Magento 2 Create the product attribute programmatically

If you want to create a product attribute programmatically, but not by admin then this blog post is right the solution for you.

Create file app/code/Magemonkey/CustomAttribute/Setup/InstallData.php

<?php
namespace Magemonkey\CustomAttribute\Setup;

use Magento\Eav\Setup\EavSetup;
use Magento\Eav\Setup\EavSetupFactory;
use Magento\Framework\Setup\InstallDataInterface;
use Magento\Framework\Setup\ModuleContextInterface;
use Magento\Framework\Setup\ModuleDataSetupInterface;

class InstallData implements InstallDataInterface
{
	private $eavSetupFactory;

	public function __construct(EavSetupFactory $eavSetupFactory)
	{
		$this->eavSetupFactory = $eavSetupFactory;
	}
	public function install(ModuleDataSetupInterface $setup, ModuleContextInterface $context)
	{
		$eavSetup = $this->eavSetupFactory->create(['setup' => $setup]);
		$eavSetup->addAttribute(
			\Magento\Catalog\Model\Product::ENTITY,
			'custom_attribute',
			[
				'type' => 'text',
				'backend' => '',
				'frontend' => '',
				'label' => 'Custom Atrribute',
				'input' => 'text',
				'class' => '',
				'source' => '',
				'visible' => true,
				'required' => true,
				'global' => \Magento\Eav\Model\Entity\Attribute\ScopedAttributeInterface::SCOPE_GLOBAL,
				'user_defined' => false,
				'default' => '',
				'visible_on_front' => false,
				'used_in_product_listing' => true,
				'unique' => false,
				'apply_to' => '',
				'searchable' => false,
				'filterable' => false,
				'comparable' => false
			]
		);
	}
	
}

<?php

namespace Magemonkey\CustomAttribute\Setup;

use Magento\Eav\Setup\EavSetup;

use Magento\Eav\Setup\EavSetupFactory;

use Magento\Framework\Setup\InstallDataInterface;

use Magento\Framework\Setup\ModuleContextInterface;

use Magento\Framework\Setup\ModuleDataSetupInterface;

class InstallData implements InstallDataInterface

{

private $eavSetupFactory;

public function __construct(EavSetupFactory $eavSetupFactory)

{

$this->eavSetupFactory = $eavSetupFactory;

}

public function install(ModuleDataSetupInterface $setup, ModuleContextInterface $context)

{

$eavSetup = $this->eavSetupFactory->create(['setup' => $setup]);

$eavSetup->addAttribute(

\Magento\Catalog\Model\Product::ENTITY,

'custom_attribute',

[

'type' => 'text',

'backend' => '',

'frontend' => '',

'label' => 'Custom Atrribute',

'input' => 'text',

'class' => '',

'source' => '',

'visible' => true,

'required' => true,

'global' => \Magento\Eav\Model\Entity\Attribute\ScopedAttributeInterface::SCOPE_GLOBAL,

'user_defined' => false,

'default' => '',

'visible_on_front' => false,

'used_in_product_listing' => true,

'unique' => false,

'apply_to' => '',

'searchable' => false,

'filterable' => false,

'comparable' => false

]

);

}

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