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MVCモデルを作成する方法を学習しようとしていますが、次のエラーがあります： Notice：申し訳ありません......./pdodatabasehandler.php 27 致命的なエラーが発見された：で..../abstractmodel.php 98致命的なエラー：ヌルでメンバー関数execute（）を呼び出すと..../abstractmodel.php 98
databasehandler.php
ヌルに）（実行メンバ関数の呼び出し<?php
namespace BATRAHOSTMVC\Lib\Database;
/**
* Description of DatabaseHandler
*
* @author Mohamed Hassan Elmetwaly
* 25-03-2017
* [email protected]
*/
abstract class DatabaseHandler {
const DATABASE_DRIVER_POD = 1;
const DATABASE_DRIVER_MYSQLI = 2;
private function __construct() {
}
abstract protected static function init();
abstract protected static function getInstance();
public static function factory()
{
// $driver = DATABASE_CONN_DRIVER;
// if($driver == self::DATABASE_DRIVER_POD)
// {
return PDODatabaseHandler::getInstance();
// } else if ($driver == self::DATABASE_DRIVER_MYSQLI)
// {
// return MySQLiDatabaseHandler::getInstance();
// }
}
}
pdodatabasehandler.php
<?php
namespace BATRAHOSTMVC\Lib\Database;
/**
* Description of pdodatabasehandler
* @author Mohamed Hassan Elmetwaly
* 25-03-2017
* [email protected]
*/
class PDODatabaseHandler extends DatabaseHandler
{
private static $_instance;
private static $_handler;
private function __construct() {
self::init();
}
//public function __call($name, $arguments) {}
public function __call($name, $arguments) {
if(method_exists($this, $name))
{
$this->$name($arguments);
} else {
trigger_error('Sorry no method '. $name. ' has been found');
}
}
protected static function init(){
try{
self::$_handler = new \PDO(
'mysql:host='.DATABASE_HOST_NAME.';dbname='.DATABASE_DB_NAME,DATABASE_USER_NAME,
DATABASE_PASSW0RD);
//var_dump(self::$_handler);
//self::$_handler = new pdo("mysql:host=localhost; dbname=test", 'root', 'rootbootroot');
//return 'Connected';
} catch (\PDOException $e)
{
echo $e->getMessage() ." | ". $e->getCode() ;
}
}
public static function getInstance() {
if(self::$_instance === null){
self::$_instance = new self();
}
return self::$_instance;
}
}
<?php
namespace BATRAHOSTMVC\Models;
//use BATRAHOSTMVC\Models\AbstractModel;
//use BATRAHOSTMVC\Models\AbstractModel;
/**
* Description of employee
* @author Mohamed Hassn Elmetwaly (25-03-2017)
* [email protected]
*/
class EmployeeModel extends AbstractModel
{
public $id;
public $name;
public $age;
public $address;
public $tax;
public $salary;
public static $db;
protected static $tableName = 'employees';
protected static $tableSchema = array(
'name' => self::DATA_TYPE_STR,
'age' => self::DATA_TYPE_INT,
'address' => self::DATA_TYPE_STR,
'tax' => self::DATA_TYPE_DECIMAL,
'salary' => self::DATA_TYPE_DECIMAL
);
protected static $primaryKey = 'id';
public function __construct($name, $age, $address, $tax, $salary) {
$this->name = $name;
$this->age = $age;
$this->address = $address;
$this->tax = $tax;
$this->salary = $salary;
}
public function __get($prop){
$this->$prop;
}
public function getTableName(){
return self::$tableName;
}
}
<?php
/**
* Description of abstractcontroller
*
* @author Mohamed Hassn Elmetwaly (25-03-2017)
* [email protected]
*/
namespace BATRAHOSTMVC\Controllers;
use BATRAHOSTMVC\Models\EmployeeModel;
class EmployeeController extends AbstractController
{
public function defaultAction()
{
//EmployeeModel::getAll();
var_dump(EmployeeModel::getAll());
$this->_view();
}
}
employeecontroller.php
<?php
namespace BATRAHOSTMVC\Models;
use BATRAHOSTMVC\Lib\Database\DatabaseHandler;
//echo DATABASE_DB_NAME;
/**
* Description of abstractmodel
* @author Mohamed Hassn Elmetwaly (25-03-2017)
* [email protected]
*/
class AbstractModel
{
const DATA_TYPE_BOOL = \PDO::PARAM_BOOL;
const DATA_TYPE_STR = \PDO::PARAM_STR;
const DATA_TYPE_INT = \PDO::PARAM_INT;
const DATA_TYPE_DECIMAL = 4;
const DATA_TYPE_DATE = 5;
/*
public static function viewTableSchema()
{
return static::$tableSchema;
}
*
*/
// we make path by reference
private function prepareValues(\PDOStatement &$stmt)
{
foreach (static::$tableSchema as $columnName => $type)
{
if($type == 4)
{
$sanitizedValue = filter_var($this->$columnName, FILTER_SANITIZE_NUMBER_FLOAT, FILTER_FLAG_ALLOW_FRACTION);
$stmt->bindValue(":{$columnName}", $sanitizedValue);
}
else
{
$stmt->bindValue(":{$columnName}", $this->$columnName, $type);
}
}
}
private static function buildNameParametersSQL()
{
$nameParams = '';
//$columnName (Column Name) => $type (Column datatype)
foreach (static::$tableSchema as $columnName => $type)
{
$nameParams .= $columnName. ' = :'.$columnName. ', ';
}
return trim($nameParams, ', ');
}
private static function create()
{
//global $connection;
$sql = 'INSERT INTO '. static::$tableName . ' SET '. self::buildNameParametersSQL();
$stmt = DatabaseHandler::factory()->prepare($sql);
$this->prepareValues($stmt);
return $stmt->execute(); // true of false
}
private static function update()
{
// global $connection;
$sql = 'UPDATE '. static::$tableName . ' SET '. self::buildNameParametersSQL(). ' WHERE '. static::$primaryKey .' = '.$this->{static::$primaryKey};
// $stmt = $connection->prepare($sql);
//$stmt = DatabaseHandler::factory()->prepare($sql);
$stmt = DatabaseHandler::factory()->prepare($sql);
$this->prepareValues($stmt);
return $stmt->execute(); // true of false
}
public function save()
{
return $this->{static::$primaryKey} === null ? $this->create() : $this->update();
}
public static function delete()
{
// global $connection;
$sql = 'DELETE FROM '. static::$tableName . ' WHERE '. static::$primaryKey .' = '.$this->{static::$primaryKey};
// $stmt = $connection->prepare($sql);
$stmt = DatabaseHandler::factory()->prepare($sql);
return $stmt->execute(); // true of false
}
public static function getAll()
{
// global $connection;
$sql = 'SELECT * FROM '. static::$tableName;
//$stmt = $connection->prepare($sql);
$stmt = DatabaseHandler::factory()->prepare($sql);
//return $connection->execute() === true ? $stmt->fetchAll(\PDO::FETCH_CLASS | \PDO::FETCH_PROPS_LATE, 'Employee', array('name', 'age', 'address', 'tax', 'salary')) : false;
//using fetchAll with this paramaters return values as OBJECT Of class which returned by get_called_calss() which called this method
$stmt->execute();
$result = $stmt->fetchAll(\PDO::FETCH_CLASS | \PDO::FETCH_PROPS_LATE, get_called_class(), array_keys(static::$tableSchema));
return is_array($result) && !empty($result) === true ? $result : false;
}
public static function getByPk($pk)
{
//global $connection;
$sql = 'SELECT * FROM '. static::$tableName. ' WHERE '. static::$primaryKey .' = '.$pk;
//$stmt = $connection->prepare($sql);
//$stmt = DatabaseHandler::factory()->prepare($sql);
$stmt = DatabaseHandler::factory()->prepare($sql);
//return $connection->execute() === true ? $stmt->fetchAll(\PDO::FETCH_CLASS | \PDO::FETCH_PROPS_LATE, 'Employee', array('name', 'age', 'address', 'tax', 'salary')) : false;
//using fetchAll with this paramaters return values as OBJECT Of class which returned by get_called_calss() which called this method
if($connection->execute() === true)
{
$obj = $stmt->fetchAll(\PDO::FETCH_CLASS | \PDO::FETCH_PROPS_LATE, get_called_class(), array_keys(static::$tableSchema));
return array_shift($obj);
}
return false;
}
public static function get($sql, $options = array())
{
/*
* example:
* $emps = Employee::get(
* 'SELECT name, age FROM employees WHERE age = :age',
* array(
* 'age' => array(Employee::DATA_TYPE_INT, 34)
*)
*)
* var_dump($emps)
*/
//global $connection;
//$stmt = $connection->prepare($sql);
$stmt = DatabaseHandler::factory()->prepare($sql);
if(!empty($options))
{
foreach ($options as $columnName => $type)
{
//$type[0] = datatype, $type[1] = columname
if($type[0] == 4)
{
$sanitizedValue = filter_var($type[1], FILTER_SANITIZE_NUMBER_FLOAT, FILTER_FLAG_ALLOW_FRACTION);
$stmt->bindValue(":{$columnName}", $sanitizedValue);
}
else
{
$stmt->bindValue(":{$columnName}", $type[1], $type[0]);
}
}
}
$stmt->execute();
$result = $stmt->fetchAll(\PDO::FETCH_CLASS | \PDO::FETCH_PROPS_LATE, get_called_class(), array_keys(static::$tableSchema));
return is_array($result) && !empty($result) === true ? $result : false;
/*
if(method_exists(get_called_class(), '__construct')){
$result = $stmt->fetchAll(\PDO::FETCH_CLASS | \PDO::FETCH_PROPS_LATE, get_called_class(), array_keys(static::$tableSchema));
//return is_array($result) && !empty($result) === true ? $result : false;
} else {
$result =$stmt->fetchAll(\PDO::FETCH_CLASS, get_called_class());
}
if((is_array($result) && !empty($result))){
$generator = function() use ($result){};
return $generator;
}
return false;
*/
}
}
abstractmodel.php
autoload.php
<?php
namespace BATRAHOSTMVC\LIB;
/*
* Applcation Constants
*/
/*
define('DS', DIRECTORY_SEPARATOR);
define('APP_PATH', dirname(realpath(__FILE__)).DS.'..');
define('PS', PATH_SEPARATOR);
define('CONTROLLER_PATH', APP_PATH.DS.'controllers');
define('MODEL_PATH', APP_PATH.DS.'models');
//echo CONTROLLER_PATH;
$path = get_include_path().PS.CONTROLLER_PATH.PS.MODEL_PATH;
set_include_path($path);
*/
class Autoload
{
public static function autoload($classname)
{
/* in Explanation */
$classname = str_replace('BATRAHOSTMVC', '',$classname);
$classname = str_replace('\\', '/', $classname);
$classname = $classname.'.php';
$classname = strtolower($classname);
if(file_exists(APP_PATH.$classname))
{
require_once APP_PATH.$classname;
}
/*
$class = str_replace('\\', '/', $classname);
$classFile = APP_PATH.DIRECTORY_SEPARATOR.strtolower($class).'.php';
if(file_exists($classFile))
{
require $classFile;
}
else
{
return;
}
*/
}
}
spl_autoload_register(__NAMESPACE__.'\Autoload::autoload');
frontcontroller.php
<?php
namespace BATRAHOSTMVC\LIB;
class FrontController
{
const NOT_FOUND_ACTION = 'notFoundAction';
const NOT_FOUND_CONTROLLER = 'BATRAHOSTMVC\Controllers\NotFoundController';
private $_controller = 'index';
private $_action = 'default';
private $_params = array();
public function __construct() {
$this->_parseUrl();
}
private function _parseUrl()
{
$url = explode('/', trim(parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH),'/'), 3);
var_dump($url);
if(isset($url[0]) && $url[0] !='')
{
$this->_controller = $url[0];
}
if(isset($url[1]) && $url[1] !='')
{
$this->_action = $url[1];
}
if(isset($url[2]) && $url[2] !='')
{
$this->_params = explode('/', $url[2]);
}
// @list($this->_controller, $this->_action, $this->_params) = explode('/', trim($url, '/'),3);
// $this->_params = explode('/', $this->_params);
var_dump($this);
}
public function dispatch()
{
$controllerClassName = 'BATRAHOSTMVC\Controllers\\'.ucfirst($this->_controller).'Controller';
$actionName = $this->_action.'Action';
if(!class_exists($controllerClassName))
{
$controllerClassName = self::NOT_FOUND_CONTROLLER;
}
$controller = new $controllerClassName();
if(!method_exists($controller, $actionName))
{
$this->_action = $actionName = self::NOT_FOUND_ACTION;
}
$controller->setController($this->_controller);
$controller->setAction($this->_action);
$controller->setParams($this->_params);
$controller->$actionName();
}
}
私は、事前に次のリンクで http://www.mediafire.com/file/mdbxj5o3f6hd3gz/mvcyahia%285-4-2017%29.rar
おかげで、私のファイルを添付
rarをダウンロードしていません。他の人はここにいません。 [編集]あなたの質問と_relevant_コードを投稿します。また、コードの不足のために閉会することを投票しました。あなたは明らかにヌルオブジェクトのメソッドを呼び出そうとしています。 –
MVCアプリケーションほど複雑なものを試す前に、基本的なデバッグ技術に時間を費やす必要があります。 –