productArticle\default.latte

{block content}

{control articleForm}

ProductArticlePresenter.php

<?php declare(strict_types=1);

namespace App\Presenters;

use Nette\Application\UI\Form;
use Nette\Application\UI\Presenter;
use Nette\Forms\Controls\TextInput;
use Nette\Utils\DateTime;

class ProductArticlePresenter extends Presenter
{
    public function actionDefault(string $serialNumber = null)
    {
        if ($serialNumber) {
            if (!($data = $this->loadDataBySN($serialNumber))) {
                $this->flashMessage("Serial number $serialNumber is not valid");
                $this->redirect('this', [null]);
            }

            /** @var Form $articleForm */
            $articleForm = $this['articleForm'];
            $articleForm->setDefaults($data);
        }
    }


    public function createComponentArticleForm()
    {
        $form = new Form();

        $sn = $form->addText('serialNumber', 'SN');
        $sn->addRule(function (TextInput $textInput) {
            $error = $this->validateSerialNumber($textInput->getValue());
            if ($error) {
                $textInput->addError($error);
                return false;
            }

            return true;
        }, 'Serial number invalid');

        $form->addSubmit('loadProductBySN', 'Load by SN');

        $form->addSelect('product', 'Product', $this->loadProducts());
        $form->addText('configuration', 'Configuration');
        $form->addText('manufacturedOn', 'Manufactured date');

        $form->addSubmit('save', 'Save article');

        $form->onSuccess[] = function (Form $form, $values) {
            if ($form->isSubmitted() == $form['loadProductBySN']) {
                $this->redirect('this', $values['serialNumber']);
            }

            $this->saveArticle($form, $values);
        };

        return $form;
    }

    private function loadProducts()
    {
        return [
            'p1' => 'Teapot',
            'p2' => 'Fridge',
            'p3' => 'Pizza oven',
        ];
    }

    private function loadDataBySN($serialNumber)
    {
        if ($this->validateSerialNumber($serialNumber)) {
            return null;
        }

        list($productId, $configuration) = explode(':', $serialNumber);

        return [
            'serialNumber' => $serialNumber,
            'product' => $productId,
            'configuration' => $configuration,
            'manufacturedOn' => (new DateTime())->modify('-30 days')->format('Y-m-d'),
        ];
    }

    /** @return string error message or null */
    public function validateSerialNumber($value)
    {
        $parts = explode(':', $value);
        if (count($parts) != 2) {
            return 'invalid-sn-format';
        }
        if (!isset($this->loadProducts()[$parts[0]])) {
            return 'unknown-product';
        }

        return null;
    }

    private function saveArticle(Form $form, $values)
    {
        $sn = $values['product'] . ':' . $values['configuration'];
        $this->flashMessage("Article with serial number '$sn' saved");
        $this->redirect('default', null);
    }
}