Completed
Push — unit-tests-conditions ( a23049...dc9eee )
by Romain
02:30
created

AbstractFormValidator::validateWithoutSavingResults()   A

Complexity

Conditions 2
Paths 2

Size

Total Lines 16
Code Lines 9

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
c 0
b 0
f 0
dl 0
loc 16
rs 9.4285
cc 2
eloc 9
nc 2
nop 1
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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\Validation\Validator\Form;
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use Romm\Formz\Configuration\Form\Field\Field;
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use Romm\Formz\Core\Core;
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use Romm\Formz\Error\FormResult;
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use Romm\Formz\Exceptions\InvalidArgumentTypeException;
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use Romm\Formz\Form\FormInterface;
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use Romm\Formz\Service\FormService;
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use TYPO3\CMS\Extbase\Validation\Validator\AbstractValidator as ExtbaseAbstractValidator;
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/**
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 * This is the abstract form validator, which must be inherited by any custom
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 * form validator in order to work properly.
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 *
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 * Please note that a default form validator already exists if you need a form
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 * which does not require any particular action: `DefaultFormValidator`.
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 *
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 * A form validator should be called to validate any form instance (which is a
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 * child of `AbstractForm`). Usually, this is used in controller actions to
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 * validate a form sent by the user. Example:
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 *
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 * /**
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 *  * Action called when the Example form is submitted.
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 *  *
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 *  * @param $exForm
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 *  * @validate $exForm Romm.Formz:Form\DefaultFormValidator
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 *  * /
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 *  public function submitFormAction(ExampleForm $exForm) { ... }
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 *
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 *******************************************************************************
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 *
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 * You may use you own custom form validator in order to be able to use the
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 * following features:
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 *
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 * - Pre-validation custom process:
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 *   By extending the method `beforeValidationProcess()`, you are able to handle
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 *   anything you want just before the form validation begins to loop on every
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 *   field. This can be used for instance to (de)activate the validation of
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 *   certain fields under very specific circumstances.
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 *
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 * - In real time custom process:
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 *   After each field went trough a validation process, a magic method is called
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 *   to allow very low level custom process. The magic method name looks like:
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 *   "{lowerCamelCaseFieldName}Validated". For instance, when the "email" field
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 *   just went trough the validation process, the method `emailValidated()` is
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 *   called.
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 *
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 * - Post-validation custom process:
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 *   After the validation was done on every field of the form, this method is
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 *   called to allow you high level process. For instance, let's assume your
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 *   form is used to calculate a price estimation depending on information
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 *   submitted in the form; when the form went trough the validation process and
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 *   got no error, you can run the price estimation, and if any error occurs you
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 *   are still able to add an error to `$this->result` (in a controller you do
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 *   not have access to it anymore).
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 */
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abstract class AbstractFormValidator extends ExtbaseAbstractValidator implements FormValidatorInterface
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{
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    /**
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     * @inheritdoc
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     */
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    protected $supportedOptions = [
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        'name' => ['', 'Name of the form.', 'string', true]
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    ];
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    /**
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     * @var FormResult
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     */
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    protected $result;
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    /**
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     * @var FormValidatorExecutor
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     */
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    protected $formValidatorExecutor;
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    /**
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     * Checks the given form instance, and launches the validation if it is a
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     * correct form.
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     *
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     * @param FormInterface $form The form instance to be validated.
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     * @return FormResult
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     */
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    final public function validate($form)
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    {
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        $this->validateWithoutSavingResults($form);
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        $this->formValidatorExecutor->saveValidationResult();
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        return $this->result;
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    }
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    /**
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     * @param FormInterface $form
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     * @return FormResult
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     * @throws InvalidArgumentTypeException
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     */
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    public function validateWithoutSavingResults($form)
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    {
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        if (false === $form instanceof FormInterface) {
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            throw new InvalidArgumentTypeException(
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                'Trying to validate a form that does not implement the interface "' . FormInterface::class . '". Given class: "' . get_class($form) . '"',
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                1487865158
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            );
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        }
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        $this->result = new FormResult;
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        $this->formValidatorExecutor = $this->getFormValidatorExecutor($form);
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        $this->isValid($form);
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        return $this->result;
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    }
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    /**
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     * Runs the whole validation workflow.
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     *
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     * @param FormInterface $form
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     */
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    final public function isValid($form)
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    {
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        $this->formValidatorExecutor->applyBehaviours();
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        $this->formValidatorExecutor->checkFieldsActivation();
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        $this->beforeValidationProcess();
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        $this->formValidatorExecutor->validateFields(function (Field $field) {
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            $this->callAfterFieldValidationMethod($field);
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        });
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        $this->afterValidationProcess();
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        if ($this->result->hasErrors()) {
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            // Storing the form for possible third party further usage.
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            FormService::addFormWithErrors($form);
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        }
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    }
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    /**
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     * Use this function to (de)activate the validation for some given fields.
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     */
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    protected function beforeValidationProcess()
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    {
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    }
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    /**
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     * Use this function to run your own processes after the validation ran.
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     */
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    protected function afterValidationProcess()
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    {
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    }
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    /**
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     * After each field has been validated, a matching method can be called if
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     * it exists in the child class.
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     *
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     * The syntax is `{lowerCamelCaseFieldName}Validated()`.
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     *
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     * Example: for field `firstName` - `firstNameValidated()`.
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     *
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     * @param Field $field
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     */
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    private function callAfterFieldValidationMethod(Field $field)
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    {
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        $functionName = lcfirst($field->getFieldName() . 'Validated');
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        if (method_exists($this, $functionName)) {
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            call_user_func([$this, $functionName]);
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        }
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    }
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    /**
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     * @param FormInterface $form
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     * @return FormValidatorExecutor
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     */
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    protected function getFormValidatorExecutor(FormInterface $form)
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    {
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        /** @var FormValidatorExecutor $formValidatorExecutor */
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        $formValidatorExecutor = Core::instantiate(FormValidatorExecutor::class, $form, $this->options['name'], $this->result);
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        return $formValidatorExecutor;
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    }
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}
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