I need to create a special input type in adminhtml product form. My input will display as a table but save data as a standard text input.

Following the module Edge ProductAttachments I've created the module for magento 1.

Now a I'm trying to convert the module for magento 2, but when create a new product I obtain the error Class inputtable does not exist.

The steps to reproduce the error on an empty magento 2.0.2 installation:

  • Stores -> Product-> Add New Attribute
  • Set Catalog Input Type for Store Owner to Inputtable and Default label to Mytable
  • Click Save Attribute
  • Add the new attribute to Default attribute set
  • Product -> Catalog -> Add Product (simple product)

This is my code:

File: Fun/Tablegrid/etc/module.xml

<?xml version="1.0" encoding="UTF-8"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framework/Module/etc/module.xsd">
    <module name="Fun_Tablegrid" setup_version="1.0.0">

File: Fun/Tablegrid/etc/config.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Store:etc/config.xsd">

File: Fun/Tablegrid/etc/adminhtml/events.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
    <event name="adminhtml_product_attribute_types">
        <observer name="tablegrid" instance="Fun\Tablegrid\Observer\AddTableinputAttributeTypeObserver" />

File: Fun/Tablegrid/Block/Attribute/Renderer.php

namespace Fun\Tablegrid\Block\Attribute;
use \Magento\Framework\Currency;

class Renderer extends \Magento\Framework\Data\Form\Element\Text
    public function getHtml()
        return parent::getHtml();
    //remove the other code to compact question 

File: Fun/Tablegrid/Model/Catalog/ResourceModel/Attribute.php

namespace Fun\Tablegrid\Model\Catalog\ResourceModel;

class Attribute extends \Magento\Catalog\Model\ResourceModel\Attribute
    protected function _beforeSave(\Magento\Framework\Model\AbstractModel $object){
        if ($object->getFrontendInput() === 'tableinput'){
        return parent::_beforeSave($object);

File: Fun/Tablegrid/Observer/AddTableinputAttributeTypeObserver.php

namespace Fun\Tablegrid\Observer;
use Magento\Framework\Event\ObserverInterface;

class AddTableinputAttributeTypeObserver implements ObserverInterface
    public function execute(\Magento\Framework\Event\Observer $observer){
        $response = $observer->getEvent()->getResponse();
        $types = $response->getTypes();
        $types[] = [
            'value' => 'tableinput',
            'label' => __('Tableinput'),
        return $this;
  • I also encountered the same problem, when I created a new one "Catalog Input Type for Store Owner" It has an error "Fatal error: Uncaught TypeError: Argument 2 passed to Magento\Framework\View\Element\UiComponentFactory::argumentsResolver() must be of the type array, null given, called in /var/www/html/magento2.3.0/vendor/magento/framework/View/Element/UiComponentFactory.php on line 223 and defined in /var/www/html/magento2.3.0/vendor/magento/framework/View/Element/UiComponentFactory.php:174 Stack trace: #0 /var/www/html/magento2.3.0/vendor/magento/framework/View/Element/UiComponentFactory.php
    – David
    Jan 24, 2019 at 9:37
  • If you have a new question, please ask it by clicking the Ask Question button. Include a link to this question if it helps provide context. - From Review
    – Jarnail S
    Jan 24, 2019 at 10:01

2 Answers 2


In Fun/Tablegrid/Model/Catalog/ResourceModel/Attribute.php, try:

protected function _beforeSave(\Magento\Framework\Model\AbstractModel $object){
    if ($object->getFrontendInput() === 'tableinput'){
        /* Use setData() and specify full class name below */
        $object->setData('frontend_input_renderer', 'Endertech\Numeric\Block\Adminhtml\Attribute\Numeric');
    return parent::_beforeSave($object);
  • This solution is not working
    – Ramesh
    May 10, 2018 at 6:15

I have followed same process to create the custom input type and getting below error:

Fatal error: Uncaught TypeError: Argument 2 passed to Magento\Framework\View\Element\UiComponentFactory::argumentsResolver() must be of the type array, null given, called in /var/www/html/envio/vendor/magento/framework/View/Element/UiComponentFactory.php on line 222 and defined in /var/www/html/envio/vendor/magento/framework/View/Element/UiComponentFactory.php:174 Stack trace: #0 /var/www/html/envio/vendor/magento/framework/View/Element/UiComponentFactory.php(222): Magento\Framework\View\Element\UiComponentFactory->argumentsResolver('specification', NULL) #1 /var/www/html/envio/vendor/magento/module-ui/Component/Form/Field.php(85): Magento\Framework\View\Element\UiComponentFactory->create('specification', 'groupped_text', Array) #2 /var/www/html/envio/vendor/magento/framework/View/Layout/Generator/UiComponent.php(164): Magento\Ui\Component\Form\Field->prepare() #3 /var/www/html/envio/vendor/magento/framework/View/Layout/Generator/UiComponent.php(161): Magento\Framework\View\Layout\Generator\UiComponent->prepareComponent(O in /var/www/html/envio/vendor/magento/framework/View/Element/UiComponentFactory.php on line 174

Have there anyone fix this issue?? Please help..

  • This section is for answering question not to post question here. you can ask new question and add link of this question to your question post.
    – Jarnail S
    Jun 24, 2019 at 15:56
  • take a look at my answer if you still got this issue: magento.stackexchange.com/a/305227/70258
    – fudu
    Feb 25, 2020 at 7:58

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