├── LICENSE
├── README.md
└── plugin.php
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1 | GNU GENERAL PUBLIC LICENSE
2 | Version 3, 29 June 2007
3 |
4 | Copyright (C) 2007 Free Software Foundation, Inc.
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586 | author or copyright holder as a result of your choosing to follow a
587 | later version.
588 |
589 | 15. Disclaimer of Warranty.
590 |
591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
599 |
600 | 16. Limitation of Liability.
601 |
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610 | SUCH DAMAGES.
611 |
612 | 17. Interpretation of Sections 15 and 16.
613 |
614 | If the disclaimer of warranty and limitation of liability provided
615 | above cannot be given local legal effect according to their terms,
616 | reviewing courts shall apply local law that most closely approximates
617 | an absolute waiver of all civil liability in connection with the
618 | Program, unless a warranty or assumption of liability accompanies a
619 | copy of the Program in return for a fee.
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621 | END OF TERMS AND CONDITIONS
622 |
623 | How to Apply These Terms to Your New Programs
624 |
625 | If you develop a new program, and you want it to be of the greatest
626 | possible use to the public, the best way to achieve this is to make it
627 | free software which everyone can redistribute and change under these terms.
628 |
629 | To do so, attach the following notices to the program. It is safest
630 | to attach them to the start of each source file to most effectively
631 | state the exclusion of warranty; and each file should have at least
632 | the "copyright" line and a pointer to where the full notice is found.
633 |
634 | {one line to give the program's name and a brief idea of what it does.}
635 | Copyright (C) {year} {name of author}
636 |
637 | This program is free software: you can redistribute it and/or modify
638 | it under the terms of the GNU General Public License as published by
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640 | (at your option) any later version.
641 |
642 | This program is distributed in the hope that it will be useful,
643 | but WITHOUT ANY WARRANTY; without even the implied warranty of
644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
645 | GNU General Public License for more details.
646 |
647 | You should have received a copy of the GNU General Public License
648 | along with this program. If not, see .
649 |
650 | Also add information on how to contact you by electronic and paper mail.
651 |
652 | If the program does terminal interaction, make it output a short
653 | notice like this when it starts in an interactive mode:
654 |
655 | {project} Copyright (C) {year} {fullname}
656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
657 | This is free software, and you are welcome to redistribute it
658 | under certain conditions; type `show c' for details.
659 |
660 | The hypothetical commands `show w' and `show c' should show the appropriate
661 | parts of the General Public License. Of course, your program's commands
662 | might be different; for a GUI interface, you would use an "about box".
663 |
664 | You should also get your employer (if you work as a programmer) or school,
665 | if any, to sign a "copyright disclaimer" for the program, if necessary.
666 | For more information on this, and how to apply and follow the GNU GPL, see
667 | .
668 |
669 | The GNU General Public License does not permit incorporating your program
670 | into proprietary programs. If your program is a subroutine library, you
671 | may consider it more useful to permit linking proprietary applications with
672 | the library. If this is what you want to do, use the GNU Lesser General
673 | Public License instead of this License. But first, please read
674 | .
675 |
676 |
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # WP_List_Table-Class-Plugin-Example
2 | A plugin demonstration on how to use WordPress WP_List_Table Class
3 |
4 | # Database SQL dump
5 |
6 | ``` sql
7 | CREATE TABLE IF NOT EXISTS `wp_customers` (
8 | `ID` int(11) NOT NULL,
9 | `name` varchar(20) NOT NULL,
10 | `address` varchar(30) NOT NULL,
11 | `city` varchar(10) NOT NULL
12 | ) ENGINE=InnoDB AUTO_INCREMENT=13 DEFAULT CHARSET=latin1;
13 |
14 | INSERT INTO `wp_customers` (`ID`, `name`, `address`, `city`) VALUES
15 | (1, 'Alfreds Futterkiste ', 'Obere Str. 57', 'Berlin'),
16 | (2, 'Ana Trujillo ', 'Avda. de la Constitución 2222', 'México D.F'),
17 | (3, 'Antonio Moreno', 'Mataderos 2312', 'México D.F'),
18 | (4, 'Thomas Hardy ', '120 Hanover Sq.', 'London'),
19 | (5, 'Christina Berglund ', 'Berguvsvägen 8 ', 'Lulea'),
20 | (9, 'Hanna Moos', 'Forsterstr. 57', 'Mannheim'),
21 | (10, 'Frédérique Citeaux', '24, place Kléber', 'Strasbourg'),
22 | (11, 'Martín Sommer', 'C/ Araquil, 67', 'Madrid'),
23 | (12, 'Laurence Lebihans', '12, rue des Bouchers', 'Marseille');
24 |
25 | ALTER TABLE `wp_customers` ADD PRIMARY KEY (`ID`);
26 |
27 | ALTER TABLE `wp_customers` MODIFY `ID` int(11) NOT NULL AUTO_INCREMENT;
28 | ```
29 |
30 | # Security
31 |
32 | You should whitelist the orderby parameter your plugin / theme accept to avoid any form of sql injection. See [#2](https://github.com/collizo4sky/WP_List_Table-Class-Plugin-Example/issues/2)
33 |
--------------------------------------------------------------------------------
/plugin.php:
--------------------------------------------------------------------------------
1 | __( 'Customer', 'sp' ), //singular name of the listed records
23 | 'plural' => __( 'Customers', 'sp' ), //plural name of the listed records
24 | 'ajax' => false //does this table support ajax?
25 | ] );
26 |
27 | }
28 |
29 |
30 | /**
31 | * Retrieve customers data from the database
32 | *
33 | * @param int $per_page
34 | * @param int $page_number
35 | *
36 | * @return mixed
37 | */
38 | public static function get_customers( $per_page = 5, $page_number = 1 ) {
39 |
40 | global $wpdb;
41 |
42 | $sql = "SELECT * FROM {$wpdb->prefix}customers";
43 |
44 | if ( ! empty( $_REQUEST['orderby'] ) ) {
45 | $sql .= ' ORDER BY ' . esc_sql( $_REQUEST['orderby'] );
46 | $sql .= ! empty( $_REQUEST['order'] ) ? ' ' . esc_sql( $_REQUEST['order'] ) : ' ASC';
47 | }
48 |
49 | $sql .= " LIMIT $per_page";
50 | $sql .= ' OFFSET ' . ( $page_number - 1 ) * $per_page;
51 |
52 |
53 | $result = $wpdb->get_results( $sql, 'ARRAY_A' );
54 |
55 | return $result;
56 | }
57 |
58 |
59 | /**
60 | * Delete a customer record.
61 | *
62 | * @param int $id customer ID
63 | */
64 | public static function delete_customer( $id ) {
65 | global $wpdb;
66 |
67 | $wpdb->delete(
68 | "{$wpdb->prefix}customers",
69 | [ 'ID' => $id ],
70 | [ '%d' ]
71 | );
72 | }
73 |
74 |
75 | /**
76 | * Returns the count of records in the database.
77 | *
78 | * @return null|string
79 | */
80 | public static function record_count() {
81 | global $wpdb;
82 |
83 | $sql = "SELECT COUNT(*) FROM {$wpdb->prefix}customers";
84 |
85 | return $wpdb->get_var( $sql );
86 | }
87 |
88 |
89 | /** Text displayed when no customer data is available */
90 | public function no_items() {
91 | _e( 'No customers avaliable.', 'sp' );
92 | }
93 |
94 |
95 | /**
96 | * Render a column when no column specific method exist.
97 | *
98 | * @param array $item
99 | * @param string $column_name
100 | *
101 | * @return mixed
102 | */
103 | public function column_default( $item, $column_name ) {
104 | switch ( $column_name ) {
105 | case 'address':
106 | case 'city':
107 | return $item[ $column_name ];
108 | default:
109 | return print_r( $item, true ); //Show the whole array for troubleshooting purposes
110 | }
111 | }
112 |
113 | /**
114 | * Render the bulk edit checkbox
115 | *
116 | * @param array $item
117 | *
118 | * @return string
119 | */
120 | function column_cb( $item ) {
121 | return sprintf(
122 | '', $item['ID']
123 | );
124 | }
125 |
126 |
127 | /**
128 | * Method for name column
129 | *
130 | * @param array $item an array of DB data
131 | *
132 | * @return string
133 | */
134 | function column_name( $item ) {
135 |
136 | $delete_nonce = wp_create_nonce( 'sp_delete_customer' );
137 |
138 | $title = '' . $item['name'] . '';
139 |
140 | $actions = [
141 | 'delete' => sprintf( 'Delete', esc_attr( $_REQUEST['page'] ), 'delete', absint( $item['ID'] ), $delete_nonce )
142 | ];
143 |
144 | return $title . $this->row_actions( $actions );
145 | }
146 |
147 |
148 | /**
149 | * Associative array of columns
150 | *
151 | * @return array
152 | */
153 | function get_columns() {
154 | $columns = [
155 | 'cb' => '',
156 | 'name' => __( 'Name', 'sp' ),
157 | 'address' => __( 'Address', 'sp' ),
158 | 'city' => __( 'City', 'sp' )
159 | ];
160 |
161 | return $columns;
162 | }
163 |
164 |
165 | /**
166 | * Columns to make sortable.
167 | *
168 | * @return array
169 | */
170 | public function get_sortable_columns() {
171 | $sortable_columns = array(
172 | 'name' => array( 'name', true ),
173 | 'city' => array( 'city', false )
174 | );
175 |
176 | return $sortable_columns;
177 | }
178 |
179 | /**
180 | * Returns an associative array containing the bulk action
181 | *
182 | * @return array
183 | */
184 | public function get_bulk_actions() {
185 | $actions = [
186 | 'bulk-delete' => 'Delete'
187 | ];
188 |
189 | return $actions;
190 | }
191 |
192 |
193 | /**
194 | * Handles data query and filter, sorting, and pagination.
195 | */
196 | public function prepare_items() {
197 |
198 | $this->_column_headers = $this->get_column_info();
199 |
200 | /** Process bulk action */
201 | $this->process_bulk_action();
202 |
203 | $per_page = $this->get_items_per_page( 'customers_per_page', 5 );
204 | $current_page = $this->get_pagenum();
205 | $total_items = self::record_count();
206 |
207 | $this->set_pagination_args( [
208 | 'total_items' => $total_items, //WE have to calculate the total number of items
209 | 'per_page' => $per_page //WE have to determine how many items to show on a page
210 | ] );
211 |
212 | $this->items = self::get_customers( $per_page, $current_page );
213 | }
214 |
215 | public function process_bulk_action() {
216 |
217 | //Detect when a bulk action is being triggered...
218 | if ( 'delete' === $this->current_action() ) {
219 |
220 | // In our file that handles the request, verify the nonce.
221 | $nonce = esc_attr( $_REQUEST['_wpnonce'] );
222 |
223 | if ( ! wp_verify_nonce( $nonce, 'sp_delete_customer' ) ) {
224 | die( 'Go get a life script kiddies' );
225 | }
226 | else {
227 | self::delete_customer( absint( $_GET['customer'] ) );
228 |
229 | // esc_url_raw() is used to prevent converting ampersand in url to "#038;"
230 | // add_query_arg() return the current url
231 | wp_redirect( esc_url_raw(add_query_arg()) );
232 | exit;
233 | }
234 |
235 | }
236 |
237 | // If the delete bulk action is triggered
238 | if ( ( isset( $_POST['action'] ) && $_POST['action'] == 'bulk-delete' )
239 | || ( isset( $_POST['action2'] ) && $_POST['action2'] == 'bulk-delete' )
240 | ) {
241 |
242 | $delete_ids = esc_sql( $_POST['bulk-delete'] );
243 |
244 | // loop over the array of record IDs and delete them
245 | foreach ( $delete_ids as $id ) {
246 | self::delete_customer( $id );
247 |
248 | }
249 |
250 | // esc_url_raw() is used to prevent converting ampersand in url to "#038;"
251 | // add_query_arg() return the current url
252 | wp_redirect( esc_url_raw(add_query_arg()) );
253 | exit;
254 | }
255 | }
256 |
257 | }
258 |
259 |
260 | class SP_Plugin {
261 |
262 | // class instance
263 | static $instance;
264 |
265 | // customer WP_List_Table object
266 | public $customers_obj;
267 |
268 | // class constructor
269 | public function __construct() {
270 | add_filter( 'set_screen_option', [ __CLASS__, 'set_screen' ], 10, 3 );
271 | add_action( 'admin_menu', [ $this, 'plugin_menu' ] );
272 | }
273 |
274 |
275 | public static function set_screen( $status, $option, $value ) {
276 | return $value;
277 | }
278 |
279 | public function plugin_menu() {
280 |
281 | $hook = add_menu_page(
282 | 'Sitepoint WP_List_Table Example',
283 | 'SP WP_List_Table',
284 | 'manage_options',
285 | 'wp_list_table_class',
286 | [ $this, 'plugin_settings_page' ]
287 | );
288 |
289 | add_action( "load-$hook", [ $this, 'screen_option' ] );
290 |
291 | }
292 |
293 |
294 | /**
295 | * Plugin settings page
296 | */
297 | public function plugin_settings_page() {
298 | ?>
299 |