ORM: storing to and fetching from the DB.

public/styles/app.css

@@ -4,3 +4,11 @@ img.logo {
   margin: 0 1em 1em;
   width: 100px;
 }
+
+.flash-info {
+  background: #4cae4c;
+}
+
+.flash-error {
+  background: #ce8483;
+}

src/Controller/ProductController.php

@@ -0,0 +1,81 @@
+<?php
+
+namespace App\Controller;
+
+use App\Entity\Product;
+use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
+use Symfony\Bundle\FrameworkBundle\Controller\Controller;
+use Symfony\Component\HttpFoundation\Response;
+
+class ProductController extends Controller
+{
+  /**
+   * @Route(
+   *   name="product",
+   *   path = "/product"
+   * )
+   */
+  public function index() {
+    // EntityManager can also be injected as EntityManagerInterface $em.
+    $em = $this->getDoctrine()->getManager();
+
+    $product = new Product();
+    $product->setName('Keyboard')
+      ->setPrice(19.99)
+      ->setDescription('Ergonomic and stylish!');
+
+    // tell Doctrine you want to (eventually) save the Product (no queries yet)
+    $em->persist($product);
+
+    // actually executes the queries (i.e. the INSERT query)
+    $em->flush();
+
+    return new Response('Saved new product with id ' . $product->getId(),
+      Response::HTTP_CREATED);
+  }
+
+  /**
+   * @\Symfony\Component\Routing\Annotation\Route(
+   *   name = "product_show",
+   *   path = "/product/{id}",
+   * )
+   *
+   * @param $id
+   *
+   * @return \Symfony\Component\HttpFoundation\Response
+   */
+  public function show($id) {
+    $repository = $this->getDoctrine()
+      ->getRepository(Product::class);
+
+    // Find by PK (id).
+    $product = $repository->find($id);
+
+    // Find single entity by properties
+    $product = $repository->findOneBy([
+      'name' => 'Keyboard',
+    ]);
+
+    $productsBy = $repository->findBy([
+      'name' => 'Keyboard',
+    ]);
+    $this->addFlash('info', array_reduce($productsBy, function (string $accu, Product $product) {
+      return $accu . '/' .  $product->getId() . ' ' . $product->getName() . ': ' . $product->getDescription();
+    }, ''));
+
+    $productsAll = $repository->findAll();
+    $this->addFlash('error', array_reduce($productsAll, function (string $accu, Product $product) {
+      return $accu . '/' .  $product->getId() . ' ' . $product->getName() . ': ' . $product->getDescription();
+    }, ''));
+
+    if (!$product) {
+      throw $this->createNotFoundException(
+        "No product found for id $id"
+      );
+    }
+
+    return $this->render('product.html.twig', [
+      'name' => $product->getName(),
+    ]);
+  }
+}

src/Entity/Product.php

@@ -11,9 +11,16 @@ use Doctrine\ORM\Mapping as ORM;
  * names (e.g. GROUP or USER), Or, configure the table name with the
  * ORM\Table(name="groups") annotation above the class or configure the column
  * name with the name="group_name" option.
+ *
+ * Notice: no setId() method. Doctrine sets the ID automatically.
  */
 class Product
 {
+  /**
+   * @ORM\Column(type="text"))
+   */
+  private $description;
+
   /**
    * @ORM\Id
    * @ORM\GeneratedValue
@@ -32,7 +39,60 @@ class Product
   private $price;
 
   /**
-   * @ORM\Column(type="text"))
+   * @return mixed
    */
-  private $description;
+  public function getDescription() {
+    return $this->description;
+  }
+
+  /**
+   * @return mixed
+   */
+  public function getId() {
+    return $this->id;
+  }
+
+  /**
+   * @return mixed
+   */
+  public function getName() {
+    return $this->name;
+  }
+
+  /**
+   * @return mixed
+   */
+  public function getPrice() {
+    return $this->price;
+  }
+
+  /**
+   * @param string $description
+   *
+   * @return \App\Entity\Product
+   */
+  public function setDescription(string $description): self {
+    $this->description = $description;
+    return $this;
+  }
+
+  /**
+   * @param string $name
+   *
+   * @return \App\Entity\Product
+   */
+  public function setName(string $name): self {
+    $this->name = $name;
+    return $this;
+  }
+
+  /**
+   * @param float $price
+   *
+   * @return \App\Entity\Product
+   */
+  public function setPrice(float $price): self {
+    $this->price = $price;
+    return $this;
+  }
 }

templates/base.html.twig

@@ -20,6 +20,11 @@
         </div>
 
         <div id="messages">
+            {% for message in app.flashes('error') %}
+                <div class="flash-error">
+                    {{ message }}
+                </div>
+            {% endfor %}
             {% for message in app.flashes('info') %}
                 <div class="flash-info">
                     {{ message }}

templates/bundles/MakerBundle/demoPage.html.twig

@@ -0,0 +1,48 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="UTF-8" />
+    <title>Welcome!</title>
+    <style>
+        body { background: #F5F5F5; font: 18px/1.5 sans-serif; }
+        h1, h2 { line-height: 1.2; margin: 0 0 .5em; }
+        h1 { font-size: 36px; }
+        h2 { font-size: 21px; margin-bottom: 1em; }
+        p { margin: 0 0 1em 0; }
+        a { color: #0000F0; }
+        a:hover { text-decoration: none; }
+        code { background: #F5F5F5; max-width: 100px; padding: 2px 6px; word-wrap: break-word; }
+        #wrapper { background: #FFF; margin: 1em auto; max-width: 800px; width: 95%; }
+        #container { padding: 2em; }
+        #welcome, #status { margin-bottom: 2em; }
+        #welcome h1 span { display: block; font-size: 75%; }
+        #comment p { margin-bottom: 0; }
+        #icon-status { float: left; height: 64px; margin-right: 1em; margin-top: -4px; width: 64px; }
+        @media (min-width: 768px) {
+            #wrapper { width: 80%; margin: 2em auto; }
+            #status a, #next a { display: block; }
+            @-webkit-keyframes fade-in { 0% { opacity: 0; } 100% { opacity: 1; } }
+            @keyframes fade-in { 0% { opacity: 0; } 100% { opacity: 1; } }
+            .sf-toolbar { opacity: 0; -webkit-animation: fade-in 1s .2s forwards; animation: fade-in 1s .2s forwards;}
+        }
+    </style>
+</head>
+<body>
+<div id="wrapper">
+    <div id="container">
+        <div id="welcome">
+            <h1><span>Un nouveau contrôleur!</span></h1>
+        </div>
+
+        <div id="status">
+            <p>
+                <svg id="icon-status" width="1792" height="1792" viewBox="0 0 1792 1792" xmlns="http://www.w3.org/2000/svg"><path d="M1671 566q0 40-28 68l-724 724-136 136q-28 28-68 28t-68-28l-136-136-362-362q-28-28-28-68t28-68l136-136q28-28 68-28t68 28l294 295 656-657q28-28 68-28t68 28l136 136q28 28 28 68z" fill="#759E1A"/></svg>
+
+                Now, modify it at<br>
+                <code>{{ path }}</code>
+            </p>
+        </div>
+    </div>
+</div>
+</body>
+</html>

templates/product.html.twig

@@ -0,0 +1,7 @@
+{% extends "base.html.twig" %}
+
+{% block title %}Product{% endblock %}
+
+{% block body %}
+    Check out this great product: {{ name }}
+{% endblock %}