I’m trying to setup a custom module which clones the content from NODETYPE_A to NODETYPE_B. For most part, both nodetypes use the same fields, but NODETYPE_B has a few additional ones. For example:

NODETYPE_A:

• Title (title)
• Body (body)
• Date (field_date_agenda)

NODETYPE_B:

• Title (title)
• Body (body)
• Date (field_date_agenda)
• Number of items (field_int_how_many)
• Reference to NodeTypeA (field_noderef_nta)

Now, with the build in functionality “$cloned_node = $node->createDuplicate()” I am able to clone all fields from NODETYPE_A to NODETYPE_B, as well as the ability to change the nodetype from NODETYPE_A to NODETYPE_B.

Since NODETYPE_A doesn’t have the extra fields (field_int_how_many and, field_noderef_nta) attached to it to begin with, createDuplicate() obviously won’t copy them to NODETYPE_B.

Now, what I would like to do, is programmatically adding the other fields (which I will be populating with some custom values) to $cloned_node. When these actions are completed, $cloned_node->save(); will be called to finalize the cloning process.

Simply adding the value via $cloned_node->set("field_int_how_many", $value) doesn't seem to to the trick; an php-error gets triggered, with the following watchdog entry:

InvalidArgumentException: Field field_int_how_many is unknown. in Drupal\Core\Entity\ContentEntityBase->getTranslatedField() (rule 587 of /home/username/domains/domainname.com/public_html/devsite/web/core/lib/Drupal/Core/Entity/ContentEntityBase.php).

Does anyone has an idea how to add those “extra/custom” fields to the cloned object?

I am trying to setup a custom module which copies values from a node whose content type is A to a node whose content type is B. For the most part, the content types have the same fields, but B has a few additional fields.

A

• Title (title)
• Body (body)
• Date (field_date_agenda)

B

• Title (title)
• Body (body)
• Date (field_date_agenda)
• Number of items (field_int_how_many)
• Reference to A (field_noderef_nta)

With $cloned_node = $node->createDuplicate() I am able to copy all the fields from A, as well as being able to change the content type to B.
Since A doesn't have the extra fields attached to it, createDuplicate() won't copy them.

Now, what I would like to do is to programmatically add the other fields (which I will populate with some custom values) to $cloned_node. When these actions are completed, $cloned_node->save() will be used to finalize the cloning process.

Simply adding the value via $cloned_node->set("field_int_how_many", $value) doesn't seem to do the trick: A PHP error is thrown.

InvalidArgumentException: Field field_int_how_many is unknown. in Drupal\Core\Entity\ContentEntityBase->getTranslatedField() (line 587 of /home/username/domains/domainname.com/public_html/devsite/web/core/lib/Drupal/Core/Entity/ContentEntityBase.php).

Does anyone have an idea how to add those extra fields to the cloned node?