Add custom field to Adminhtml form and fill data (Magento 2) - magento2

Question

I need to add Entity_id to Rating Edit Form (Stores -> Rating -> Edit Rating).
I try to achieve this with plugin
Vendor/Module/etc/adminhtml/di.xml:
<type name="Magento\Review\Block\Adminhtml\Rating\Edit\Tab\Form">
<plugin name="add_entity_type_rating_form" type="Vendor\Module\Plugin\Block\Adminhtml\Rating\Edit\Tab\Form" sortOrder="1"/>
</type>
And class Vendor\Module\Plugin\Block\Adminhtml\Rating\Edit\Tab\Form:
<?php
namespace Vendor\Module\Plugin\Block\Adminhtml\Rating\Edit\Tab;
class Form
{
public function aroundGetFormHtml(
\Magento\Review\Block\Adminhtml\Rating\Edit\Tab\Form $subject,
\Closure $proceed
) {
$form = $subject->getForm();
if (is_object($form)) {
$fieldset = $form->getElement('rating_form');
if ($fieldset) {
$fieldset->addField(
'entity_id',
'text',
[
'name' => 'entity_id',
'label' => __('Entity Type'),
'title' => __('Entity Type'),
]
);
}
}
return $proceed();
}
}
On the backend I can see filed 'Entity Type', but it has no value
How should I pass data to this filed (entity_id)?

Answer 1

#Smirnov I just solved a similar issue, what you need to do is set the values to the form again in your plugin function. The result should look like this:
<?php
namespace Vendor\Module\Plugin\Block\Adminhtml\Rating\Edit\Tab;
use Magento\Framework\Registry;
class Form
{
/**
* #var \Magento\Framework\Registry
*/
protected $registry;
/**
* #param \Magento\Framework\Registry $registry
*/
public function __construct(
Registry $registry
) {
$this->registry = $registry;
}
/**
* #param \Magento\Review\Block\Adminhtml\Rating\Edit\Tab\Form $subject
* #param \Closure $proceed
* #return \Closure $proceed
*/
public function aroundGetFormHtml(
\Magento\Review\Block\Adminhtml\Rating\Edit\Tab\Form $subject,
\Closure $proceed
) {
$form = $subject->getForm();
if (is_object($form)) {
$ratingData = $this->registry->registry('rating_data');
$fieldset = $form->getElement('rating_form');
if ($fieldset) {
$fieldset->addField(
'entity_id',
'text',
[
'name' => 'entity_id',
'label' => __('Entity Type'),
'title' => __('Entity Type'),
]
);
}
if ($ratingData) {
$form->setValues($ratingData);
}
}
return $proceed();
}
}
Hope this helps you to solve your requirement. Best.