HI this is my first post and the main question is about preventing my script to save post data in database after refreshing browser but I would like to write plugin for WordPress to use for every one as a starter script. So my second question is if this script is correct written and how would you do it.
<?php
/*
Plugin Name: Yoolek Starter Plugin
Plugin URI: http://yoolek.com/
Description: Yoolek Starter Plugin - simple starter plugin to use with shortcode [yoolek-starter-plugin]
Version: 1.0
Author:
Author URI: http://yoolek.com/
*/
defined( 'ABSPATH' ) or die( 'Plugin file cannot be accessed directly.' );
if ( ! class_exists( 'YoolekStarterPlugin' ) )
{
class YoolekStarterPlugin {
protected $tag = 'yoolek-starter-plugin';
protected $yoo_name;
protected $yoo_year;
protected $admin_option1;
protected $admin_option2;
public function __construct()
{
/* we will use shortcode [yoolek-starter-plugin] in post or page */
add_shortcode( $this->tag, array($this, 'run_yoolek' ) );
add_action( 'admin_menu', array( $this, 'admin_menu' ) );
}
public function run_yoolek()
{
ob_start();/*to keep content correctly (not under shortcode) look down <?php return ob_get_clean();?>*/
$this->create_form();
$this->result();
return ob_get_clean();
}
/**********************************************************/
private function result(){
$this->admin_option1 = get_option("yoolek-starter-plugin-option1");/*admin option*/
$this->admin_option2 = get_option("yoolek-starter-plugin-option2");/*admin option*/
echo "admin option 1= ".$this->admin_option1."<br/>";
echo "admin option 2= ".$this->admin_option2."<br/>";
global $wpdb; /* save data to database and display*/
$table_name = $wpdb->prefix . 'yoolek_starter_plugin';
if (isset($_POST['yoo_submit'])) {
$this->yoo_name = $_POST["yoo_name"];/* option*/
$this->yoo_year = $_POST["yoo_year"];/* option*/
$wpdb->insert($table_name, array(
"time" => date("Y-m-d H:i:s"),
"yoo_name" => $this->yoo_name,
"yoo_year" => $this->yoo_year
));
}
$result = $wpdb->get_results("SELECT * FROM ".$table_name." ORDER BY time DESC");
echo '<table class="table table-striped table-bordered table-condensed">';
echo '<thead>';
echo '<tr>';
echo '<th>ID</th>';
echo '<th>Time</th>';
echo '<th>Name</th>';
echo '<th>Year</th>';
echo '</tr>';
echo '</thead>';
echo '<tbody>';
foreach($result as $row){
echo '<tr>';
echo '<td>'.$row->id.'</td>';
echo '<td>'.$row->time.'</td>';
echo '<td>'.$row->yoo_name.'</td>';
echo '<td>'.$row->yoo_year.'</td>';
echo '</tr>';
};
echo '</tbody>';
echo '</table>';
}
/**********************************************************/
/**********************************************************/
private function create_form()
{
?><form class="form-horizontal" action="" method="post">
<fieldset>
<legend>Yoolek Starter Plugin Form</legend>
<!-- Select Basic -->
<br><br>
<!-- Text input-->
<div class="form-group">
<label class="col-xs-5 col-sm-3 control-label" for="yoo_name">Name:</label>
<div class="col-xs-7 col-sm-7">
<input id="yoo-name" name="yoo_name" placeholder="your name" class="form-control input-md" required="" type="text" value="">
</div>
</div>
<div class="form-group">
<label class="col-xs-5 col-sm-3 control-label" for="yoo-year">Your lucky year:</label>
<div class="col-xs-7 col-sm-7">
<select id="yoo-year" name="yoo_year" class="form-control">
<option value="1991">1991</option>
<option value="1992" selected>1992</option>
<option value="1993">1993</option>
</select>
</div>
</div>
<!-- Button -->
<div class="form-group">
<label class="col-xs-5 col-sm-4 control-label" for="submit"></label>
<div class="col-xs-7 col-sm-6">
<button id="submit" name="yoo_submit" class="btn btn-block btn-success">Submit</button>
</div>
</div>
</fieldset>
</form>
<br><br>
<?php
}/*html_form*/
/**********************************************************/
/*ADMIN,PLUGIN HOOKS AND FUNCTIONS*/
function settings_page() {
/*update*/
if (isset($_POST['option_update'])) {
check_admin_referer();//Tests if the current request was referred from an admin page
$variable1 = $_POST['field_option1'];
update_option("yoolek-starter-plugin-option1", $variable1);//update option
$variable2 = $_POST['field_option2'];
update_option("yoolek-starter-plugin-option2", $variable2);//update option
echo "<div class='updated'><p><strong>Yoolek Starter Plugin has been updated</strong></p></div>";
}
/**/
?><form method="post" action=" <?php admin_url('options-general.php?page=yoolek-starter-plugin.php')?> ">
<div class="wrap">
<h2>YOOLEK STARTER PLUGIN SETTINGS<sup style='color:#D54E21;font-size:12px;'><?php //echo $yoolek_starter_plugin_version; ?></sup></h2>
<div>
<label for="yoo_option1" style="width:200px; line-height:23px; float:left;">option1</label>
<select name="field_option1" id="option1" width="200" style="width: 200px">
<option value="option nr1" <?php if (get_option("yoolek-starter-plugin-option1")== "option nr1") { ?>selected="true" <?php }; ?>>option nr1</option>
<option value="option nr2" <?php if (get_option("yoolek-starter-plugin-option1")== "option nr2") { ?>selected="true" <?php }; ?>>option nr2</option>
<option value="option nr3" <?php if (get_option("yoolek-starter-plugin-option1")== "option nr3") { ?>selected="true" <?php }; ?>>option nr3</option>
</select>
<span class="setting-description"> Select option1.</span>
</div>
<div>
<label for="yoo_option2" style="width:200px; line-height:23px; float:left;">option2</label>
<input type="text" width="200" style="width: 200px" size="16" maxlength="12" name="field_option2" id="option2" value="<?php echo get_option("yoolek-starter-plugin-option2"); ?>" />
<span class="setting-description"> Enter option2.</span>
</div>
<p class="submit">
<input name="option_update" value="Save Changes" type="submit" class="button-primary" />
</p>
</div>
</form><?php
}
function admin_menu () {
add_options_page( 'Yoolek Starter Plugin Page', 'Yoolek Starter Plugin Menu', 'manage_options', 'yoolek-starter-plugin', array( $this, 'settings_page' ) );
}
static function plugin_activation() {
/* create table in data base*/
global $wpdb;
$table_name = $wpdb->prefix . 'yoolek_starter_plugin';/* name z _*/
$charset_collate = $wpdb->get_charset_collate();
$sql = "CREATE TABLE $table_name (
id mediumint(9) NOT NULL AUTO_INCREMENT,
time datetime DEFAULT '0000-00-00 00:00:00' NOT NULL,
yoo_name tinytext NOT NULL,
yoo_year text NOT NULL,
UNIQUE KEY id (id)
) $charset_collate;";
require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );
dbDelta( $sql );
/*create_options*/
/*add_option( $option, $value, $deprecated, $autoload );*/
add_option('yoolek-starter-plugin-option1', 'option1Value1', '', 'yes');/*<----------------------------------- Creates new database field */
add_option('yoolek-starter-plugin-option2', 'option1Value2', '', 'yes');/*<----------------------------------- Creates new database field */
}
static function plugin_deactivation() {
global $wpdb;
$table = $wpdb->prefix . 'yoolek_starter_plugin';
$wpdb->query("DROP TABLE IF EXISTS $table");
delete_option('yoolek-starter-plugin-option1');/*<----------------------------------------------------------- Deletes the database field */
delete_option('yoolek-starter-plugin-option2');/*<----------------------------------------------------------- Deletes the database field */
}
}/*class*/
new YoolekStarterPlugin;
register_activation_hook( __FILE__, array( 'YoolekStarterPlugin', 'plugin_activation' ) );/*<------------------------------ Runs when plugin is activated */
register_deactivation_hook( __FILE__, array( 'YoolekStarterPlugin', 'plugin_deactivation' ) );/*<---------------------------- Runs on plugin deactivation */
}/*if*/?>
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