Add complete example module for a (simple) configuration page for a module

demosymfonyformsimple/README.md

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+# Demonstration of how to use Symfony form types for Module configuration pages
+
+## About
+
+In this module, you will learn how to utilize Symfony form types to create configuration pages for your module.
+
+[This module has been created by following a guide from the developer documentation](https://devdocs.prestashop-project.org/8/modules/creation/adding-configuration-page-modern/).
+
+It provides a simple configuration page for a module with a Text Field. This text field value is stored [using the Configuration component](https://devdocs.prestashop-project.org/8/development/components/configuration/). 
+
+## Supported PrestaShop versions
+
+This module has been tested with PrestaShop 8.
+
+## Requirements
+
+Composer
+
+## How to install
+
+Download or clone the module into the modules directory of your PrestaShop installation.
+Rename the directory to make sure that the module directory is named `demosymfonyformsimple`.
+
+`cd` into module's directory and run following commands:
+
+`composer install` - to download dependencies into vendor folder
+
+Install the module from Back Office or via CLI.

demosymfonyformsimple/composer.json

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+{
+    "name": "prestashop/demosymfonyformsimple",
+    "description": "PrestaShop - Settings Form Examples",
+    "license": "AFL-3.0",
+    "authors": [
+      {
+        "name": "PrestaShop Core Team"
+      }
+    ],
+    "autoload": {
+      "psr-4": {
+        "PrestaShop\\Module\\DemoSymfonyFormSimple\\": "src/"
+      }
+    },
+    "require": {
+      "php": ">=7.2.5"
+    },
+    "config": {
+      "preferred-install": "dist",
+      "prepend-autoloader": false
+    },
+    "type": "prestashop-module"
+  }

demosymfonyformsimple/config/routes.yml

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+demo_configuration_form_simple:
+  path: /demosymfonyformsimple/configuration
+  methods: [GET, POST]
+  defaults:
+    _controller: 'PrestaShop\Module\DemoSymfonyFormSimple\Controller\DemoConfigurationController::index'
+    # Needed to work with tab system
+    _legacy_controller: AdminDemoSymfonyFormSimple
+    _legacy_link: AdminDemoSymfonyFormSimple

demosymfonyformsimple/config/services.yml

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+services:
+  _defaults:
+    public: true
+
+  # Demo configuration text form
+  prestashop.module.demosymfonyformsimple.form.type.demo_configuration_text:
+    class: 'PrestaShop\Module\DemoSymfonyFormSimple\Form\DemoConfigurationFormType'
+    parent: 'form.type.translatable.aware'
+    public: true
+    tags:
+      - { name: form.type }
+
+  prestashop.module.demosymfonyformsimple.form.demo_configuration_text_data_configuration:
+    class: PrestaShop\Module\DemoSymfonyFormSimple\Form\DemoConfigurationTextDataConfiguration
+    arguments: ['@prestashop.adapter.legacy.configuration']
+
+  prestashop.module.demosymfonyformsimple.form.demo_configuration_text_form_data_provider:
+    class: 'PrestaShop\Module\DemoSymfonyFormSimple\Form\DemoConfigurationTextFormDataProvider'
+    arguments:
+      - '@prestashop.module.demosymfonyformsimple.form.demo_configuration_text_data_configuration'
+
+  prestashop.module.demosymfonyformsimple.form.demo_configuration_text_form_data_handler:
+    class: 'PrestaShop\PrestaShop\Core\Form\Handler'
+    arguments:
+      - '@form.factory'
+      - '@prestashop.core.hook.dispatcher'
+      - '@prestashop.module.demosymfonyformsimple.form.demo_configuration_text_form_data_provider'
+      - 'PrestaShop\Module\DemoSymfonyFormSimple\Form\DemoConfigurationFormType'
+      - 'DemoConfiguration'

demosymfonyformsimple/demosymfonyformsimple.php

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+<?php
+
+declare(strict_types=1);
+
+use PrestaShop\PrestaShop\Adapter\SymfonyContainer;
+
+class DemoSymfonyFormSimple extends Module
+{
+    public function __construct()
+    {
+        $this->name = 'demosymfonyformsimple';
+        $this->author = 'PrestaShop';
+        $this->version = '1.1.0';
+        $this->need_instance = 0;
+
+        $this->bootstrap = true;
+        parent::__construct();
+
+        $this->displayName = $this->trans('Demo of the Symfony-based configuration form', [], 'Modules.DemoSymfonyFormSimple.Admin');
+        $this->description = $this->trans(
+            'Module demonstrates a simple module\'s configuration page made with Symfony.',
+            [],
+            'Modules.DemoSymfonyFormSimple.Admin'
+        );
+
+        $this->ps_versions_compliancy = ['min' => '8.0.0', 'max' => '8.99.99'];
+    }
+
+    public function getContent()
+    {
+        $route = $this->get('router')->generate('demo_configuration_form');
+        Tools::redirectAdmin($route);
+    }
+}

demosymfonyformsimple/src/Controller/DemoConfigurationController.php

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+<?php
+
+declare(strict_types=1);
+
+namespace PrestaShop\Module\DemoSymfonyFormSimple\Controller;
+
+use PrestaShopBundle\Controller\Admin\FrameworkBundleAdminController;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+class DemoConfigurationController extends FrameworkBundleAdminController
+{
+    public function index(Request $request): Response
+    {
+        $textFormDataHandler = $this->get('prestashop.module.demosymfonyformsimple.form.demo_configuration_text_form_data_handler');
+
+        $textForm = $textFormDataHandler->getForm();
+        $textForm->handleRequest($request);
+
+        if ($textForm->isSubmitted() && $textForm->isValid()) {
+            /** You can return array of errors in form handler and they can be displayed to user with flashErrors */
+            $errors = $textFormDataHandler->save($textForm->getData());
+
+            if (empty($errors)) {
+                $this->addFlash('success', $this->trans('Successful update.', 'Admin.Notifications.Success'));
+
+                return $this->redirectToRoute('demo_configuration_form_simple');
+            }
+
+            $this->flashErrors($errors);
+        }
+
+        return $this->render('@Modules/demosymfonyformsimple/views/templates/admin/form.html.twig', [
+            'demoConfigurationForm' => $textForm->createView(),
+            'formTheme' => '@PrestaShop/Admin/TwigTemplateForm/prestashop_ui_kit.html.twig',
+        ]);
+    }
+}

demosymfonyformsimple/src/Form/DemoConfigurationFormType.php

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+<?php
+
+declare(strict_types=1);
+
+namespace PrestaShop\Module\DemoSymfonyFormSimple\Form;
+
+use PrestaShopBundle\Form\Admin\Type\TranslatorAwareType;
+use Symfony\Component\Form\Extension\Core\Type\TextType;
+use Symfony\Component\Form\FormBuilderInterface;
+
+class DemoConfigurationFormType extends TranslatorAwareType
+{
+    public function buildForm(FormBuilderInterface $builder, array $options): void
+    {
+        $builder
+            ->add('config_text', TextType::class, [
+                'label' => $this->trans('Configuration text', 'Modules.DemoSymfonyFormSimple.Admin'),
+            ]);
+    }
+}

demosymfonyformsimple/src/Form/DemoConfigurationTextDataConfiguration.php

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+<?php
+/**
+ * Copyright since 2007 PrestaShop SA and Contributors
+ * PrestaShop is an International Registered Trademark & Property of PrestaShop SA.
+ *
+ * NOTICE OF LICENSE
+ *
+ * This source file is subject to the Academic Free License 3.0 (AFL-3.0)
+ * that is bundled with this package in the file LICENSE.md.
+ * It is also available through the world-wide-web at this URL:
+ * https://opensource.org/licenses/AFL-3.0
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to [email protected] so we can send you a copy immediately.
+ *
+ * @author    PrestaShop SA <[email protected]>
+ * @copyright Since 2007 PrestaShop SA and Contributors
+ * @license   https://opensource.org/licenses/AFL-3.0 Academic Free License 3.0 (AFL-3.0)
+ */
+
+declare(strict_types=1);
+
+namespace PrestaShop\Module\DemoSymfonyFormSimple\Form;
+
+use PrestaShop\PrestaShop\Core\Configuration\DataConfigurationInterface;
+use PrestaShop\PrestaShop\Core\ConfigurationInterface;
+
+/**
+ * Configuration is used to save data to configuration table and retrieve from it.
+ */
+final class DemoConfigurationTextDataConfiguration implements DataConfigurationInterface
+{
+    public const DEMO_SYMFONY_FORM_SIMPLE_TEXT_TYPE = 'DEMO_SYMFONY_FORM_SIMPLE_TEXT_TYPE';
+    public const CONFIG_MAXLENGTH = 32;
+
+    /**
+     * @var ConfigurationInterface
+     */
+    private $configuration;
+
+    public function __construct(ConfigurationInterface $configuration)
+    {
+        $this->configuration = $configuration;
+    }
+
+    public function getConfiguration(): array
+    {
+        $return = [];
+
+        $return['config_text'] = $this->configuration->get(static::DEMO_SYMFONY_FORM_SIMPLE_TEXT_TYPE);
+
+        return $return;
+    }
+
+    public function updateConfiguration(array $configuration): array
+    {
+        $errors = [];
+
+        if ($this->validateConfiguration($configuration)) {
+            if (strlen($configuration['config_text']) <= static::CONFIG_MAXLENGTH) {
+                $this->configuration->set(static::DEMO_SYMFONY_FORM_SIMPLE_TEXT_TYPE, $configuration['config_text']);
+            } else {
+                $errors[] = 'DEMO_SYMFONY_FORM_SIMPLE_TEXT_TYPE value is too long';
+            }
+        }
+
+        /* Errors are returned here. */
+        return $errors;
+    }
+
+    /**
+     * Ensure the parameters passed are valid.
+     *
+     * @return bool Returns true if no exception are thrown
+     */
+    public function validateConfiguration(array $configuration): bool
+    {
+        return isset($configuration['config_text']);
+    }
+}

demosymfonyformsimple/src/Form/DemoConfigurationTextFormDataProvider.php

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+<?php
+
+declare(strict_types=1);
+
+namespace PrestaShop\Module\DemoSymfonyFormSimple\Form;
+
+use PrestaShop\PrestaShop\Core\Configuration\DataConfigurationInterface;
+use PrestaShop\PrestaShop\Core\Form\FormDataProviderInterface;
+
+/**
+ * Provider is responsible for providing form data, in this case, it is returned from the configuration component.
+ *
+ * Class DemoConfigurationTextFormDataProvider
+ */
+class DemoConfigurationTextFormDataProvider implements FormDataProviderInterface
+{
+    /**
+     * @var DataConfigurationInterface
+     */
+    private $demoConfigurationTextDataConfiguration;
+
+    public function __construct(DataConfigurationInterface $demoConfigurationTextDataConfiguration)
+    {
+        $this->demoConfigurationTextDataConfiguration = $demoConfigurationTextDataConfiguration;
+    }
+
+    public function getData(): array
+    {
+        return $this->demoConfigurationTextDataConfiguration->getConfiguration();
+    }
+
+    public function setData(array $data): array
+    {
+        return $this->demoConfigurationTextDataConfiguration->updateConfiguration($data);
+    }
+}

demosymfonyformsimple/views/templates/admin/form.html.twig

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+{% extends '@PrestaShop/Admin/layout.html.twig' %}
+
+{% block content %}
+  {{ form_start(demoConfigurationForm) }}
+  <div class="card">
+    <h3 class="card-header">
+      <i class="material-icons">settings</i> {{ 'Text form types'|trans({}, 'Modules.DemoSymfonyFormSimple.Admin') }}
+    </h3>
+    <div class="card-body">
+      <div class="form-wrapper">
+        {{ form_widget(demoConfigurationForm) }}
+      </div>
+    </div>
+    <div class="card-footer">
+      <div class="d-flex justify-content-end">
+        <button class="btn btn-primary float-right" id="save-button">
+          {{ 'Save'|trans({}, 'Admin.Actions') }}
+        </button>
+      </div>
+    </div>
+  </div>
+  {{ form_end(demoConfigurationForm) }}
+{% endblock %}