99 lines
3.4 KiB
PHP
99 lines
3.4 KiB
PHP
<?php
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/*
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Plugin Name: Facebook like Hyperlink Preview
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Plugin URI: http://0l.de/projects/wordpress/plugins/linkpreview
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Description: Place an overview of your post embedded links below your post
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Version: 0.1
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Author: Steffen Vogel
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Author URI: http://www.steffemvogel.de
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Copyright 2010 Steffen Vogel (info@steffenvogel.de)
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2, as
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published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/* Use the admin_menu action to define the custom boxes */
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add_action('admin_menu', 'linkpreview_add_custom_box');
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/* Use the save_post action to do something with the data entered */
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add_action('save_post', 'linkpreview_save_postdata');
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/* Adds a custom section to the "advanced" Post and Page edit screens */
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function linkpreview_add_custom_box() {
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if( function_exists( 'add_meta_box' )) {
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add_meta_box( 'linkpreview_links', __('Link Summary', 'linkpreview'), 'linkpreview_inner_custom_box', 'post', 'advanced', 'high');
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add_meta_box( 'linkpreview_links', __('Link Summary', 'linkpreview'), 'linkpreview_inner_custom_box', 'page', 'advanced', 'high');
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}
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}
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/* Prints the inner fields for the custom post/page section */
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function linkpreview_inner_custom_box() {
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global $post;
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// Use nonce for verification
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echo '<input type="hidden" name="linkpreview_noncename" id="linkpreview_noncename" value="' .
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wp_create_nonce( plugin_basename(__FILE__) ) . '" />';
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$links = get_post_meta($post->ID, 'link');
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echo '<table>';
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echo '<tr><td><input type="text" name="linkpreview_links[]" /></td></tr>';
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foreach ($links as $link) {
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echo '<tr><td><input type="text" name="linkpreview_links[]" value="' . $link . '" /></td></tr>';
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}
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echo '</table>';
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}
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/* When the post is saved, saves our custom data */
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function linkpreview_save_postdata( $post_id ) {
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// verify this came from the our screen and with proper authorization,
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// because save_post can be triggered at other times
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if ( !wp_verify_nonce( $_POST['linkpreview_noncename'], plugin_basename(__FILE__) )) {
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return $post_id;
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}
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// verify if this is an auto save routine. If it is our form has not been submitted, so we dont want
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// to do anything
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if ( defined('DOING_AUTOSAVE') && DOING_AUTOSAVE )
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return $post_id;
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// Check permissions
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if ( 'page' == $_POST['post_type'] ) {
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if ( !current_user_can( 'edit_page', $post_id ) )
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return $post_id;
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} else {
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if ( !current_user_can( 'edit_post', $post_id ) )
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return $post_id;
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}
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// OK, we're authenticated: we need to find and save the data
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delete_post_meta($post_id, 'link');
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$links = $_POST['linkpreview_links'];
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foreach ($links as $link) {
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if (!empty($link))
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add_post_meta($post_id, 'link', $link);
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}
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return $mydata;
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}
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?>
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