/**
* Constructor
* create a new instance of the database helper
* @param string $tableName stores a table name
* @return void
*/
public function __construct($tableName)
{
//connect to PDO here.
$this->db = Database::getInstance();
$this->tableName = strtolower(Configurations::getConf("db")["tablePrefix"] . $tableName);
$this->modelName = $tableName;
}
/**
* getInstance
*
* Static method get
*
* @static
* @return instance of database
*/
public static function getInstance()
{
if (!isset(self::$instance)) {
// database configuration information
$type = Configurations::getConf("db")["type"];
$host = Configurations::getConf("db")["host"];
$name = Configurations::getConf("db")["name"];
$user = Configurations::getConf("db")["user"];
$pass = Configurations::getConf("db")["pass"];
$port = Configurations::getConf("db")["port"];
$charset = Configurations::getConf("db")["charset"];
//through an error and die
try {
$options[PDO::ATTR_ERRMODE] = PDO::ERRMODE_EXCEPTION;
self::$instance = new Database("{$type}:host={$host};port={$port};dbname={$name};charset={$charset}", $user, $pass, $options);
} catch (PDOException $e) {
die("Cannot connect to Database");
}
}
//return instance
return self::$instance;
}
/**
* route
* maps the url to controller and action
* @param string $url
* @return void
*/
public function route($url)
{
// seperate controller, action and parameters
$urlSegments = explode("/", $url);
if (!empty($urlSegments[0]) && strtolower($urlSegments[0]) != 'index') {
$this->controller = ucfirst($urlSegments[0]);
}
if (!empty($urlSegments[1]) && strtolower($urlSegments[1]) != 'index') {
$this->action = $urlSegments[1];
}
$params = count($urlSegments) > 2 ? array_slice($urlSegments, 2) : array();
//todo: modules/components/plugins routes
$filePath = Configurations::getConf("app")["basePath"] . "/" . $this->path . '/Controller/' . $this->controller . 'Controller.php';
if (is_readable($filePath)) {
include $filePath;
$class = $this->controller . "Controller";
$controller = new $class($this->controller, $this->action);
//is_callable function checks if the class and method is present and we can call it.
if (is_callable(array($controller, $this->action))) {
$action = $this->action;
//load its model class
$modelClass = Configurations::getConf("app")["basePath"] . "/" . $this->path . '/Model/' . ucfirst($this->controller) . '.php';
if (is_readable($modelClass)) {
include_once $modelClass;
}
} else {
$controller = new Error();
$action = 'index';
$params['error'] = 'Method not found: <strong>' . $this->controller . "Controller/" . $this->action . '</strong>';
}
} else {
$controller = new Error();
$action = 'index';
$params['error'] = 'Invalid request : <strong>' . $this->controller . "Controller/" . $this->action . '</strong>';
}
//invoke the controller
$controller->{$action}($params);
}
/**
* renders the view - parses the HTML
*/
function render()
{
//extracts all the parameters
extract($this->params);
$basePath = Configurations::getConf("app")["basePath"];
$path = "templates/views/" . $this->controller . "/" . $this->action . ".php";
$content = '';
//overide global view file if a local view is present in app/templates
if (file_exists($basePath . "app/" . $path)) {
$content = $this->renderContent($basePath . "app/" . $path, $params);
} else {
if (file_exists($basePath . $path)) {
$content = $this->renderContent($basePath . $path, $params);
} else {
$content = 'Error: View not found: ' . $path;
}
}
//set the page title parameter
if (!isset($params["page_title"])) {
$params["page_title"] = Configurations::getConf("app")["name"];
}
$path = "templates/layouts/" . $this->layout . ".php";
if (file_exists($basePath . "app/" . $path)) {
include $basePath . "app/" . $path;
} else {
if (file_exists($basePath . $path)) {
include $basePath . $path;
} else {
die('Error: Cannot find the Layout: ' . $basePath . $path);
}
}
}
<?php
/*
* index.php - invoke the framework
*
* @author Abdul Wahid - awahid@gmail.com
* @version 1.0.0
* @date June 15th, 2015
*/
$loader = dirname(__FILE__) . '/../vendor/autoload.php';
if (file_exists($loader)) {
require $loader;
} else {
echo "<p>Unable to start the framework </p><br/>";
echo "<p>Please run the command composer install from your working directory using your command promt</p>";
echo "<p>For more help about composer, please visit http://getcomposer.org</p>";
exit;
}
//load configurations
use Mist\Helpers\Configurations;
$confPath = dirname(__FILE__) . '/../config/config.php';
Configurations::init($confPath);
//initialize session
use Mist\Helpers\Session;
Session::init();
//router
use Mist\Core\Routing\Router;
$router = new Router();
//define routes
$url = isset($_GET['url']) ? $_GET['url'] : '';
$router->route($url);
/**
* empties and destroys the session
*
* @return void
*/
public static function destroy($key = '')
{
if (self::$sessionStarted == true) {
if (empty($key)) {
session_unset();
session_destroy();
} else {
unset($_SESSION[Configurations::getConf('session')['sessionPrefix'] . "_" . $key]);
}
}
}