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How to Add a Custom field/Field set at Product Edit Page in Magento 2

During the process of developing products in Magento 2, we have received many questions about how to add a custom field/fieldset at Product Edit Page in the Backend of Magento 2. This is a quite important demand when you desire to use extra information on your page which default Magento 2 doesn’t include. If you are also facing that problem, this following article is your solution.

Step 1: Create file etc\adminhtml\di.xml. This file will declare the module’s UI provider to Magento system.

<?xml version="1.0" encoding="UTF-8"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <virtualType name="Magento\Catalog\Ui\DataProvider\Product\Form\Modifier\Pool">
        <arguments>
            <argument name="modifiers" xsi:type="array">
                <item name="customTab" xsi:type="array">
                    <item name="class" xsi:type="string">
            Bss\Customfield\Ui\DataProvider\Product\Form\Modifier\NewField
            </item>
                    <item name="sortOrder" xsi:type="number">70</item>
                </item>
            </argument>
        </arguments>
    </virtualType>
</config>

Step 2: Create Ui\DataProvider\Product\Form\Modifier\NewField.php. This class will create field and fieldset for you.

<?php
namespace Bss\Customfield\Ui\DataProvider\Product\Form\Modifier;
use Magento\Catalog\Model\Locator\LocatorInterface;
use Magento\Catalog\Ui\DataProvider\Product\Form\Modifier\AbstractModifier;
use Magento\Ui\Component\Form\Fieldset;
use Magento\Ui\Component\Form\Field;
use Magento\Ui\Component\Form\Element\Select;
use Magento\Ui\Component\Form\Element\DataType\Text;
class NewField extends AbstractModifier
{
    private $locator;
    public function __construct(
        LocatorInterface $locator
    ) {
        $this->locator = $locator;
    }
    public function modifyData(array $data)
    {
        return $data;
    }
    public function modifyMeta(array $meta)
    {
        return $this->meta;
    }
}

In which:

modifyMeta() – creating field, fieldset.

modifyData() – adding data when product edit page is loaded.

locator – getting product’s information by using $this->locator->getProduct().

For example, we create 1 fieldset and 1 field select yes/no, the content of modifyMeta will be:

    public function modifyMeta(array $meta)
    {
        $meta = array_replace_recursive(
            $meta,
            [
                'custom_fieldset' => [
                    'arguments' => [
                        'data' => [
                            'config' => [
                                'label' => __(Custom Fieldset'),
                                'componentType' => Fieldset::NAME,
                                'dataScope' => 'data.product.custom_fieldset',
                                'collapsible' => true,
                                'sortOrder' => 5,
                            ],
                        ],
                    ],
                    'children' => [
‘custom_field’ => $this->getCustomField()
],
                ]
            ]
        );
        return $meta;
    }

As you see, 1 fieldset in product page edit with label “Custom Fieldset”, the fields in this fieldset will be listed in ‘children’ item as an array. We only need to add 1 field with id custom_field through a function getCustomfield().

    public function getCustomField()
    {
        return [
            'arguments' => [
                'data' => [
                    'config' => [
                        'label' => __('Custom Field'),
                        'componentType' => Field::NAME,
                        'formElement' => Select::NAME,
                        'dataScope' => 'enabled',
                        'dataType' => Text::NAME,
                        'sortOrder' => 10,
                        'options' => [
                            ['value' => '0', 'label' => __('No')],
                            ['value' => '1', 'label' => __('Yes')]
                        ],
                    ],
                ],
            ],
        ];
    }

In addition, we can add the other fields such as text, checkbox, fileupload, so on.

Finally, we get the following result at the product edit page:

Bonus: If you want to create Custom Text Field, please add the following code:

public function getCustomField()

{

     return [

         'arguments' => [

             'data' => [

                 'config' => [

                     'label' => __('Custom Field'),

                     'componentType' => Field::NAME,

                     'formElement' => \Magento\Ui\Component\Form\Element\Input::NAME,

                     'dataScope' => 'enabled',

                     'dataType' => Text::NAME,

                     'sortOrder' => 10,

                 ],

             ],

         ],

     ];

}

Here we get the result:

To assign value to the newly created field, just insert the code as below:

 public function modifyData(array $data)

{

     $data = array_replace_recursive(

         $data,

         [

             $productId => [

                 'product' => [

                     'enabled' => 'your_value'

                 ]

             ]

         ]

     );

     return $data;

}

In a nutshell, with the Custom field/fieldset you can extra product’s information as your desire and I hope that this tutorial will help you understand clearly about custom field/fieldset at Product edit page in Backend of Magento 2.

Updated:

As some readers asked us how to add the custom field inside the advance inventory is to declare Magento 2 Ui Component form, we decide to update the detailed instruction to make it fast and easy:

In the <vendor>\<module>\view\adminhtml\ui_component\product_form.xml please add:

<?xml version="1.0" encoding="UTF-8"?>

<form xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Ui:etc/ui_configuration.xsd">
    <modal name="advanced_inventory_modal">
        <fieldset name="stock_data">
            <argument name="data" xsi:type="array">
                <item name="config" xsi:type="array">
                    <item name="label" xsi:type="string" translate="true">Stock Configuration</item>
                    <item name="dataScope" xsi:type="string"/>
                    <item name="sortOrder" xsi:type="number">100</item>
                    <item name="collapsible" xsi:type="boolean">false</item>
                </item>
            </argument>
            <field name="custom_toggle">
                <argument name="data" xsi:type="array">
                    <item name="config" xsi:type="array">
                        <item name="sortOrder" xsi:type="number">3000</item>
                        <item name="dataType" xsi:type="string">boolean</item>
                        <item name="formElement" xsi:type="string">checkbox</item>
                        <item name="source" xsi:type="string">category</item>
                        <item name="prefer" xsi:type="string">toggle</item>
                        <item name="label" xsi:type="string" translate="true">Custom Label</item>
                        <item name="notice" xsi:type="string">Custom description.</item>
                        <item name="valueMap" xsi:type="array">
                            <item name="true" xsi:type="string">1</item>
                            <item name="false" xsi:type="string">0</item>
                        </item>
                        <item name="validation" xsi:type="array">
                            <item name="required-entry" xsi:type="boolean">false</item>
                        </item>
                        <item name="default" xsi:type="string">0</item>
                    </item>
                </argument>
            </field>
        </fieldset>
    </modal>
</form>

Then, flush the cache and check the result.

magento 2 ui component form results

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