{"id":9627,"date":"2025-04-14T10:52:28","date_gmt":"2025-04-14T03:52:28","guid":{"rendered":"https:\/\/tapchicntt.com\/?p=9627"},"modified":"2025-04-14T11:04:36","modified_gmt":"2025-04-14T04:04:36","slug":"wordpress-huong-dan-cach-su-dung-hooks-filters-va-actions","status":"publish","type":"post","link":"https:\/\/tapchicntt.com\/wordpress-huong-dan-cach-su-dung-hooks-filters-va-actions\/","title":{"rendered":"[WordPress] H\u01b0\u1edbng d\u1eabn c\u00e1ch s\u1eed d\u1ee5ng Hooks (Filters v\u00e0 Actions)"},"content":{"rendered":"\n<p>Hooks (Filters v\u00e0 Actions) l\u00e0 m\u1ed9t b\u01b0\u1edbc quan tr\u1ecdng \u0111\u1ec3 t\u00f9y ch\u1ec9nh v\u00e0 m\u1edf r\u1ed9ng WordPress. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 h\u01b0\u1edbng d\u1eabn chi ti\u1ebft v\u1ec1 Filters v\u00e0 Actions trong WordPress, k\u00e8m theo v\u00ed d\u1ee5 c\u1ee5 th\u1ec3:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. Kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n v\u1ec1 Hooks<\/strong><\/h3>\n\n\n\n<p>Hooks trong WordPress cho ph\u00e9p b\u1ea1n &#8220;ch\u00e8n&#8221; v\u00e0o c\u00e1c \u0111i\u1ec3m c\u1ee5 th\u1ec3 trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd c\u1ee7a WordPress \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c h\u00e0nh \u0111\u1ed9ng t\u00f9y ch\u1ec9nh ho\u1eb7c s\u1eeda \u0111\u1ed5i d\u1eef li\u1ec7u. C\u00f3 hai lo\u1ea1i Hooks ch\u00ednh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Actions (H\u00e0nh \u0111\u1ed9ng):<\/strong> Cho ph\u00e9p b\u1ea1n th\u1ef1c hi\u1ec7n m\u1ed9t h\u00e0nh \u0111\u1ed9ng n\u00e0o \u0111\u00f3 t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3 trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd c\u1ee7a WordPress. V\u00ed d\u1ee5: g\u1eedi email khi m\u1ed9t b\u00e0i vi\u1ebft \u0111\u01b0\u1ee3c xu\u1ea5t b\u1ea3n, th\u00eam m\u1ed9t meta box v\u00e0o trang ch\u1ec9nh s\u1eeda b\u00e0i vi\u1ebft.<\/li>\n\n\n\n<li><strong>Filters (B\u1ed9 l\u1ecdc):<\/strong> Cho ph\u00e9p b\u1ea1n s\u1eeda \u0111\u1ed5i d\u1eef li\u1ec7u t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3 trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd c\u1ee7a WordPress. V\u00ed d\u1ee5: thay \u0111\u1ed5i ti\u00eau \u0111\u1ec1 b\u00e0i vi\u1ebft tr\u01b0\u1edbc khi hi\u1ec3n th\u1ecb, l\u1ecdc n\u1ed9i dung b\u00e0i vi\u1ebft.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. Actions (H\u00e0nh \u0111\u1ed9ng)<\/strong><\/h3>\n\n\n\n<p><strong>2.1. C\u00e1ch s\u1eed d\u1ee5ng <code>add_action()<\/code><\/strong><\/p>\n\n\n\n<p>\u0110\u1ec3 &#8220;ch\u00e8n&#8221; m\u1ed9t h\u00e0m c\u1ee7a b\u1ea1n v\u00e0o m\u1ed9t Action Hook, b\u1ea1n s\u1eed d\u1ee5ng h\u00e0m <code>add_action()<\/code>:<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: php; title: ; notranslate\" title=\"\">\nadd_action( &#039;hook_name&#039;, &#039;your_function_name&#039;, &#x5B;priority], &#x5B;accepted_args] );\n<\/pre><\/div>\n\n\n<ul class=\"wp-block-list\">\n<li><code>hook_name'<\/code>: T\u00ean c\u1ee7a Action Hook m\u00e0 b\u1ea1n mu\u1ed1n ch\u00e8n v\u00e0o. WordPress cung c\u1ea5p r\u1ea5t nhi\u1ec1u Action Hooks kh\u00e1c nhau t\u1ea1i c\u00e1c th\u1eddi \u0111i\u1ec3m kh\u00e1c nhau trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd (v\u00ed d\u1ee5: <code>init<\/code>, <code>wp_head<\/code>, <code>wp_footer<\/code>, <code>save_post<\/code>, <code>publish_post<\/code>).<\/li>\n\n\n\n<li><code>'your_function_name'<\/code>: T\u00ean c\u1ee7a h\u00e0m PHP m\u00e0 b\u1ea1n mu\u1ed1n th\u1ef1c thi khi Action Hook n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi.<\/li>\n\n\n\n<li><code>[priority]<\/code> (t\u00f9y ch\u1ecdn): M\u1ed9t s\u1ed1 nguy\u00ean ch\u1ec9 \u0111\u1ecbnh th\u1ee9 t\u1ef1 \u01b0u ti\u00ean th\u1ef1c thi c\u1ee7a h\u00e0m. Gi\u00e1 tr\u1ecb th\u1ea5p h\u01a1n c\u00f3 ngh\u0129a l\u00e0 h\u00e0m s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c thi s\u1edbm h\u01a1n. Gi\u00e1 tr\u1ecb m\u1eb7c \u0111\u1ecbnh l\u00e0 <code>10<\/code>.<\/li>\n\n\n\n<li><code>[accepted_args]<\/code> (t\u00f9y ch\u1ecdn): S\u1ed1 l\u01b0\u1ee3ng tham s\u1ed1 m\u00e0 h\u00e0m c\u1ee7a b\u1ea1n ch\u1ea5p nh\u1eadn. WordPress s\u1ebd truy\u1ec1n c\u00e1c tham s\u1ed1 t\u01b0\u01a1ng \u1ee9ng khi Action Hook \u0111\u01b0\u1ee3c g\u1ecdi. Gi\u00e1 tr\u1ecb m\u1eb7c \u0111\u1ecbnh l\u00e0 <code>1<\/code>.<\/li>\n<\/ul>\n\n\n\n<p><strong>2.2. V\u00ed d\u1ee5 v\u1ec1 Action<\/strong><\/p>\n\n\n\n<p>Gi\u1ea3 s\u1eed b\u1ea1n mu\u1ed1n th\u00eam m\u1ed9t \u0111o\u1ea1n m\u00e3 HTML v\u00e0o ph\u1ea7n <code>&lt;footer&gt;<\/code> c\u1ee7a trang web. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng Action Hook <code>wp_footer<\/code>:<\/p>\n\n\n\n<p>Trong file <code>functions.php<\/code> c\u1ee7a theme ho\u1eb7c m\u1ed9t plugin t\u00f9y ch\u1ec9nh:<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: php; title: ; notranslate\" title=\"\">\nfunction my_custom_footer_message() {\n    echo &#039;&lt;div style=&quot;text-align: center; padding: 10px; background-color: #f0f0f0;&quot;&gt;&#039;;\n    echo &#039;\u0110\u00e2y l\u00e0 th\u00f4ng b\u00e1o t\u00f9y ch\u1ec9nh \u1edf footer!&#039;;\n    echo &#039;&lt;\/div&gt;&#039;;\n}\nadd_action( &#039;wp_footer&#039;, &#039;my_custom_footer_message&#039; );\n<\/pre><\/div>\n\n\n<p>Khi WordPress x\u1eed l\u00fd v\u00e0 \u0111\u1ebfn ph\u1ea7n <code>wp_footer<\/code>, h\u00e0m <code>my_custom_footer_message()<\/code> s\u1ebd \u0111\u01b0\u1ee3c g\u1ecdi v\u00e0 \u0111o\u1ea1n HTML s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb trong footer c\u1ee7a trang web.<\/p>\n\n\n\n<p><strong>2.3. C\u00e1c Action Hook ph\u1ed5 bi\u1ebfn<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>init<\/code>: \u0110\u01b0\u1ee3c k\u00edch ho\u1ea1t sau khi WordPress \u0111\u00e3 t\u1ea3i c\u00e1c file c\u1ed1t l\u00f5i, plugin v\u00e0 theme, nh\u01b0ng tr\u01b0\u1edbc khi b\u1ea5t k\u1ef3 n\u1ed9i dung n\u00e0o \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn tr\u00ecnh duy\u1ec7t. Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u0103ng k\u00fd post type t\u00f9y ch\u1ec9nh, taxonomy t\u00f9y ch\u1ec9nh, v\u00e0 c\u00e1c h\u00e0nh \u0111\u1ed9ng kh\u1edfi t\u1ea1o kh\u00e1c.<\/li>\n\n\n\n<li><code>wp_head<\/code>: \u0110\u01b0\u1ee3c k\u00edch ho\u1ea1t trong ph\u1ea7n <code>&lt;head&gt;<\/code> c\u1ee7a t\u00e0i li\u1ec7u HTML. Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 th\u00eam c\u00e1c script, style, ho\u1eb7c meta tag t\u00f9y ch\u1ec9nh.<\/li>\n\n\n\n<li><code>wp_footer<\/code>: \u0110\u01b0\u1ee3c k\u00edch ho\u1ea1t ngay tr\u01b0\u1edbc th\u1ebb <code>&lt;\/body&gt;<\/code> c\u1ee7a t\u00e0i li\u1ec7u HTML. Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 th\u00eam c\u00e1c script ho\u1eb7c n\u1ed9i dung t\u00f9y ch\u1ec9nh \u1edf cu\u1ed1i trang.<\/li>\n\n\n\n<li><code>admin_init<\/code>: T\u01b0\u01a1ng t\u1ef1 nh\u01b0 <code>init<\/code> nh\u01b0ng ch\u1ec9 k\u00edch ho\u1ea1t trong trang qu\u1ea3n tr\u1ecb WordPress.<\/li>\n\n\n\n<li><code>admin_menu<\/code>: \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 th\u00eam c\u00e1c m\u1ee5c menu t\u00f9y ch\u1ec9nh v\u00e0o trang qu\u1ea3n tr\u1ecb.<\/li>\n\n\n\n<li><code>save_post<\/code>: \u0110\u01b0\u1ee3c k\u00edch ho\u1ea1t khi m\u1ed9t b\u00e0i vi\u1ebft (bao g\u1ed3m post, page, custom post type) \u0111\u01b0\u1ee3c l\u01b0u ho\u1eb7c c\u1eadp nh\u1eadt.<\/li>\n\n\n\n<li><code>publish_post<\/code>: \u0110\u01b0\u1ee3c k\u00edch ho\u1ea1t khi m\u1ed9t b\u00e0i vi\u1ebft \u0111\u01b0\u1ee3c chuy\u1ec3n sang tr\u1ea1ng th\u00e1i &#8220;\u0110\u00e3 xu\u1ea5t b\u1ea3n&#8221;.<\/li>\n\n\n\n<li><code>wp_enqueue_scripts<\/code>: \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u0103ng k\u00fd v\u00e0 t\u1ea3i c\u00e1c file CSS v\u00e0 JavaScript cho frontend.<\/li>\n\n\n\n<li><code>admin_enqueue_scripts<\/code>: T\u01b0\u01a1ng t\u1ef1 nh\u01b0 <code>wp_enqueue_scripts<\/code> nh\u01b0ng d\u00e0nh cho trang qu\u1ea3n tr\u1ecb.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. Filters (B\u1ed9 l\u1ecdc)<\/strong><\/h3>\n\n\n\n<p><strong>3.1. C\u00e1ch s\u1eed d\u1ee5ng <code>add_filter()<\/code><\/strong><\/p>\n\n\n\n<p>\u0110\u1ec3 &#8220;ch\u00e8n&#8221; m\u1ed9t h\u00e0m c\u1ee7a b\u1ea1n v\u00e0o m\u1ed9t Filter Hook v\u00e0 s\u1eeda \u0111\u1ed5i d\u1eef li\u1ec7u, b\u1ea1n s\u1eed d\u1ee5ng h\u00e0m <code>add_filter()<\/code>:<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: php; title: ; notranslate\" title=\"\">\nadd_filter( &#039;hook_name&#039;, &#039;your_filter_function_name&#039;, &#x5B;priority], &#x5B;accepted_args] );\n<\/pre><\/div>\n\n\n<ul class=\"wp-block-list\">\n<li><code>'hook_name'<\/code>: T\u00ean c\u1ee7a Filter Hook m\u00e0 b\u1ea1n mu\u1ed1n ch\u00e8n v\u00e0o. WordPress cung c\u1ea5p nhi\u1ec1u Filter Hooks kh\u00e1c nhau \u0111\u1ec3 l\u1ecdc d\u1eef li\u1ec7u t\u1ea1i c\u00e1c th\u1eddi \u0111i\u1ec3m kh\u00e1c nhau (v\u00ed d\u1ee5: <code>the_title<\/code>, <code>the_content<\/code>, <code>wp_mail<\/code>, <code>pre_get_posts<\/code>).<\/li>\n\n\n\n<li><code>'your_filter_function_name'<\/code>: T\u00ean c\u1ee7a h\u00e0m PHP m\u00e0 b\u1ea1n mu\u1ed1n th\u1ef1c thi \u0111\u1ec3 s\u1eeda \u0111\u1ed5i d\u1eef li\u1ec7u. H\u00e0m n\u00e0y <strong>ph\u1ea3i<\/strong> tr\u1ea3 v\u1ec1 d\u1eef li\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1ecdc.<\/li>\n\n\n\n<li><code>[priority]<\/code> (t\u00f9y ch\u1ecdn): T\u01b0\u01a1ng t\u1ef1 nh\u01b0 trong <code>add_action()<\/code>, ch\u1ec9 \u0111\u1ecbnh th\u1ee9 t\u1ef1 \u01b0u ti\u00ean th\u1ef1c thi c\u1ee7a h\u00e0m.<\/li>\n\n\n\n<li><code>[accepted_args]<\/code> (t\u00f9y ch\u1ecdn): S\u1ed1 l\u01b0\u1ee3ng tham s\u1ed1 m\u00e0 h\u00e0m c\u1ee7a b\u1ea1n ch\u1ea5p nh\u1eadn. WordPress s\u1ebd truy\u1ec1n c\u00e1c tham s\u1ed1 t\u01b0\u01a1ng \u1ee9ng (d\u1eef li\u1ec7u c\u1ea7n l\u1ecdc) khi Filter Hook \u0111\u01b0\u1ee3c g\u1ecdi.<\/li>\n<\/ul>\n\n\n\n<p><strong>3.2. V\u00ed d\u1ee5 v\u1ec1 Filter<\/strong><\/p>\n\n\n\n<p>Gi\u1ea3 s\u1eed b\u1ea1n mu\u1ed1n th\u00eam ti\u1ec1n t\u1ed1 &#8220;\u0110\u00e3 l\u1ecdc: &#8221; v\u00e0o ti\u00eau \u0111\u1ec1 c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c b\u00e0i vi\u1ebft hi\u1ec3n th\u1ecb tr\u00ean trang web. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng Filter Hook <code>the_title<\/code>:<\/p>\n\n\n\n<p>Trong file <code>functions.php<\/code> c\u1ee7a theme ho\u1eb7c m\u1ed9t plugin t\u00f9y ch\u1ec9nh:<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: php; title: ; notranslate\" title=\"\">\nfunction my_prefix_post_title( $title ) {\n    return &#039;\u0110\u00e3 l\u1ecdc: &#039; . $title;\n}\nadd_filter( &#039;the_title&#039;, &#039;my_prefix_post_title&#039; );\n<\/pre><\/div>\n\n\n<p>Khi WordPress chu\u1ea9n b\u1ecb hi\u1ec3n th\u1ecb ti\u00eau \u0111\u1ec1 c\u1ee7a m\u1ed9t b\u00e0i vi\u1ebft, Filter Hook <code>the_title<\/code> s\u1ebd \u0111\u01b0\u1ee3c g\u1ecdi, h\u00e0m <code>my_prefix_post_title()<\/code> s\u1ebd nh\u1eadn gi\u00e1 tr\u1ecb ti\u00eau \u0111\u1ec1 hi\u1ec7n t\u1ea1i (<code>$title<\/code>) v\u00e0 tr\u1ea3 v\u1ec1 ti\u00eau \u0111\u1ec1 \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam ti\u1ec1n t\u1ed1.<\/p>\n\n\n\n<p><strong>3.3. C\u00e1c Filter Hook ph\u1ed5 bi\u1ebfn<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>the_title<\/code>: L\u1ecdc ti\u00eau \u0111\u1ec1 c\u1ee7a b\u00e0i vi\u1ebft tr\u01b0\u1edbc khi hi\u1ec3n th\u1ecb.<\/li>\n\n\n\n<li><code>the_content<\/code>: L\u1ecdc n\u1ed9i dung c\u1ee7a b\u00e0i vi\u1ebft tr\u01b0\u1edbc khi hi\u1ec3n th\u1ecb.<\/li>\n\n\n\n<li><code>the_excerpt<\/code>: L\u1ecdc \u0111o\u1ea1n tr\u00edch c\u1ee7a b\u00e0i vi\u1ebft tr\u01b0\u1edbc khi hi\u1ec3n th\u1ecb.<\/li>\n\n\n\n<li><code>wp_mail<\/code>: L\u1ecdc c\u00e1c tham s\u1ed1 c\u1ee7a email tr\u01b0\u1edbc khi n\u00f3 \u0111\u01b0\u1ee3c g\u1eedi \u0111i (v\u00ed d\u1ee5: ti\u00eau \u0111\u1ec1, n\u1ed9i dung, ng\u01b0\u1eddi nh\u1eadn).<\/li>\n\n\n\n<li><code>pre_get_posts<\/code>: M\u1ed9t filter m\u1ea1nh m\u1ebd cho ph\u00e9p b\u1ea1n s\u1eeda \u0111\u1ed5i \u0111\u1ed1i t\u01b0\u1ee3ng <code>$wp_query<\/code> tr\u01b0\u1edbc khi n\u00f3 th\u1ef1c hi\u1ec7n truy v\u1ea5n c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1ec3 l\u1ea5y c\u00e1c b\u00e0i vi\u1ebft. Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 thay \u0111\u1ed5i s\u1ed1 l\u01b0\u1ee3ng b\u00e0i vi\u1ebft hi\u1ec3n th\u1ecb, s\u1eafp x\u1ebfp, ho\u1eb7c l\u1ecdc c\u00e1c b\u00e0i vi\u1ebft d\u1ef1a tr\u00ean c\u00e1c ti\u00eau ch\u00ed t\u00f9y ch\u1ec9nh.<\/li>\n\n\n\n<li><code>widget_title<\/code>: L\u1ecdc ti\u00eau \u0111\u1ec1 c\u1ee7a widget tr\u01b0\u1edbc khi hi\u1ec3n th\u1ecb.<\/li>\n\n\n\n<li><code>login_redirect<\/code>: L\u1ecdc URL chuy\u1ec3n h\u01b0\u1edbng sau khi ng\u01b0\u1eddi d\u00f9ng \u0111\u0103ng nh\u1eadp th\u00e0nh c\u00f4ng.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>4. G\u1ee1 b\u1ecf Hooks<\/strong><\/h3>\n\n\n\n<p>\u0110\u00f4i khi b\u1ea1n c\u1ea7n g\u1ee1 b\u1ecf m\u1ed9t Hook \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam tr\u01b0\u1edbc \u0111\u00f3. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c h\u00e0m sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>remove_action( 'hook_name', 'function_to_remove', [priority] )<\/code>: G\u1ee1 b\u1ecf m\u1ed9t Action Hook. C\u1ea7n cung c\u1ea5p t\u00ean Hook, t\u00ean h\u00e0m \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0 t\u00f9y ch\u1ecdn l\u00e0 \u0111\u1ed9 \u01b0u ti\u00ean n\u1ebfu n\u00f3 kh\u00e1c v\u1edbi m\u1eb7c \u0111\u1ecbnh.<\/li>\n\n\n\n<li><code>remove_filter( 'hook_name', 'function_to_remove', [priority] )<\/code>: G\u1ee1 b\u1ecf m\u1ed9t Filter Hook. T\u01b0\u01a1ng t\u1ef1 nh\u01b0 <code>remove_action()<\/code>.<\/li>\n\n\n\n<li><code>remove_all_actions( 'hook_name', [priority] )<\/code>: G\u1ee1 b\u1ecf t\u1ea5t c\u1ea3 c\u00e1c h\u00e0m \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u00e8n v\u00e0o m\u1ed9t Action Hook c\u1ee5 th\u1ec3.<\/li>\n\n\n\n<li><code>remove_all_filters( 'hook_name', [priority] )<\/code>: G\u1ee1 b\u1ecf t\u1ea5t c\u1ea3 c\u00e1c h\u00e0m \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u00e8n v\u00e0o m\u1ed9t Filter Hook c\u1ee5 th\u1ec3.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>5. T\u00ecm ki\u1ebfm Hooks<\/strong><\/h3>\n\n\n\n<p>WordPress c\u00f3 r\u1ea5t nhi\u1ec1u Hooks, v\u00e0 vi\u1ec7c t\u00ecm ki\u1ebfm Hook ph\u00f9 h\u1ee3p c\u00f3 th\u1ec3 h\u01a1i kh\u00f3 kh\u0103n l\u00fac \u0111\u1ea7u. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 c\u00e1ch b\u1ea1n c\u00f3 th\u1ec3 t\u00ecm ki\u1ebfm Hooks:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Xem m\u00e3 ngu\u1ed3n WordPress:<\/strong> C\u00e1ch ch\u00ednh x\u00e1c nh\u1ea5t l\u00e0 xem tr\u1ef1c ti\u1ebfp m\u00e3 ngu\u1ed3n c\u1ee7a WordPress. C\u00e1c h\u00e0m <code>do_action()<\/code> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 g\u1ecdi Action Hooks v\u00e0 <code>apply_filters()<\/code> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 g\u1ecdi Filter Hooks. B\u1ea1n c\u00f3 th\u1ec3 t\u00ecm ki\u1ebfm c\u00e1c h\u00e0m n\u00e0y trong c\u00e1c file core, theme, ho\u1eb7c plugin.<\/li>\n\n\n\n<li><strong>S\u1eed d\u1ee5ng t\u00e0i li\u1ec7u WordPress Developer:<\/strong> Trang web <a href=\"http:\/\/developer.wordpress.org\">WordPress Developer<\/a> c\u00f3 t\u00e0i li\u1ec7u chi ti\u1ebft v\u1ec1 nhi\u1ec1u Hooks.<\/li>\n\n\n\n<li><strong>S\u1eed d\u1ee5ng plugin h\u1ed7 tr\u1ee3:<\/strong> C\u00f3 m\u1ed9t s\u1ed1 plugin c\u1ee7a b\u00ean th\u1ee9 ba c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n li\u1ec7t k\u00ea c\u00e1c Hooks \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u00ean trang web c\u1ee7a b\u1ea1n.<\/li>\n\n\n\n<li><strong>T\u00ecm ki\u1ebfm tr\u1ef1c tuy\u1ebfn:<\/strong> S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm v\u1edbi c\u00e1c t\u1eeb kh\u00f3a li\u00ean quan \u0111\u1ebfn h\u00e0nh \u0111\u1ed9ng ho\u1eb7c d\u1eef li\u1ec7u b\u1ea1n mu\u1ed1n s\u1eeda \u0111\u1ed5i trong WordPress.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>6. Th\u1ef1c h\u00e0nh v\u00e0 th\u1eed nghi\u1ec7m<\/strong><\/h3>\n\n\n\n<p>C\u00e1ch t\u1ed1t nh\u1ea5t \u0111\u1ec3 h\u1ecdc v\u1ec1 Filters v\u00e0 Actions l\u00e0 th\u1ef1c h\u00e0nh v\u00e0 th\u1eed nghi\u1ec7m. H\u00e3y b\u1eaft \u0111\u1ea7u v\u1edbi nh\u1eefng v\u00ed d\u1ee5 \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1ea7n d\u1ea7n th\u1eed nghi\u1ec7m v\u1edbi c\u00e1c Hooks ph\u1ee9c t\u1ea1p h\u01a1n. \u0110\u1eebng ng\u1ea1i m\u1eafc l\u1ed7i, v\u00ec \u0111\u00f3 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a qu\u00e1 tr\u00ecnh h\u1ecdc t\u1eadp.<\/p>\n\n\n\n<p><strong>L\u01b0u \u00fd quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lu\u00f4n \u0111\u1eb7t code t\u00f9y ch\u1ec9nh c\u1ee7a b\u1ea1n trong file <code>functions.php<\/code> c\u1ee7a theme con (child theme) ho\u1eb7c trong m\u1ed9t plugin t\u00f9y ch\u1ec9nh. Tr\u00e1nh s\u1eeda \u0111\u1ed5i tr\u1ef1c ti\u1ebfp c\u00e1c file c\u1ee7a theme cha ho\u1eb7c plugin, v\u00ec nh\u1eefng thay \u0111\u1ed5i n\u00e0y s\u1ebd b\u1ecb m\u1ea5t khi b\u1ea1n c\u1eadp nh\u1eadt theme ho\u1eb7c plugin.<\/li>\n\n\n\n<li>Hi\u1ec3u r\u00f5 m\u1ee5c \u0111\u00edch v\u00e0 th\u1eddi \u0111i\u1ec3m k\u00edch ho\u1ea1t c\u1ee7a m\u1ed7i Hook tr\u01b0\u1edbc khi s\u1eed d\u1ee5ng.<\/li>\n\n\n\n<li>Ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng code c\u1ee7a b\u1ea1n sau khi th\u00eam ho\u1eb7c s\u1eeda \u0111\u1ed5i Hooks \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u00f4ng g\u00e2y ra l\u1ed7i cho trang web.<\/li>\n<\/ul>\n\n\n\n<p>Ch\u00fac b\u1ea1n th\u00e0nh c\u00f4ng tr\u00ean h\u00e0nh tr\u00ecnh kh\u00e1m ph\u00e1 s\u1ee9c m\u1ea1nh c\u1ee7a Filters v\u00e0 Actions trong WordPress!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hooks (Filters v\u00e0 Actions) l\u00e0 m\u1ed9t b\u01b0\u1edbc quan tr\u1ecdng \u0111\u1ec3 t\u00f9y ch\u1ec9nh v\u00e0 m\u1edf r\u1ed9ng WordPress. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 h\u01b0\u1edbng [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":9614,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[241],"tags":[],"class_list":["post-9627","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hooks"],"views":585,"_links":{"self":[{"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/posts\/9627","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=9627"}],"version-history":[{"count":10,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/posts\/9627\/revisions"}],"predecessor-version":[{"id":9640,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/posts\/9627\/revisions\/9640"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/media\/9614"}],"wp:attachment":[{"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/media?parent=9627"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/categories?post=9627"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/tags?post=9627"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}