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Mosaab4Mosaab4
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‎Application.php‎

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<?php
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namespace App\Core;
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use App\Core\DB\Database;
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use Exception;
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class Application
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{
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public static string $ROOT_DIR;
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public static Application $app;
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public string $layout = 'main';
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public string $userClass;
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public Router $router;
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public Request $request;
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public Response $response;
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public ?Controller $controller = null;
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public Database $db;
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public Session $session;
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public ?UserModel $user;
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public View $view;
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public function __construct($rootPath, array $config)
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{
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$this->userClass = $config['userClass'];
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self::$ROOT_DIR = $rootPath;
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self::$app = $this;
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$this->request = new Request();
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$this->response = new Response();
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$this->session = new Session();
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$this->router = new Router($this->request, $this->response);
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$this->view = new View();
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$this->db = new Database($config['db']);
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$primaryValue = $this->session->get('user');
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if ($primaryValue) {
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$primaryKey = $this->userClass::primaryKey();
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$this->user = $this->userClass::findOne([$primaryKey => $primaryValue]);
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} else {
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$this->user = null;
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}
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}
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public static function isGuest(): bool
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{
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return !self::$app->user;
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}
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public function run()
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{
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try {
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echo $this->router->resolve();
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} catch (Exception $e) {
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$this->response->setStatusCode($e->getCode());
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echo $this->view->renderView('_error', [
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'e' => $e
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]);
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}
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}
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public function login(UserModel $user): bool
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{
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$this->user = $user;
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$primaryKey = $user->primaryKey();
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$primaryValue = $user->{$primaryKey};
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$this->session->set('user', $primaryValue);
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return true;
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}
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public function logout()
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{
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$this->user = null;
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$this->session->remove('user');
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}
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}

‎Controller.php‎

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<?php
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namespace App\Core;
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use App\Core\Middlewares\BaseMiddleware;
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class Controller
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{
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public string $layout = 'main';
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public string $action = '';
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/** @var BaseMiddleware[] */
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protected array $middlewares = [];
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public function registerMiddleware(BaseMiddleware $middleware)
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{
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$this->middlewares[] = $middleware;
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}
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public function setLayout($layout)
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{
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$this->layout = $layout;
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}
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public function render($view, $params = [])
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{
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return Application::$app->view->renderView($view, $params);
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}
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/**
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* @return BaseMiddleware[]
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*/
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public function getMiddlewares(): array
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{
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return $this->middlewares;
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}
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}

‎DB/Database.php‎

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<?php
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namespace App\Core\DB;
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use App\Core\Application;
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use PDO;
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class Database
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{
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public PDO $pdo;
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public function __construct(array $config)
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{
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$dsn = $config['dsn'] ?? '';
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$user = $config['user'] ?? '';
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$password = $config['password'] ?? '';
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$this->pdo = new PDO($dsn, $user, $password);
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$this->pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
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}
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public function applyMigrations()
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{
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$this->createMigrationsTable();
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$appliedMigrations = $this->getAppliedMigrations();
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$files = scandir(Application::$ROOT_DIR . '/migrations');
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$toApplyMigrations = array_diff($files, $appliedMigrations);
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$newMigrations = [];
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foreach ($toApplyMigrations as $migration) {
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if ($migration === '.' || $migration === '..') {
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continue;
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}
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require_once Application::$ROOT_DIR . '/migrations/' . $migration;
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$className = pathinfo($migration, PATHINFO_FILENAME);
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$instance = new $className();
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$this->log("Applying migration $migration");
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$instance->up();
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$this->log("Applied migration $migration");
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$newMigrations[] = $migration;
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}
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if (!empty($newMigrations)) {
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$this->saveMigrations($newMigrations);
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} else {
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$this->log("All Migrations are applied");
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}
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}
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public function createMigrationsTable()
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{
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$this->pdo->exec("
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CREATE TABLE IF NOT EXISTS migrations(
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id INT AUTO_INCREMENT PRIMARY KEY,
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migration VARCHAR(255),
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
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)
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ENGINE=INNODB;
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");
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}
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public function getAppliedMigrations()
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{
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$statement = $this->pdo->prepare("SELECT migration from migrations");
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$statement->execute();
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return $statement->fetchAll(PDO::FETCH_COLUMN);
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}
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protected function log($message)
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{
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echo '[' . date('Y-m-d H:i:s') . '] - ' . $message . PHP_EOL;
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}
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public function saveMigrations(array $migrations)
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{
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$str = implode(",", array_map(fn($migration) => "('$migration')", $migrations));
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$statement = $this->pdo->prepare("
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INSERT INTO migrations (migration) VALUES
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$str
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");
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$statement->execute();
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}
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public function prepare($sql)
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{
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return $this->pdo->prepare($sql);
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}
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}

‎DB/DbModel.php‎

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<?php
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namespace App\Core\DB;
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use App\Core\Application;
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use App\Core\Model;
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abstract class DbModel extends Model
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{
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public static function findOne(array $where)
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{
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$tableName = static::tableName();
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$attributes = array_keys($where);
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$sql = implode("AND", array_map(fn($attr) => "$attr = :$attr", $attributes));
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$statement = self::prepare("SELECT * FROM $tableName WHERE $sql");
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foreach ($where as $key => $value) {
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$statement->bindValue(":$key", $value);
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}
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$statement->execute();
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return $statement->fetchObject(static::class);
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}
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public function save(): bool
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{
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$tableName = $this->tableName();
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$attributes = $this->attributes();
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$params = array_map(fn($p) => ":$p", $attributes);
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$statement = self::prepare("INSERT INTO $tableName (" . implode(',', $attributes) . ") VALUES (" . implode(',', $params) . ")");
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foreach ($attributes as $attribute) {
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$statement->bindValue(":$attribute", $this->{$attribute});
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}
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$statement->execute();
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return true;
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}
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abstract public function tableName(): string;
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abstract public function attributes(): array;
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public static function prepare($sql)
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{
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return Application::$app->db->pdo->prepare($sql);
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}
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abstract public function primaryKey(): string;
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}

‎Exceptions/ForbiddenException.php‎

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<?php
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namespace App\Core\Exceptions;
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class ForbiddenException extends \Exception
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{
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protected $code = 403;
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protected $message = "You don't have permission to access this page";
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}

‎Exceptions/NotFoundException.php‎

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<?php
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namespace App\Core\Exceptions;
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class NotFoundException extends \Exception
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{
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protected $code = 404;
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protected $message = 'Not Found';
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}

‎Form/BaseField.php‎

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<?php
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namespace App\Core\Form;
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use App\Core\Model;
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abstract class BaseField
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{
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public Model $model;
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public string $attribute;
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public function __construct(Model $model, string $attribute)
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{
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$this->model = $model;
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$this->attribute = $attribute;
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}
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public function __toString()
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{
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return sprintf('
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<div class="form-group">
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<label>%s</label>
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%s
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<div class="invalid-feedback">
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%s
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</div>
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</div>
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',
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$this->model->getLabel($this->attribute),
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$this->renderInput(),
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$this->model->getFirstError($this->attribute)
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);
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}
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abstract public function renderInput(): string;
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}

‎Form/Form.php‎

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<?php
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namespace App\Core\Form;
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use App\Core\Model;
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class Form
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{
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public static function begin($action, $method): Form
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{
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echo sprintf('<form action="%s" method="%s">' , $action, $method);
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return new self();
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}
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public static function end(): void
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{
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echo '</form>';
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}
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public function field(Model $model , $attribute): InputField
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{
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return new InputField($model, $attribute);
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}
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}

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