{"id":8569,"date":"2016-02-16T18:52:37","date_gmt":"2016-02-16T23:52:37","guid":{"rendered":"httpss:\/\/www.powenko.com\/wordpress\/?p=8569"},"modified":"2016-02-16T18:54:52","modified_gmt":"2016-02-16T23:54:52","slug":"page-metabox-%e7%af%84%e4%be%8b%e7%a8%8b%e5%bc%8f1","status":"publish","type":"post","link":"https:\/\/www.powenko.com\/wordpress\/?p=8569","title":{"rendered":"page metabox \u7bc4\u4f8b\u7a0b\u5f0f1"},"content":{"rendered":"
\r\n\r\n \/* Called by save_post action to save meta data in database. *\/\r\n    function save_my_custom_meta_box($post_id,  $post, $update)\/*$post contains info about the post and $post_id is assigned to the id of the post*\/\r\n    {\r\n        \/* Verify the nonce before proceeding. For security *\/\r\n        if (!isset($_POST["qnimate-email-nonce"]) || !wp_verify_nonce($_POST["qnimate-email-nonce"], basename(__FILE__)))\r\n          return $post_id;\r\n      \r\n        \/* Check if the current user has permission to edit the post. For security *\/\r\n        if(!current_user_can("edit_page", $post_id))\r\n            return $post_id;\r\n\r\n        \/\/check if it is autosave\r\n        if(defined("DOING_AUTOSAVE") && DOING_AUTOSAVE)\r\n            return $post_id;\r\n\r\n        \/\/check if the post type is correct\r\n        \/*\r\n        $slug = "page";\r\n        if($slug != $post->post_type)\r\n            return;\r\n*\/\r\n\r\n        \/* Store the user enter value in a variable *\/\r\n        $user_entered_email_value = "";\r\n        if(isset($_POST["author-email"]))\r\n        {\r\n            $user_entered_email_value = $_POST["author-email"];\r\n        }\r\n        else\r\n        {\r\n            $user_entered_email_value = "";\r\n        }\r\n        update_post_meta(get_the_ID(), "author-email", $user_entered_email_value);\r\n    }\r\n\r\n\r\n\r\n\r\n    \/*Callback*\/\r\n    function meta_box_markup($object)\/*$object conatins the information about the post*\/\r\n    {\r\n        \/*nonce for security purpose. more on it at httpss:\/\/codex.wordpress.org\/WordPress_Nonces *\/\r\n        wp_nonce_field(basename(__FILE__), 'qnimate-email-nonce');\r\n\r\n\r\n\r\n\r\n        ?>\r\n            <!-- Markup inside the custom meta box -->\r\n            <div>\r\n                <label for="author-email">E-Mail Of Author<\/label>\r\n                <!-- Retrieve the email from database. If not yet set then empty string is returned. -->\r\n                <input name="author-email" type="email" validate="true" value="<?php echo get_post_meta(get_the_ID(), "author-email", true); ?>">\r\n            <\/div>\r\n        <?php\r\n    }\r\n\r\n\r\n\r\n\r\n    function my_custom_meta_box()\r\n    {\r\n        \/*\r\n        Parameters for add_meta_box() are $id, $title, $callback, $page, $context, $priority, $callback_args\r\n        -> $id is a unqiue id given to every meta box\r\n        -> $title is the title displayed in custom meta box\r\n        -> $callback is a function that outputs markup inside the custom meta box\r\n        -> $page respresents the admin page on which the mata box will be displayed on. It can be page, post, custom post type \r\n        -> $context respresents the postiton of the meta box. It can be normal, advanced or side.\r\n        -> $priority is the position of the box insde the context. It can be high, core, default or low\r\n        -> $cannback_args is used to pass arguements to the callback function.\r\n        *\/\r\n        add_meta_box("qnimate-meta-box", "Author Information", "meta_box_markup", "page", "normal", "default", null);\r\n    }\r\n\r\n\r\n\r\n    \/* This action is responsibe for creating and displaying meta boxes *\/\r\n    add_action("add_meta_boxes",  "my_custom_meta_box");\r\n\r\n\r\n\r\n\r\n    \/* Used to store the meta data in database *\/\r\n    add_action("save_post", "save_my_custom_meta_box" , 10, 3);\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
\/* Called by save_post action to save meta data in data […]<\/p>\n","protected":false},"author":1,"featured_media":8566,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[302],"tags":[],"class_list":["post-8569","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ch13meta-box"],"_links":{"self":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/8569"}],"collection":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8569"}],"version-history":[{"count":1,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/8569\/revisions"}],"predecessor-version":[{"id":8570,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/8569\/revisions\/8570"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/media\/8566"}],"wp:attachment":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8569"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8569"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8569"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}