Formulario + CRUD Admin

Creamos formulario en el panel Admin de Magento , para registrar contactos nuevos

1.- Creaos Controlador NewAction
	app/code/Pfay/Contacts/Controller/Adminhtml/Test/NewAction.php

2.- Creamos el Layout
	app/code/Pfay/Contacts/view/adminhtml/layout/contacts_test_newaction.xml
	indicando que nuestro diseño se encuentra en contacts_test_edit
3.- cremos nuestro archivo test_edit
	app/code/Pfay/Contacts/view/adminhtml/layout/contacts_test_edit.xml
	Aquí indicamos que cargue un uiComponent llamado pfay_contacts_form

4.- creamos nuestro componente que contendrá nuestro FORMULARIO

5.- creamos el archivo que sera la fuente de nuestros datos
	app/code/Pfay/Contacts/Model/Contact/DataProvider.php
6.- Creamos nuestra clase para nuestros botones
	app/code/Pfay/Contacts/Block/Adminhtml/Contact/Edit/GenericButton.php
	esta clase permite que existan otros botones. Esta es la base que extiende los otros botones.
7.- Creamos nuestro bloque para botón que guarda formulario
	app/code/Pfay/Contacts/Block/Adminhtml/Contact/Edit/BackButton.php
8.- Creamos bloque para botón borrar
	app/code/Pfay/Contacts/Block/Adminhtml/Contact/Edit/DeleteButton.php
9.- Creamos botón resetear formulario
	app/code/Pfay/Contacts/Block/Adminhtml/Contact/Edit/ResetButton.php
10.- Creamos bloque para botón guardar formulario
	app/code/Pfay/Contacts/Block/Adminhtml/Contact/Edit/SaveButton.php
11.- Creamos nuestra accion eliminar
	app/code/Pfay/Contacts/Controller/Adminhtml/Test/Delete.php

11.- actualízamos , compilamos y asignamos permisos
	php bin/magento setup:upgrade
	php bin/magento setup:di:compile
	chmod -R 777 var/ pub/

code/Pfay/Contacts/Block/Adminhtml/Contact/Edit/BackButton.php

@@ -0,0 +1,33 @@
+<?php
+namespace Pfay\Contacts\Block\Adminhtml\Contact\Edit;
+
+use Magento\Framework\View\Element\UiComponent\Control\ButtonProviderInterface;
+
+/**
+ * Class BackButton
+ */
+class BackButton extends GenericButton implements ButtonProviderInterface
+{
+    /**
+     * @return array
+     */
+    public function getButtonData()
+    {
+        return [
+            'label' => __('Back'),
+            'on_click' => sprintf("location.href = '%s';", $this->getBackUrl()),
+            'class' => 'back',
+            'sort_order' => 10
+        ];
+    }
+
+    /**
+     * Get URL for back (reset) button
+     *
+     * @return string
+     */
+    public function getBackUrl()
+    {
+        return $this->getUrl('*/*/');
+    }
+}

code/Pfay/Contacts/Block/Adminhtml/Contact/Edit/DeleteButton.php

@@ -0,0 +1,37 @@
+<?php
+namespace Pfay\Contacts\Block\Adminhtml\Contact\Edit;
+
+use Magento\Framework\View\Element\UiComponent\Control\ButtonProviderInterface;
+
+/**
+ * Class DeleteButton
+ */
+class DeleteButton extends GenericButton implements ButtonProviderInterface
+{
+    /**
+     * @return array
+     */
+    public function getButtonData()
+    {
+        $data = [];
+        if ($this->getId()) {
+            $data = [
+                'label' => __('Delete Contact'),
+                'class' => 'delete',
+                'on_click' => 'deleteConfirm(\''
+                    . __('Are you sure you want to delete this contact ?')
+                    . '\', \'' . $this->getDeleteUrl() . '\')',
+                'sort_order' => 20,
+            ];
+        }
+        return $data;
+    }
+
+    /**
+     * @return string
+     */
+    public function getDeleteUrl()
+    {
+        return $this->getUrl('*/*/delete', ['pfay_contacts_id' => $this->getId()]);
+    }
+}

code/Pfay/Contacts/Block/Adminhtml/Contact/Edit/GenericButton.php

@@ -0,0 +1,61 @@
+<?php
+namespace Pfay\Contacts\Block\Adminhtml\Contact\Edit;
+
+use Magento\Search\Controller\RegistryConstants;
+
+/**
+ * Class GenericButton
+ */
+class GenericButton
+{
+    /**
+     * Url Builder
+     *
+     * @var \Magento\Framework\UrlInterface
+     */
+    protected $urlBuilder;
+
+    /**
+     * Registry
+     *
+     * @var \Magento\Framework\Registry
+     */
+    protected $registry;
+
+    /**
+     * Constructor
+     *
+     * @param \Magento\Backend\Block\Widget\Context $context
+     * @param \Magento\Framework\Registry $registry
+     */
+    public function __construct(
+        \Magento\Backend\Block\Widget\Context $context,
+        \Magento\Framework\Registry $registry
+    ) {
+        $this->urlBuilder = $context->getUrlBuilder();
+        $this->registry = $registry;
+    }
+
+    /**
+     * Return the synonyms group Id.
+     *
+     * @return int|null
+     */
+    public function getId()
+    {
+        $contact = $this->registry->registry('contact');
+        return $contact ? $contact->getId() : null;
+    }
+
+    /**
+     * Generate url by route and parameters
+     *
+     * @param   string $route
+     * @param   array $params
+     * @return  string
+     */
+    public function getUrl($route = '', $params = [])
+    {
+        return $this->urlBuilder->getUrl($route, $params);
+    }
+}

code/Pfay/Contacts/Block/Adminhtml/Contact/Edit/ResetButton.php

@@ -0,0 +1,23 @@
+<?php
+namespace Pfay\Contacts\Block\Adminhtml\Contact\Edit;
+
+use Magento\Framework\View\Element\UiComponent\Control\ButtonProviderInterface;
+
+/**
+ * Class ResetButton
+ */
+class ResetButton implements ButtonProviderInterface
+{
+    /**
+     * @return array
+     */
+    public function getButtonData()
+    {
+        return [
+            'label' => __('Reset'),
+            'class' => 'reset',
+            'on_click' => 'location.reload();',
+            'sort_order' => 30
+        ];
+    }
+}

code/Pfay/Contacts/Block/Adminhtml/Contact/Edit/SaveButton.php

@@ -0,0 +1,26 @@
+<?php
+namespace Pfay\Contacts\Block\Adminhtml\Contact\Edit;
+
+use Magento\Framework\View\Element\UiComponent\Control\ButtonProviderInterface;
+
+/**
+ * Class SaveButton
+ */
+class SaveButton extends GenericButton implements ButtonProviderInterface
+{
+    /**
+     * @return array
+     */
+    public function getButtonData()
+    {
+        return [
+            'label' => __('Save Contact'),
+            'class' => 'save primary',
+            'data_attribute' => [
+                'mage-init' => ['button' => ['event' => 'save']],
+                'form-role' => 'save',
+            ],
+            'sort_order' => 90,
+        ];
+    }
+}

code/Pfay/Contacts/Controller/Adminhtml/Test/Delete.php

@@ -0,0 +1,29 @@
+<?php
+namespace Pfay\Contacts\Controller\Adminhtml\Test;
+use Pfay\Contacts\Model\Contact as Contact;
+use Magento\Backend\App\Action;
+
+class Delete extends \Magento\Backend\App\Action
+{
+    public function execute()
+    {
+        $id = $this->getRequest()->getParam('id');
+
+        if (!($contact = $this->_objectManager->create(Contact::class)->load($id))) {
+            $this->messageManager->addError(__('Unable to proceed. Please, try again.'));
+            $resultRedirect = $this->resultRedirectFactory->create();
+            return $resultRedirect->setPath('*/*/index', array('_current' => true));
+        }
+        try{
+            $contact->delete();
+            $this->messageManager->addSuccess(__('Your contact has been deleted !'));
+        } catch (Exception $e) {
+            $this->messageManager->addError(__('Error while trying to delete contact: '));
+            $resultRedirect = $this->resultRedirectFactory->create();
+            return $resultRedirect->setPath('*/*/index', array('_current' => true));
+        }
+
+        $resultRedirect = $this->resultRedirectFactory->create();
+        return $resultRedirect->setPath('*/*/index', array('_current' => true));
+    }
+}

code/Pfay/Contacts/Controller/Adminhtml/Test/NewAction.php

@@ -0,0 +1,27 @@
+<?php
+namespace Pfay\Contacts\Controller\Adminhtml\Test;
+use Magento\Backend\App\Action;
+use Pfay\Contacts\Model\Contact as Contact;
+
+class NewAction extends \Magento\Backend\App\Action
+{
+    /**
+     * Edit A Contact Page
+     *
+     * @return \Magento\Backend\Model\View\Result\Page|\Magento\Backend\Model\View\Result\Redirect
+     * @SuppressWarnings(PHPMD.NPathComplexity)
+     */
+    public function execute()
+    {
+        $this->_view->loadLayout();
+        $this->_view->renderLayout();
+
+        $contactDatas = $this->getRequest()->getParam('contact');
+        if(is_array($contactDatas)) {
+            $contact = $this->_objectManager->create(Contact::class);
+            $contact->setData($contactDatas)->save();
+            $resultRedirect = $this->resultRedirectFactory->create();
+            return $resultRedirect->setPath('*/*/index');
+        }
+    }
+}

code/Pfay/Contacts/Model/Contact/DataProvider.php

@@ -0,0 +1,44 @@
+<?php
+namespace Pfay\Contacts\Model\Contact;
+use Pfay\Contacts\Model\ResourceModel\Contact\CollectionFactory;
+class DataProvider extends \Magento\Ui\DataProvider\AbstractDataProvider
+{
+    /**
+     * @param string $name
+     * @param string $primaryFieldName
+     * @param string $requestFieldName
+     * @param CollectionFactory $contactCollectionFactory
+     * @param array $meta
+     * @param array $data
+     */
+    public function __construct(
+        $name,
+        $primaryFieldName,
+        $requestFieldName,
+        CollectionFactory $contactCollectionFactory,
+        array $meta = [],
+        array $data = []
+    ) {
+        $this->collection = $contactCollectionFactory->create();
+        parent::__construct($name, $primaryFieldName, $requestFieldName, $meta, $data);
+    }
+
+    public function getData()
+    {
+        if (isset($this->loadedData)) {
+            return $this->loadedData;
+        }
+
+        $items = $this->collection->getItems();
+        $this->loadedData = array();
+        /** @var Customer $customer */
+        foreach ($items as $contact) {
+            // notre fieldset s'apelle "contact" d'ou ce tableau pour que magento puisse retrouver ses datas :
+            $this->loadedData[$contact->getId()]['contact'] = $contact->getData();
+        }
+
+
+        return $this->loadedData;
+
+    }
+}

code/Pfay/Contacts/view/adminhtml/layout/contacts_test_edit.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0"?>
+<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
+    <update handle="styles"/>
+    <update handle="editor"/>
+    <body>
+        <referenceContainer name="content">
+            <uiComponent name="pfay_contacts_form"/>
+        </referenceContainer>
+    </body>
+</page>

code/Pfay/Contacts/view/adminhtml/layout/contacts_test_newaction.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0"?>
+<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
+    <update handle="contacts_test_edit"/>
+    <body/>
+</page>

code/Pfay/Contacts/view/adminhtml/ui_component/contacts_test_listing.xml

@@ -16,7 +16,7 @@
                 <item name="name" xsi:type="string">add</item>
                 <item name="label" xsi:type="string" translate="true">Add a new contact</item>
                 <item name="class" xsi:type="string">primary</item>
-                <item name="url" xsi:type="string">*/*/add</item>
+                <item name="url" xsi:type="string">*/*/newAction</item>
             </item>
         </item>