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<?php |
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namespace Jasny\Controller; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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/** |
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* Execute controller on given route |
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*/ |
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trait RouteAction |
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{ |
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/** |
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* Get request, set for controller |
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* |
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* @return ServerRequestInterface |
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*/ |
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abstract public function getRequest(); |
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/** |
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* Get response. set for controller |
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* |
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* @return ResponseInterface |
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*/ |
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abstract public function getResponse(); |
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/** |
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* Respond with a server error |
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* |
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* @param string $message |
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* @param int $code HTTP status code |
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*/ |
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abstract public function notFound($message = '', $code = 404); |
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/** |
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* Check if response is 2xx succesful, or empty |
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* |
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* @return boolean |
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*/ |
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abstract public function isSuccessful(); |
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/** |
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* Get the route |
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* |
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* @return \stdClass |
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*/ |
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protected function getRoute() |
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{ |
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$route = $this->getRequest()->getAttribute('route'); |
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if (!isset($route)) { |
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throw new \LogicException("Route has not been set"); |
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} |
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if (is_array($route)) { |
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$route = (object)$route; |
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} |
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View Code Duplication |
if (!$route instanceof \stdClass) { |
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$type = (is_object($route) ? get_class($route) . ' ' : '') . gettype($route); |
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throw new \UnexpectedValueException("Expected route to be a stdClass object, not a $type"); |
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} |
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return $route; |
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} |
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/** |
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* Get the method name of the action |
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* |
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* @param string $action |
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* @return string |
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*/ |
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protected function getActionMethod($action) |
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{ |
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return \Jasny\camelcase($action) . 'Action'; |
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} |
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/** |
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* Called before executing the action. |
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* If the response is no longer a success statuc (>= 300), the action will not be executed. |
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* |
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* <code> |
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* protected function beforeAction() |
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* { |
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* $this->respondWith('json'); // Respond with JSON by default |
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* |
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* if ($this->auth->getUser()->getCredits() <= 0) { |
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* $this->paymentRequired(); |
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* } |
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* } |
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* </code> |
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*/ |
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protected function beforeAction() |
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{ |
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} |
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/** |
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* Run the controller |
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* |
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* @return ResponseInterface |
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*/ |
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public function run() |
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{ |
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$route = $this->getRoute(); |
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$method = $this->getActionMethod(isset($route->action) ? $route->action : 'default'); |
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if (!method_exists($this, $method)) { |
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return $this->notFound(); |
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} |
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$this->beforeAction(); |
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if ($this->isSuccessful()) { |
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$args = isset($route->args) ? $route->args |
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: $this->getFunctionArgs($route, new \ReflectionMethod($this, $method)); |
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call_user_func_array([$this, $method], $args); |
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} |
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} |
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/** |
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* Get the arguments for a function from a route using reflection |
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* |
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* @param object $route |
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* @param \ReflectionFunctionAbstract $refl |
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* @return array |
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*/ |
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protected function getFunctionArgs($route, \ReflectionFunctionAbstract $refl) |
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{ |
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$args = []; |
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$params = $refl->getParameters(); |
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foreach ($params as $param) { |
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$key = $param->name; |
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if (property_exists($route, $key)) { |
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$value = $route->$key; |
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} else { |
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if (!$param->isOptional()) { |
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$fn = $refl instanceof \ReflectionMethod ? $refl->class . '::' . $refl->name : $refl->name; |
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throw new \RuntimeException("Missing argument '$key' for {$fn}()"); |
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} |
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$value = $param->isDefaultValueAvailable() ? $param->getDefaultValue() : null; |
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} |
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$args[$key] = $value; |
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} |
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return $args; |
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} |
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} |
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jasny /
controller
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For interface and abstract methods, it is impossible to infer the return type from the immediate code. In these cases, it is generally advisible to explicitly annotate these methods with a
@returndoc comment to communicate to implementors of these methods what they are expected to return.