/**
* renders a view template using twig and passes needed data to the view
* @param string $view | the view template file
* @param array $data | array of parametres passed to the view
*/
public function view($view, $data = [])
{
/**
* specifies the views directory for twig
* @var object
*/
$loader = new \Twig_Loader_Filesystem(Config::get('paths.views'));
/**
* twig templating engine instance
* @var object
*/
$twig = new \Twig_Environment($loader);
/**
* contains additional stuff needed to be present in the view
* @var array
*/
$additionals = ['base' => Config::get('app.url'), 'home' => Config::get('app.url') . '/home'];
/**
* contains the result of mergin the passed data from the model & the additional stuff
* @var array
*/
$passed_to_view = array_merge($data, $additionals);
// render the template if it exists
if (file_exists(Config::get('paths.views') . '/' . $view . '.html')) {
echo $twig->render($view . '.html', $passed_to_view);
} else {
display_error('View file "' . $view . '" does not exist!');
}
}
/**
* establishes a database connection using PDO
*/
private function __construct()
{
try {
// connect to the database
$this->db = new PDO('mysql:host=' . Config::get('db.host') . ';dbname=' . Config::get('db.name'), Config::get('db.user'), Config::get('db.pass'));
$this->db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
// create tables if they don't exist
$query = $this->db->exec("CREATE TABLE IF NOT EXISTS users(\n id INTEGER NOT NULL PRIMARY KEY AUTO_INCREMENT,\n username VARCHAR(25) NOT NULL,\n password VARCHAR(255) NOT NULL\n )");
$query = $this->db->exec("CREATE TABLE IF NOT EXISTS articles(\n id INTEGER NOT NULL PRIMARY KEY AUTO_INCREMENT,\n title VARCHAR(100) NOT NULL,\n body TEXT NOT NULL,\n created TIMESTAMP DEFAULT CURRENT_TIMESTAMP\n )");
} catch (PDOException $e) {
display_error($e->getMessage());
}
}
/**
* constructor
*/
public function __construct()
{
// set the session name
$this->session_name = Config::get('session.name');
}