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<?php |
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namespace Charcoal\Admin; |
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// From PSR-7 |
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use Psr\Http\Message\RequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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// From 'charcoal-app' |
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use Charcoal\App\Handler\HandlerInterface; |
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use Charcoal\App\Module\AbstractModule; |
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// From 'charcoal-admin' |
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use Charcoal\Admin\ServiceProvider\AdminServiceProvider; |
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/** |
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* Charcoal Administration Module |
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*/ |
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class AdminModule extends AbstractModule |
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{ |
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/** |
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* Charcoal Administration Setup. |
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* |
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* This module is bound to the `/admin` URL. |
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* |
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* ## Provides |
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* |
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* - `charcoal/admin/module` An instance of this module |
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* - Exact type: `\Charcoal\Admin\AdminModule` |
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* - which implements `\Charcoal\Module\ModuleInterface` |
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* |
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* ## Dependencies |
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* - `charcoal/config` Provided by \Charcoal\CharcoalModule |
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* |
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* @return AdminModule Chainable |
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*/ |
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public function setup() |
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{ |
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// Hack: skip if the request does not start with '/admin' |
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$container = $this->app()->getContainer(); |
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if (substr(ltrim($container['request']->getUri()->getPath(), '/'), 0, 5) !== 'admin') { |
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return $this; |
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} |
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// A session is necessary for the admin module |
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if (session_id() === '') { |
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session_start(); |
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} |
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$container->register(new AdminServiceProvider()); |
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$module = $this; |
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$container['charcoal/admin/module'] = function ($c) use ($module) { |
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return $module; |
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}; |
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$adminConfig = $container['admin/config']; |
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$this->setConfig($adminConfig); |
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$groupIdent = '/'.trim($adminConfig['base_path'], '/'); |
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// Add the route group |
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$this->app()->group($groupIdent, 'charcoal/admin/module:setupRoutes') |
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->add('charcoal/admin/module:setupHandlers'); |
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return $this; |
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} |
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/** |
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* Set up the module's routes and handlers. |
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* |
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* @return AdminModule Chainable |
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*/ |
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public function setupRoutes() |
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{ |
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if ($this->routeManager === null) { |
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parent::setupRoutes(); |
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// Serve the Admin's "Not Found" handler for the Admin's route group. |
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$this->app()->any('{catchall:.*}', 'notFoundHandler'); |
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} |
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return $this; |
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} |
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/** |
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* Set up the module's handlers, via group middleware. |
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* |
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* @param RequestInterface $request A PSR7 request object. |
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* @param ResponseInterface $response A PSR7 response object. |
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* @param callable $next The next callable middleware. |
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* @return ResponseInterface A PSR7 response object. |
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*/ |
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public function setupHandlers( |
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RequestInterface $request, |
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ResponseInterface $response, |
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callable $next |
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) { |
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$container = $this->app()->getContainer(); |
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/** |
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* HTTP 404 (Not Found) handler. |
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* |
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* @param object|HandlerInterface $handler An error handler instance. |
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* @return HandlerInterface |
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*/ |
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$container->extend('notFoundHandler', function ($handler, $container) { |
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$appConfig = $container['config']; |
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$adminConfig = $container['admin/config']; |
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if ($handler instanceof HandlerInterface) { |
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$config = $handler->createConfig($appConfig['handlers.defaults']); |
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$config->merge($adminConfig['handlers.defaults']); |
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if (!empty($adminConfig['handlers.notFound'])) { |
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$config->merge($adminConfig['handlers.notFound']); |
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} |
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$handler->setConfig($config)->init(); |
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} |
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return $handler; |
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}); |
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/** |
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* HTTP 405 (Not Allowed) handler. |
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* |
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* @param object|HandlerInterface $handler An error handler instance. |
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* @return HandlerInterface |
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*/ |
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$container->extend('notAllowedHandler', function ($handler, $container) { |
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$appConfig = $container['config']; |
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$adminConfig = $container['admin/config']; |
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if ($handler instanceof HandlerInterface) { |
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$config = $handler->createConfig($appConfig['handlers.defaults']); |
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$config->merge($adminConfig['handlers.defaults']); |
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if (!empty($adminConfig['handlers.notAllowed'])) { |
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$config->merge($adminConfig['handlers.notAllowed']); |
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} |
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$handler->setConfig($config)->init(); |
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} |
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return $handler; |
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}); |
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/** |
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* HTTP 500 (Error) handler for PHP 7+ Throwables. |
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* |
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* @param object|HandlerInterface $handler An error handler instance. |
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* @return HandlerInterface |
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*/ |
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$container->extend('phpErrorHandler', function ($handler, $container) { |
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$appConfig = $container['config']; |
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$adminConfig = $container['admin/config']; |
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if ($handler instanceof HandlerInterface) { |
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$config = $handler->createConfig($appConfig['handlers.defaults']); |
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$config->merge($adminConfig['handlers.defaults']); |
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if (!empty($adminConfig['handlers.phpError'])) { |
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$config->merge($adminConfig['handlers.phpError']); |
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} |
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$handler->setConfig($config)->init(); |
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} |
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return $handler; |
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}); |
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/** |
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* HTTP 500 (Error) handler. |
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* |
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* @param object|HandlerInterface $handler An error handler instance. |
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* @return HandlerInterface |
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*/ |
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$container->extend('errorHandler', function ($handler, $container) { |
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$appConfig = $container['config']; |
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$adminConfig = $container['admin/config']; |
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if ($handler instanceof HandlerInterface) { |
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$config = $handler->createConfig($appConfig['handlers.defaults']); |
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$config->merge($adminConfig['handlers.defaults']); |
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if (!empty($adminConfig['handlers.error'])) { |
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$config->merge($adminConfig['handlers.error']); |
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} |
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$handler->setConfig($config)->init(); |
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} |
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return $handler; |
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}); |
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/** |
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* HTTP 503 (Service Unavailable) handler. |
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* |
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* This handler is not part of Slim. |
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* |
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* @param object|HandlerInterface $handler An error handler instance. |
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* @return HandlerInterface |
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*/ |
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$container->extend('maintenanceHandler', function ($handler, $container) { |
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$appConfig = $container['config']; |
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$adminConfig = $container['admin/config']; |
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if ($handler instanceof HandlerInterface) { |
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$config = $handler->createConfig($appConfig['handlers.defaults']); |
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$config->merge($adminConfig['handlers.defaults']); |
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if (!empty($adminConfig['handlers.maintenance'])) { |
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$config->merge($adminConfig['handlers.maintenance']); |
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} |
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$handler->setConfig($config)->init(); |
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} |
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return $handler; |
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}); |
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return $next($request, $response); |
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} |
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} |
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In the issue above, the returned value is violating the contract defined by the mentioned interface.
Let's take a look at an example: