Entity_reference_revisions Drupal 8

 

This is related to Paragraphs module in Drupal 8. I have enabled paragraphs module and Entity Reference Revisions module. Then I created a new paragraph type in Admin Structure Paragraph types. After that I added fields to the new paragraph type.

by , Software Architect
DrupalEntity_reference_revisions

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This article is one of Metal Toad's Top 20 Drupal Tips. Enjoy!

Entity_reference_revisions drupal 8 free

Wait, is it '$node->title' or '$node->title->value'? How do I write an EntityQuery again? Yeah, I can never remember, either.

For the developers out there, if you've already read the official Drupal 8 Entity API documentation and you want more examples, here's a handy cheat sheet:

The examples here contain some hard-coded IDs. These are all examples. In your real code, you should already have the node IDs, file IDs, etc. in a variable.

Working with nodes

Load a node by NID:

Get node's NID:

Get node's bundle type:

Get a built-in field value:

or the shorthand, with magic getters:

For more about that file entity target ID, see the 'Working with File Entities' section below

Drupal 8 Entity Api

Get nodes from a query:

Set fields

Delete node(s)

Working with Paragraphs

'Paragraphs' (from the popular contrib module of the same name) are separate entities that are related to the parent nodes via an entity reference revision.

Entity_reference_revisions Drupal 8 Login

Get paragraph entity type:

Working with File entities

Managed files are also separate entities, which are associated with the node using a type of Entity Reference.

Get a file by ID:

Get a file referenced in a node:

Reading some properties from a File entity:

To see what other properties are available, look at the columns in the `file_managed` table.

The file's user data

Entity Reference Revisions Drupal 8

Working with Entity References

Reading from entity reference fields that allow multiple values:

Populate the value of an entity reference field which allows multiple values (this replaces any existing value in the DB)

Append new referenced items to an entity reference field (this preserves existing values)

I hope this saves everyone some time. It certainly is helpful to me every time I write a custom Drupal 8 module.

Happy coding!

Date posted: November 22, 2017

Comments

I prefer $node->bundle() rather than $node->getType() since it will work with all entity types, and getType() can be confused with getEntityType() or getEntityTypeId().