PSR-7 - Middleware - Zend Expressive
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The document introduces PSR-7 and middleware in Zend Expressive. It discusses PSR-7 interfaces like RequestInterface and ResponseInterface that define HTTP messages. It also covers middleware and how middleware can be used to add functionality like authentication. Zend Expressive is introduced as a framework that uses PSR-7 and middleware. It has features like routing, dependency injection and templating. Examples are given of creating middleware for authentication, downloading files, and handling unavailable pages. The document concludes by thanking the reader and providing contact details.
![ ZendExpressiveRouterRouterInterface
• public function addRoute(Route $route);
• public function match(Request $request);
• public function generateUri($name, array $substitutions = []);
InteropContainerContainerInterface
• public function get($id);
• public function has($id);
ZendExpressiveTemplateTemplateRendererInterface
• public function render($name, $params = []);
• public function addPath($path, $namespace = null);
• public function getPaths();
• public function addDefaultParam($templateName, $param, $value);
ZendStratigilityFinalHandler](https://image.slidesharecdn.com/miladarabi-160815164128/85/PSR-7-Middleware-Zend-Expressive-24-320.jpg)
![composer require zendframework/zend-db
config/autoload/db.global.php
config/autoload/db.local.php
config/autoload/routes.global.php
[
'name' => 'user.list',
'path' => '/list',
'middleware'=>AppActionListAction::class,
'allowed_methods' => ['GET'],
],
templates/app/list.html.twig
AppActionListAction
AppActionListActionFactory](https://image.slidesharecdn.com/miladarabi-160815164128/85/PSR-7-Middleware-Zend-Expressive-31-320.jpg)
![<?php
namespace AppAction;
use ...
class ListAction
{
private $adapter;
private $template;
public function __construct(TemplateRendererInterface $template, $adapter)
{
$this->adapter = $adapter;
$this->template = $template;
}
public function __invoke(
ServerRequestInterface $request,
ResponseInterface $response,
callable $next = null
){
$statement = $this->adapter->query('select * from profile');
$users = $statement->execute();
return new HtmlResponse(
$this->template->render('app::list', ['users' => $users])
);
}
}](https://image.slidesharecdn.com/miladarabi-160815164128/85/PSR-7-Middleware-Zend-Expressive-33-320.jpg)
![<?php
namespace AppAction;
use ZendDiactorosResponseJsonResponse;
use PsrHttpMessageResponseInterface;
use PsrHttpMessageServerRequestInterface;
class PingAction
{
public function __invoke(
ServerRequestInterface $request,
ResponseInterface $response,
callable $next = null)
{
return new JsonResponse(['ack' => time()]);
}
}](https://image.slidesharecdn.com/miladarabi-160815164128/85/PSR-7-Middleware-Zend-Expressive-35-320.jpg)
![config/autoload/middleware-pipeline.global.php
'always' => [
'middleware' => [
HelperServerUrlMiddleware::class,
AppMiddlewareAuthMiddleware::class,
],
'priority' => PHP_INT_MAX,
],
config/autoload/dependencies.global.php
'factories' => [
AppMiddlewareAuthMiddleware::class => AppMiddlewareAuthMiddlewareFactory::class,
],
App
Auth](https://image.slidesharecdn.com/miladarabi-160815164128/85/PSR-7-Middleware-Zend-Expressive-37-320.jpg)
![src/App/Middleware/AuthMiddleware.php
<?php
namespace AppMiddleware;
use ...
class AuthMiddleware
{
private $helper;
public function __construct(UrlHelper $helper)
{
$this->helper=$helper;
}
public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next = null)
{
if($this->helper->generate('api.ping')!=$request->getUri()->getPath()) {
$auth = $this->parseAuth($request->getHeaderLine('Authorization'));
if (!$auth or !$this->checkUserPass($auth['user'], $auth['pass'])) {
return $response
->withHeader('WWW-Authenticate', 'Basic realm=""')
->withStatus(401);
}
}
$response = $next($request, $response);
return $response;
}
}](https://image.slidesharecdn.com/miladarabi-160815164128/85/PSR-7-Middleware-Zend-Expressive-38-320.jpg)
![Download Middleware
config/autoload/routes.global.php
[
'name' => 'download',
'path' => '/download/{file:[_0-9a-zA-Z-]+.w{1,}}',
'middleware' => AppActionDownloadAction::class,
'allowed_methods' => ['GET'],
],
AppActionDownloadAction
class DownloadAction
{
public function __invoke($request, $response, $next = null)
{
$file='data'.$request->getUri()->getPath();
if(is_readable($file)){
return $response
->write(file_get_contents($file))
->withHeader(
'Content-Disposition',
'inline; filename="' . pathinfo($file,PATHINFO_BASENAME) . '"'
)
->withHeader('Content-type',pathinfo($file,PATHINFO_EXTENSION))
->withStatus(200);
}else{
return $next($request, $response);
}
}
}](https://image.slidesharecdn.com/miladarabi-160815164128/85/PSR-7-Middleware-Zend-Expressive-39-320.jpg)
![config/autoload/middleware-pipeline.global.php
'middleware' => [
HelperServerUrlMiddleware::class,
AppMiddlewareUnavailableMiddleware::class,
AppMiddlewareAuthMiddleware::class,
],
AppMiddlewareUnavailableMiddleware
public function __invoke($request, $response, callable $next = null)
{
if (date('G') == '23' || (date('G') == '0' && date('i') < '30')) {
return new HtmlResponse($this->template->render('app::unavailable'));
}
$response = $next($request, $response);
return $response;
}
AppMiddlewareUnavailableMiddlewareFactory
templates/app/unavailable.html.twig
config/autoload/dependencies.global.php](https://image.slidesharecdn.com/miladarabi-160815164128/85/PSR-7-Middleware-Zend-Expressive-42-320.jpg)
PSR-7 - Middleware - Zend Expressive
- 2. عربی میالد 8برنامه سال نویسPHP دهنده توسعهBSS/CRM milad.arabi@gmail.com @ooghry Linkedin
- 3. microphp.org I am a PHP developer • I am not a Zend Framework or Symfony or CakePHP developer • I think PHP is complicated enough I like building small things • I like building small things with simple purposes • I like to make things that solve problems • I like building small things that work together to solve larger problems I want less code, not more • I want to write less code, not more • I want to manage less code, not more • I want to support less code, not more • I need to justify every piece of code I add to a project I like simple, readable code • I want to write code that is easily understood • I want code that is easily verifiable
- 9. PHP Standards Recommendations PSR-0(DEPRECATED) Autoloading PSR-1 Basic coding standard PSR-2 Coding style PSR-3 Logger PSR-4 Autoloading PSR-5(DRAFT) PHPDoc Standard PSR-6 Caching Interface PSR-7 HTTP Message Interface PSR-8(DRAFT) Huggable Interface PSR-9(DRAFT) Security Advisories
- 10. <?php namespace SymfonyComponentHttpFoundation; class Request { public static function createFromGlobals() { $request = self::createRequestFromFactory( $_GET, $_POST, array(), $_COOKIE, $_FILES, $server ); return $request; } }
- 11. <?php namespace ZendHttpPhpEnvironment; class Request extends HttpRequest { public function __construct() { $this->setEnv(new Parameters($_ENV)); if ($_GET) { $this->setQuery(new Parameters($_GET)); } if ($_POST) { $this->setPost(new Parameters($_POST)); } if ($_COOKIE) { $this->setCookies(new Parameters($_COOKIE)); } if ($_FILES) { // convert PHP $_FILES superglobal $files = $this->mapPhpFiles(); $this->setFiles(new Parameters($files)); } $this->setServer(new Parameters($_SERVER)); } }
- 13. HTTP Message Interface • PsrHttpMessageMessageInterface o PsrHttpMessageResponseInterface o PsrHttpMessageRequestInterface PsrHttpMessageServerRequestInterface • PsrHttpMessageStreamInterface • PsrHttpMessageUploadFileInterface • PsrHttpMessageUriInterface
- 14. Message ResponseRequestStream Uploaded File Server Request URI extends
- 15. Wrapper Local filesystem file:// HTTP Address http:// https:// FTP ftp:// ftps:// SSL ssl:// tls:// MySQL tcp:// Zip zip:// MongoDB mongodb:// PHP php://input php://output php://temp php://memory <?php file_get_contents('local_file.json'); file_get_contents('http://site.com/file.json');
- 18. function( RequestInterface $request, ResponseInterface $response, callable $next=null ):ReponseInterface
- 19. <?php namespace Mine; class XClacksOverhead { public function __invoke($request, $response, $next) { $response = $next($request, $response); return $response->withHeader( 'X-Clacks-Overhead', 'GNU Terry Pratchett' ); } }
- 21. zend-diactoros https://github.com/zendframework/zend-diactoros PSR-7 HTTP Message implementation zend-stratigility https://github.com/zendframework/zend-stratigility Middleware for PHP built on top of PSR-7
- 22. Zend Expressive •Routing interface •CountainerInterface •Templating Interfaceoptional •Error handlingoptional composer create-project zendframework/zend-expressive-skeleton
- 24. ZendExpressiveRouterRouterInterface • public function addRoute(Route $route); • public function match(Request $request); • public function generateUri($name, array $substitutions = []); InteropContainerContainerInterface • public function get($id); • public function has($id); ZendExpressiveTemplateTemplateRendererInterface • public function render($name, $params = []); • public function addPath($path, $namespace = null); • public function getPaths(); • public function addDefaultParam($templateName, $param, $value); ZendStratigilityFinalHandler
- 27. .1از استفاده با نصبcomposer .2تعریفVirtualHost .3فایل ویرایشhostsویندوز
- 29. Invokable Factory <?php class iClass { public function method1() { return time(); } } <?php class fClass { private $adapter; public function __construct($adapter) { $this->adapter=$adapter; } public function method1() { return $this ->adapter ->someMethod(); } } //-------------------------- class fClassFactory { public function __invoke() { $adapter=new NSAdapterClass; return new fClass($adapter); } }
- 31. composer require zendframework/zend-db config/autoload/db.global.php config/autoload/db.local.php config/autoload/routes.global.php [ 'name' => 'user.list', 'path' => '/list', 'middleware'=>AppActionListAction::class, 'allowed_methods' => ['GET'], ], templates/app/list.html.twig AppActionListAction AppActionListActionFactory
- 32. <?php namespace AppAction; use InteropContainerContainerInterface; use ZendDbAdapterAdapterInterface; use ZendExpressiveTemplateTemplateRendererInterface; class ListActionFactory { public function __invoke(ContainerInterface $container) { $template = ($container->has(TemplateRendererInterface::class)) ? $container->get(TemplateRendererInterface::class) : null; $adapter = ($container->has(AdapterInterface::class)) ? $container->get(AdapterInterface::class) : null; return new ListAction($template,$adapter); } }
- 33. <?php namespace AppAction; use ... class ListAction { private $adapter; private $template; public function __construct(TemplateRendererInterface $template, $adapter) { $this->adapter = $adapter; $this->template = $template; } public function __invoke( ServerRequestInterface $request, ResponseInterface $response, callable $next = null ){ $statement = $this->adapter->query('select * from profile'); $users = $statement->execute(); return new HtmlResponse( $this->template->render('app::list', ['users' => $users]) ); } }
- 35. <?php namespace AppAction; use ZendDiactorosResponseJsonResponse; use PsrHttpMessageResponseInterface; use PsrHttpMessageServerRequestInterface; class PingAction { public function __invoke( ServerRequestInterface $request, ResponseInterface $response, callable $next = null) { return new JsonResponse(['ack' => time()]); } }
- 37. config/autoload/middleware-pipeline.global.php 'always' => [ 'middleware' => [ HelperServerUrlMiddleware::class, AppMiddlewareAuthMiddleware::class, ], 'priority' => PHP_INT_MAX, ], config/autoload/dependencies.global.php 'factories' => [ AppMiddlewareAuthMiddleware::class => AppMiddlewareAuthMiddlewareFactory::class, ], App Auth
- 38. src/App/Middleware/AuthMiddleware.php <?php namespace AppMiddleware; use ... class AuthMiddleware { private $helper; public function __construct(UrlHelper $helper) { $this->helper=$helper; } public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next = null) { if($this->helper->generate('api.ping')!=$request->getUri()->getPath()) { $auth = $this->parseAuth($request->getHeaderLine('Authorization')); if (!$auth or !$this->checkUserPass($auth['user'], $auth['pass'])) { return $response ->withHeader('WWW-Authenticate', 'Basic realm=""') ->withStatus(401); } } $response = $next($request, $response); return $response; } }
- 39. Download Middleware config/autoload/routes.global.php [ 'name' => 'download', 'path' => '/download/{file:[_0-9a-zA-Z-]+.w{1,}}', 'middleware' => AppActionDownloadAction::class, 'allowed_methods' => ['GET'], ], AppActionDownloadAction class DownloadAction { public function __invoke($request, $response, $next = null) { $file='data'.$request->getUri()->getPath(); if(is_readable($file)){ return $response ->write(file_get_contents($file)) ->withHeader( 'Content-Disposition', 'inline; filename="' . pathinfo($file,PATHINFO_BASENAME) . '"' ) ->withHeader('Content-type',pathinfo($file,PATHINFO_EXTENSION)) ->withStatus(200); }else{ return $next($request, $response); } } }
- 42. config/autoload/middleware-pipeline.global.php 'middleware' => [ HelperServerUrlMiddleware::class, AppMiddlewareUnavailableMiddleware::class, AppMiddlewareAuthMiddleware::class, ], AppMiddlewareUnavailableMiddleware public function __invoke($request, $response, callable $next = null) { if (date('G') == '23' || (date('G') == '0' && date('i') < '30')) { return new HtmlResponse($this->template->render('app::unavailable')); } $response = $next($request, $response); return $response; } AppMiddlewareUnavailableMiddlewareFactory templates/app/unavailable.html.twig config/autoload/dependencies.global.php
- 44. متشکرم PSR-7وmiddleware-معرفی و هاZend Expressive عربی میالد milad.arabi@gmail.com @ooghry Linkedin https://github.com/ooghry/Zend-Expressive-CoderConf