Form field types

By default, the field type of form field is text, resulting in an HTML <input> element. You can override this type by setting a new field_type in the system.

<?xml version="1.0"?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:noNamespaceSchemaLocation="urn:magento:module:View/Layout:etc/page_configuration.xsd">
    <update handle="loki_admin_components_form"/>
    
    <body>
        <referenceContainer name="content">
            <block
                name="yireo-training.example-admin.form"
                template="Loki_AdminComponents::form.phtml">
                <arguments>
                    <argument name="fields" xsi:type="array">
                        <item name="description" xsi:type="array">
                            <item name="field_type" xsi:type="string">textarea</item>
                        </item>
                    </argument>
                </arguments>
            </block>
        </referenceContainer>
    </body>
</page>

Existing field types

By default, the following field types are present:

  • view (to only display the text value)
  • text
  • textarea
  • date
  • datetime
  • number
  • select
  • switch
  • from_to
  • product_id

Adding a custom field type

New field types can be created by adding a DI type (etc/di.xml):

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <type name="Loki\AdminComponents\Form\Field\FieldTypeProvider">
        <arguments>
            <argument name="fieldTypes" xsi:type="array">
                <item name="foobar" xsi:type="object">YireoTraining\LokiAdmin\Form\Field\FieldType\Foobar</item>
            </argument>
        </arguments>
    </type>
</config>

The new class needs to implement the interface Loki\AdminComponents\Form\Field\FieldTypeInterface:

<?php declare(strict_types=1);

namespace YireoTraining\ExampleAdmin\Form\Field\FieldType;

use Loki\AdminComponents\Form\Field\FieldTypeInterface;

class Foobar implements FieldTypeInterface
{
    public function getTemplate(): string
    {
        return 'YireoTraining_ExampleAdmin::form/field_type/foobar.phtml';
    }
}
Last modified: May 13, 2026