Symfony 4 and Sonata News Bundle Error during Intallation

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I got the following error during installing SonataNewsBundle.

Unable to register extension "Sonata\FormatterBundle\Extension\ControlFlowExtension" as it is already registered in . (which is being imported from "/home/yoesoff/Documents/projects/oblog/config/routes/sonata_admin.yaml"). Make sure there is a loader supporting the "sonata_admin" type.

Error

And following Error 

The target-entity App\Entity\SonataMediaMedia cannot be found in 'App\Entity\SonataClassificationCollection#media'.

enter image description here

I just followed the official documentation from here.

Anybody can help regarding it?

symfony-4.3 sonata sonata-admin php
1 Answers

There's a step missing in the documentation - looks like we manually need to add an extra package that creates the missing classes:

composer require sonata-project/media-orm-pack

Note that if you are using sonata-project/classification-bundle, you need to fix annotations for App\Entity\SonataMediaMedia::$category like so:

/**
 * ORM\ManyToOne(
 *     targetEntity="App\Entity\SonataClassificationCategory",
 *     cascade={"persist"}
 * )
 * ORM\JoinColumn(name="category_id", referencedColumnName="id", onDelete="SET NULL")
 *
 * @var SonataClassificationCategory
 */
protected $category;

If it helps, as far as I understand we should be skipping the sonata:easy-extends:generate steps when using Symfony 4 / Flex.

The Flex recipes should be creating classes in our App\Entity namespace.

If they do not it will be something along the lines of the above where things need added manually.

user_6355220
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