Set a unique slug to the meetup-event entity

composer.json

@@ -21,6 +21,7 @@
     "presta/sitemap-bundle": "^1.7",
     "sensio/framework-extra-bundle": "^5.3",
     "snc/redis-bundle": "^2.1",
+    "stof/doctrine-extensions-bundle": "^1.5",
     "symfony/cache": "4.4.*",
     "symfony/config": "4.4.*",
     "symfony/console": "4.4.*",

config/bundles.php

@@ -25,4 +25,5 @@
     Nelmio\Alice\Bridge\Symfony\NelmioAliceBundle::class => ['dev' => true, 'test' => true],
     Fidry\AliceDataFixtures\Bridge\Symfony\FidryAliceDataFixturesBundle::class => ['dev' => true, 'test' => true],
     Hautelook\AliceBundle\HautelookAliceBundle::class => ['dev' => true, 'test' => true],
+    Stof\DoctrineExtensionsBundle\StofDoctrineExtensionsBundle::class => ['all' => true],
 ];

config/packages/stof_doctrine_extensions.yaml

@@ -0,0 +1,5 @@
+stof_doctrine_extensions:
+    default_locale: en_US
+    orm:
+        default:
+            sluggable: true

src/Entity/MeetupEvent.php

@@ -6,6 +6,7 @@
 use DateTimeImmutable;
 use DateTimeInterface;
 use Doctrine\ORM\Mapping as ORM;
+use Gedmo\Mapping\Annotation as Gdemo;
 use Symfony\Component\HttpFoundation\File\File;
 use Vich\UploaderBundle\Mapping\Annotation as Vich;
 
@@ -122,6 +123,12 @@ class MeetupEvent
      */
     private $updatedAt;
 
+    /**
+     * @ORM\Column(type="string", length=255, unique=true)
+     * @Gdemo\Slug(fields={"title"})
+     */
+    private $slug;
+
     public function getId(): ?int
     {
         return $this->id;
@@ -388,4 +395,16 @@ public function getUpdatedAt(): ?DateTimeInterface
     {
         return $this->updatedAt;
     }
+
+    public function getSlug(): ?string
+    {
+        return $this->slug;
+    }
+
+    public function setSlug(string $slug): self
+    {
+        $this->slug = $slug;
+
+        return $this;
+    }
 }

src/Migrations/Version20201127130925.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20201127130925 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Add the slug field without restrictions to have a safe migration';
+    }
+
+    public function up(Schema $schema): void
+    {
+        // this up() migration is auto-generated, please modify it to your needs
+        $this->abortIf('mysql' !== $this->connection->getDatabasePlatform()->getName(), 'Migration can only be executed safely on \'mysql\'.');
+
+        $this->addSql('ALTER TABLE meetup_event ADD slug VARCHAR(255) NOT NULL, CHANGE created_at created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP');
+    }
+
+    public function down(Schema $schema): void
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->abortIf('mysql' !== $this->connection->getDatabasePlatform()->getName(), 'Migration can only be executed safely on \'mysql\'.');
+
+        $this->addSql('ALTER TABLE meetup_event DROP slug, CHANGE created_at created_at DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL');
+    }
+}