Only allow GET operations in the API

src/Entity/Content.php

@@ -16,7 +16,10 @@ use Doctrine\ORM\Mapping as ORM;
 use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
 
 /**
- * @ApiResource
+ * @ApiResource(
+ *     collectionOperations={"get"},
+ *     itemOperations={"get"}
+ * )
  * @ApiFilter(SearchFilter::class)
  * @ORM\Entity(repositoryClass="Bolt\Repository\ContentRepository")
  * @ORM\Table(name="bolt_content")