Drupal 8 entities & felds

Drupal 8 Entities
Content vs Configuration
Andy Postnikov, 2013

Drupal 7 entities
● Node
● Comment
● User
● Term
● Vocabulary
●
● Contrib … Commerce, Message, ECK, ...
●
● Entity API, Rules, DS

Drupal 8 entities
Ctools + Entity API + DS + Rules
EntityInterface
ContentEntityInterface
ConfigEntityInterface
Entity

D8 entity - taxonomy_vocabulary
core/profiles/standard/config/taxonomy.vocabulary.tags.yml
● vid: tags
● name: Tags
● description: 'Use tags to group articles on similar topics into categories.'
● hierarchy: '0'
● weight: '0'
● status: '1'
● langcode: en

Role = user_role config
/core/profiles/standard
/config/user.role.administrator.yml
● id: administrator
● label: Administrator
● weight: 2
● langcode: en

Node & NodeType
type: article
name: Article
base: node_content
module: node
disabled: '0'
locked: '0'
custom: '1'
status: '1'
langcode: und
description: 'Use
<em>articles</em> for
time-sensitive content like
news, press releases or
blog posts.'
help: ''
has_title: '1'
title_label: Title
settings:
node:
preview: '1'
options:
status: status
promote: promote
sticky: '0'
revision: '0'
submitted: '1'
Node = nid, uuid, vid, type, langcode [tnid, translate]
{node_field_data} + {node_field_revision} = title, uid...
NodeType http://dgo.to/111715 - conversion

Content vs Config
● Contact
● Vocabulary
● View
● Custom block
● Role
● Menu
Block config vs Block content → Content

ConfigEntityInterface
getOriginalID() + setStatus()

Language Entity or Class
● Each entity contains
– UUID - Universally unique identifier for this entity. (128)
– LANGCODE - varchar(12)
● Modules:
– Locale
– language
– translation @deprecated
– translation_entity

Entity = Plugin (wtf)
DrupaluserPluginCoreEntityUser
/**
* Defines the user entity class.
*
* @EntityType(
* id = "user",
* label = @Translation("User"),
* module = "user",
* controllers = {
* "storage" =
"DrupaluserUserStorageController",
* "access" =
"DrupaluserUserAccessController",
* "render" =
"DrupalCoreEntityEntityRenderController",
* "form" = {
* "profile" =
"DrupaluserProfileFormController",
* "register" =
"DrupaluserRegisterFormController"
* },
* "translation" =
"DrupaluserProfileTranslationController"
* },
* default_operation = "profile",
* base_table = "users",
* uri_callback = "user_uri",
* route_base_path =
"admin/config/people/accounts",
* label_callback = "user_label",
* fieldable = TRUE,
* translatable = TRUE,
* entity_keys = {
* "id" = "uid",
* "uuid" = "uuid"
* }
* )
*/
class User extends EntityNG implements
UserInterface {
…
interface UserInterface extends
EntityInterface {}
class Entity implements
IteratorAggregate, EntityInterface {}
class EntityNG extends Entity {}

Entity API
● Definition:
– Annotation @EntityType
– hook_entity_info(&$entity_info) +
hook_entity_info_alter(&$entity_info)
– hook_entity_bundle_info() +
hook_entity_bundle_info_alter(&$bundles)
– Display entity via RenderController
● ViewMode
● EntityDisplay
● EntityFormDisplay

Entity API
● Controllers:
– EntityStorageControllerInterface
– EntityAccessControllerInterface
– EntityRenderControllerInterface
– EntityFormControllerInterface — many
– EntityTranslationControllerInterface

Entity NG
● Why Drupal 8 slow (x4) => entityBCdecorator
<?php
/**
* @file
* Contains DrupalCoreEntityEntity.
*/
/**
* Implements DrupalCoreEntityEntityInterface::getBCEntity().
*/
public function getBCEntity() {
return $this;
}
/**
* Implements DrupalCoreEntityEntityInterface::getNGEntity().
*/
public function getNGEntity() {
return $this;
}

Entity NG - BC
● Magic methods vs native properties
<?php
/**
* @file
* Contains DrupalCoreEntityEntityNG.
*/
/**
* Overrides Entity::getBCEntity().
*/
public function getBCEntity() {
if (!isset($this->bcEntity)) {
// Initialize field definitions so that we can pass them by reference.
$this->getPropertyDefinitions();
$this->bcEntity = new EntityBCDecorator($this, $this->fieldDefinitions);
}
return $this->bcEntity;
}

Fields NG
● Bundles are separated from entity definition
● Field and Field instance are config objects
● Todo:
– Replace most field-hooks with TypedData
– Review mega patches in sandboxes
– Allow use widgets and formatters for any data
object (none-configurable field)

Fields for menu links
● * @EntityType(
● * id = "menu",
● * label = @Translation("Menu"),
● * module = "system",
● * controllers = {
● * "storage" = "DrupalCoreConfigEntityConfigStorageController"
● * },
● * config_prefix = "menu.menu",
● * entity_keys = {
● * "id" = "id",
● * "label" = "label",
● * "uuid" = "uuid"
● * }

Validation
● #2002152 by fago, amateescu: Implement
entity validation based on symfony validator.
●
● Make formatters and widgets work on
nonconfigurable fields
https://drupal.org/node/1950632

Todo
● [meta] Unified Entity Field API
– https://drupal.org/node/1346214
● Move entity-type specific storage logic into
entity classes
● [META] Unify entity fields and field API

Questions
● http://entity.worldempire.ch
● http://realize.be/field-api/
● http://buytaert.net/want-more-features-in-drupal-8-h

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