Plugin development, install

  • I am attempting to create my own plugin, and am running into a fatal error when I attempt to activate it. I cannot figure out why. As of now, the only thing the plugin does is create a new DB table at activation. Here is the code

    $rbVersion = "1.0";

//install DB tables
function rb_install() {
	global $wpdb;

	//first check to see if the DB table already exists
	$tableName = $wpdb->prefix . "rusty_beard";

	if($wpdb->getvar("SHOW TABLES LIKE '" . $tableName . "'") != $tableName) {
		//create DB tables
		$install = "CREATE TABLE " . $tableName . "(
				field_id  KEY INT NOT NULL AUTO_INCREMENT,
				field_name VARCHAR(50),
				field_type VARCHAR(50),
				field_default VARCHAR(240),
				field_required INT,
				field_label VARCHAR(240)
				field_order INT)";

		require_once(ABSPATH . 'wp-admin/includes/upgrade.php');

		dbDelta($install);

		//add version to DB
		add_option("rb_version", $rbVersion);

	}
}

//install the plugin
register_activation_hook(__FILE__, 'rb_install');

    This is all located in the main plugin file, the only plugin file I have.

    When I attempt to activate it, WP gives the following error:

    Plugin could not be activated because it triggered a fatal error.

Fatal error: Cannot redeclare rb_install() (previously declared in /home/dir/public_html/dir/wp-content/plugins/RustyBeard/rusty_beard.php:21) in /home/dir/public_html/dir/wp-content/plugins/RustyBeard/rusty_beard.php on line 45
Viewing 2 replies - 1 through 2 (of 2 total)

  • I am having the same problem. I see you have other threads about register_activation_hook. Did you get it resolved?

    You need to wrap the above code with the following if statement…

    if(!function_exists("rb_install")){
    function rb_install() {
	global $wpdb;

	//first check to see if the DB table already exists
	$tableName = $wpdb->prefix . "rusty_beard";

	if($wpdb->getvar("SHOW TABLES LIKE '" . $tableName . "'") != $tableName) {
		//create DB tables
		$install = "CREATE TABLE " . $tableName . "(
				field_id  KEY INT NOT NULL AUTO_INCREMENT,
				field_name VARCHAR(50),
				field_type VARCHAR(50),
				field_default VARCHAR(240),
				field_required INT,
				field_label VARCHAR(240)
				field_order INT)";

		require_once(ABSPATH . 'wp-admin/includes/upgrade.php');

		dbDelta($install);

		//add version to DB
		add_option("rb_version", $rbVersion);

	}
    }

    //install the plugin
    register_activation_hook(__FILE__, 'rb_install');
}
Viewing 2 replies - 1 through 2 (of 2 total)
  • The topic ‘Plugin development, install’ is closed to new replies.