Add custom text field attribute WooCommerce

custom-text-field-produt-woocommerce.php

<?php

// show custom field in product page
function dcms_display_field() {

	// Optional validation for specif category
	// global $product;
	// $categories = $product->get_category_ids();
	// if ( ! in_array(34, $categories )) return;

	echo '<div class="custom-field-wrapper">
			<label for="title-field">Ingresa algún texto:</label>
			<input type="text" id="dcms-custom-field" name="dcms-custom-field" value="">
		 </div><br /><hr />';
}
add_action( 'woocommerce_before_add_to_cart_button', 'dcms_display_field', 10, 0 );

// Validate custom field
function dcms_field_validation( $passed, $product_id, $quantity  ) {
	if( isset( $_REQUEST['dcms-custom-field'] ) && empty($_REQUEST['dcms-custom-field'])) {
		$passed = false;
		wc_add_notice( 'Ingresa algún texto personalizado', 'error' );
	}
	return $passed;
}
add_filter( 'woocommerce_add_to_cart_validation', 'dcms_field_validation', 10, 3 );


// Add field data to the cart
function dcms_add_field_to_cart( $cart_item_data, $product_id, $variation_id ) {
	if( ! empty( $_REQUEST['dcms-custom-field'] ) ) {
		$cart_item_data['dcms-custom-field'] = sanitize_text_field($_REQUEST['dcms-custom-field']);
	}
	return $cart_item_data;
}
add_filter( 'woocommerce_add_cart_item_data', 'dcms_add_field_to_cart', 10, 3 );


// Display field in the cart
function dcms_display_field_to_cart( $item_name, $cart_item, $cart_item_key ) {
	if ( isset($cart_item['dcms-custom-field']) ){
		$item_name .= sprintf("<p>Texto: %s </p>", $cart_item['dcms-custom-field']);
	}
	return $item_name;
}
add_filter( 'woocommerce_cart_item_name', 'dcms_display_field_to_cart', 10, 3 );


// Add custom field to order
function dcms_add_field_to_order( $item, $cart_item_key, $values, $order ) {
	if ( isset( $values['dcms-custom-field'] )){
		$item->add_meta_data( 'Texto', $values['dcms-custom-field'], true );
	}
}
add_action( 'woocommerce_checkout_create_order_line_item', 'dcms_add_field_to_order', 10, 4 );