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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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* 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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$request = $this->getRequest(); |
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$route = $request->getAttribute('route'); |
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$method = $this->getActionMethod(isset($route->action) ? $route->action : 'default'); |
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if (!method_exists($this, $method)) { |
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return $this->setResponseError(404, 'Not Found'); |
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} |
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try { |
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$args = isset($route->args) ? |
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$route->args : |
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$this->getFunctionArgs($route, new \ReflectionMethod($this, $method)); |
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} catch (\RuntimeException $e) { |
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return $this->setResponseError(400, 'Bad Request'); |
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} |
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$response = call_user_func_array([$this, $method], $args); |
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return $response ?: $this->getResponse(); |
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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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* 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 |
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? $refl->class . ':' . $refl->name |
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: $refl->name; |
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throw new \RuntimeException("Missing argument '$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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* Set response to error state |
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* |
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* @param int $code |
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* @param string $message |
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* @return ResponseInterface |
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*/ |
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protected function setResponseError($code, $message) |
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{ |
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$response = $this->getResponse(); |
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$errorResponse = $response->withStatus($code); |
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$errorResponse->getBody()->write($message); |
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return $errorResponse; |
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} |
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} |
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jasny /
controller
