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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /*  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * 2017 Romain CANON <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This file is part of the TYPO3 FormZ project.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * It is free software; you can redistribute it and/or modify it  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * under the terms of the GNU General Public License, either  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * version 3 of the License, or any later version.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * For the full copyright and license information, see:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * http://www.gnu.org/licenses/gpl-3.0.html  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Romm\Formz\Middleware\Item\Begin;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Romm\Formz\Form\FormInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Romm\Formz\Form\FormObject\FormObjectFactory;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Romm\Formz\Middleware\BasicMiddlewareInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Romm\Formz\Middleware\Processor\MiddlewareProcessor;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Romm\Formz\Middleware\Signal\After;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Romm\Formz\Middleware\Signal\SignalObject;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                final class BeginMiddleware implements BasicMiddlewareInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var MiddlewareProcessor  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $processor;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Initialization of this middleware.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function initialize()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->checkFormSubmission();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * This is the first middleware being called, it will send a signal to all  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * middlewares that depend on it.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function execute()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $signalObject = new SignalObject($this->processor, BeginSignal::class, After::class);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $signalObject->dispatch();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Will check if the current form was submitted by the user. If it is found,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * the form instance is injected in the form object.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function checkFormSubmission()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($this->processor->inSingleFieldValidationContext()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            /*  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             * In "single field validation context", there is no need to check  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             * for the form submission.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $request = $this->processor->getRequest();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $formObject = $this->processor->getFormObject();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $formName = $formObject->getName();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($request->getMethod() === 'POST'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            && $this->processor->getRequestArguments()->hasArgument($formName)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (false === $request->hasArgument('formzData')) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                throw new \Exception('todo'); // @todo | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $form = $this->getFormInstance();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $formObject->setForm($form);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $formzData = $request->getArgument('formzData'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $formObject->getRequestData()->fillFromHash($formzData);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $proxy = FormObjectFactory::get()->getProxy($form);  | 
            
                            
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                            $proxy->markFormAsSubmitted();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->injectFormHashInProxy();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Fetches the form hash from the request data that has been submitted with  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * the form, and injects it in the form proxy.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function injectFormHashInProxy()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $formObject = $this->processor->getFormObject();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $hash = $formObject->getRequestData()->getFormHash();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $proxy = FormObjectFactory::get()->getProxy($formObject->getForm());  | 
            
                            
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                        $proxy->setFormHash($hash);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return FormInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function getFormInstance()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $formName = $this->processor->getFormObject()->getName();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $formArray = $this->processor->getRequest()->getArgument($formName);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $argument = $this->processor->getRequestArguments()->getArgument($formName);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $argument->setValue($formArray)->getValue();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param MiddlewareProcessor $middlewareProcessor  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                        
            
                                    
            
            
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                    final public function bindMiddlewareProcessor(MiddlewareProcessor $middlewareProcessor)  | 
            
            
                                                        
            
                                    
            
            
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                    { | 
            
            
                                                        
            
                                    
            
            
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                        $this->processor = $middlewareProcessor;  | 
            
            
                                                        
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idableprovides a methodequalsIdthat in turn relies on the methodgetId(). If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()as an abstract method to the trait will make sure it is available.