can write and read notes

src/Entity/Note.php

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+<?php
+
+namespace App\Entity;
+
+use App\Repository\NoteRepository;
+use Doctrine\DBAL\Types\Types;
+use Doctrine\ORM\Mapping as ORM;
+
+#[ORM\Entity(repositoryClass: NoteRepository::class)]
+class Note
+{
+    #[ORM\Id]
+    #[ORM\GeneratedValue]
+    #[ORM\Column]
+    private ?int $id = null;
+
+    #[ORM\Column(length: 255)]
+    private ?string $content = null;
+
+    #[ORM\Column(type: Types::DATE_MUTABLE)]
+    private ?\DateTime $published_date = null;
+
+    #[ORM\Column(length: 255)]
+    private ?string $slug = null;
+
+    public function getId(): ?int
+    {
+        return $this->id;
+    }
+
+    public function getContent(): ?string
+    {
+        return $this->content;
+    }
+
+    public function setContent(string $content): static
+    {
+        $this->content = $content;
+
+        return $this;
+    }
+
+    public function getPublishedDate(): ?\DateTime
+    {
+        return $this->published_date;
+    }
+
+    public function setPublishedDate(\DateTime $published_date): static
+    {
+        $this->published_date = $published_date;
+
+        return $this;
+    }
+
+    public function getSlug(): ?string
+    {
+        return $this->slug;
+    }
+
+    public function setSlug(string $slug): static
+    {
+        $this->slug = $slug;
+
+        return $this;
+    }
+}