta-boxes', 'Th\u00f4ng tin s\u1ea3n ph\u1ea9m', 'post_in_tapchicntt', 'post', 'normal', 'high' );\n }\n}\n\nfunction save_postdata( $post_id ) {\n global $post, $post_in_tapchicntt;\n\n foreach($post_in_tapchicntt as $meta_box) {\n \/\/ Verify\n if ( !wp_verify_nonce( $_POST[$meta_box['name'].'_noncename'], plugin_basename(__FILE__) )) {\n return $post_id;\n }\n\n if ( 'page' == $_POST['post_type'] ) {\n if ( !current_user_can( 'edit_page', $post_id ))\n return $post_id;\n } else {\n if ( !current_user_can( 'edit_post', $post_id ))\n return $post_id;\n }\n\n\t$data = $_POST['tutorialblog_'.$meta_box['name']];\n\n\tif(get_post_meta($post_id, $meta_box['name']) == "")\n\t\tadd_post_meta($post_id, $meta_box['name'], $data, true);\n\telseif($data != get_post_meta($post_id, $meta_box['name'], true))\n\t\tupdate_post_meta($post_id, $meta_box['name'], $data);\n\telseif($data == "")\n\t\tdelete_post_meta($post_id, $meta_box['name'], get_post_meta($post_id, $meta_box['name'], true));\n\t }\n\n}\n\nadd_action('admin_menu', 'create_meta_box');\nadd_action('save_post', 'save_postdata');\n<\/pre><\/div>\n\n\n