Create your entity

command make:entity

Let’s say you want to create an Article Entity.

Use make:entity command to create your entity Article

./bin/console make:entity Article

The command will ask you some questions - answer them to add your properties like title and body.

New property name (press <return> to stop adding fields):
 > title

 Field type (enter ? to see all types) [string]:
 > string

 Field length [255]:
 > 255

 Can this field be null in the database (nullable) (yes/no) [no]:
 > no



 Add another property? Enter the property name (or press <return> to stop adding fields):
 > body   

 Field type (enter ? to see all types) [string]:
 > text

 Can this field be null in the database (nullable) (yes/no) [no]:
 > yes

To add a field relation between Article and the Media class from the OperaMediaBundle:

 Add another property? Enter the property name (or press <return> to stop adding fields):
 > image

 Field type (enter ? to see all types) [string]:
 > relation

 What class should this entity be related to?:
 > Opera\MediaBundle\Entity\Media

Relation type? [ManyToOne, OneToMany, ManyToMany, OneToOne]:
 > ManyToOne

 Is the Article.image property allowed to be null (nullable)? (yes/no) [yes]:
 > yes

This will create a Entity/Article.php and Repository/ArticleRepository.php

Update the database schema

./bin/console database:schema:update --force

__toString magic function

add to your Article class a __toString() function.

class Article
{
 // [...] all generated code by make:entity

    public function __toString(): string
    {
        return $this->getTitle();
    }
}

Add your entity to easy admin

# in the File config/packages/easy_admin.yaml
# more info for this configuration on https://symfony.com/doc/master/bundles/EasyAdminBundle/book/edit-new-configuration.html
easy_admin:

    design:
        menu:
            # [...]
            - { label: 'Content', children: ['Article'] } # Add an 'Article' link in the admin menu

    entities:
        Article:
            class: App\Entity\Article # Add 'Article' class to easy admin entities
            form:
                fields: # customise the shown fields
                    - title
                    - slug
                    - { property: body, type: FOS\CKEditorBundle\Form\Type\CKEditorType }
                    - tags
                    - intro
                    - { property: image, type: Opera\MediaBundle\Form\MediaEntityType }

What to do with your entity

Listable

If you want to have a block of “top 10 articles”, “last 5 articles” or “Articles about XYZ” in your website you can use the ListableContent Block: you have to make your entity listable following the OperaListBlockBundle documentation.

It will consist of having your newly created ArticleRepository to implements an Interface.

Create your Custom Block

If you want to create a custom block for your new entity you can follow the Block System documentation

Opera Project

Entities