Magento 2 – how to get data saved in DB from custom checkout field to appear in admin

I have custom fields at checkout being saved into quote and sales_order tables.

InstallSchema.php

public function install(SchemaSetupInterface $setup, ModuleContextInterface $context)
   {
       $installer = $setup;

       $installer->startSetup();

       /* While module install, creates columns in quote_address and sales_order_address table */

       $eavTable1 = $installer->getTable('quote');
       $eavTable2 = $installer->getTable('sales_order');

       $columns = [
           'input_room_shipping_field' => [
               'type' => MagentoFrameworkDBDdlTable::TYPE_TEXT,
               'nullable' => true,
               'comment' => 'Input Room',
           ],

           'input_floor_shipping_field' => [
               'type' => MagentoFrameworkDBDdlTable::TYPE_TEXT,
               'nullable' => true,
               'comment' => 'Input Floor',
           ],

           'select_custom_shipping_field' => [
               'type' => MagentoFrameworkDBDdlTable::TYPE_TEXT,
               'nullable' => true,
               'comment' => 'Select Custom Address',
           ],
       ];

       $connection = $installer->getConnection();
       foreach ($columns as $name => $definition) {
          $connection->addColumn($eavTable1, $name, $definition);
          $connection->addColumn($eavTable2, $name, $definition);
       }
       $installer->endSetup();
   }
}

And I am using extension_attributes.xml

I have an Observer in Observer>SaveCustomFieldsInOrder.php

class SaveCustomFieldsInOrder implements MagentoFrameworkEventObserverInterface
{
   /**
    * @param MagentoFrameworkEventObserver $observer
    * @return $this
    */
   public function execute(MagentoFrameworkEventObserver $observer)
  {

     $order = $observer->getEvent()->getOrder();
     $quote = $observer->getEvent()->getQuote();

      $order->setData(
        "input_room_shipping_field",
        $quote->getInputRoomShippingField()
      );
     $order->setData(
       "input_floor_shipping_field",
       $quote->getInputFloorShippingField()
     );
     $order->setData(
       "select_custom_shipping_field",
       $quote->getSelectCustomShippingField()
     );

     return $this;
  }
}

My plugin – Plugin>checkout>LayoutProcessor.php

class LayoutProcessorPlugin
{
   /**
    * @param LayoutProcessor $subject
    * @param array $jsLayout
    * @return array
    */
   public function afterProcess(
       LayoutProcessor $subject,
       array $jsLayout
   ) {

       $validation['required-entry'] = true;

       $jsLayout['components']['checkout']['children']['steps']['children']['shipping-step']['children']
       ['shippingAddress']['children']['custom-shipping-method-fields']['children']['input_room_shipping_field'] = [
           'component' => "Magento_Ui/js/form/element/abstract",
           'config' => [
               'customScope' => 'customShippingMethodFields',
               'template' => 'ui/form/field',
               'elementTmpl' => "ui/form/element/input",
               'id' => "input_room_shipping_field"
           ],
           'dataScope' => 'customShippingMethodFields.custom_shipping_field[input_room_shipping_field]',
           'label' => "Input Room",
           'provider' => 'checkoutProvider',
           'visible' => true,
           'validation' => $validation,
           'sortOrder' => 2,
           'id' => 'custom_shipping_field[input_room_shipping_field]'
       ];

       $jsLayout['components']['checkout']['children']['steps']['children']['shipping-step']['children']
       ['shippingAddress']['children']['custom-shipping-method-fields']['children']['input_floor_shipping_field'] = [
           'component' => "Magento_Ui/js/form/element/abstract",
           'config' => [
               'customScope' => 'customShippingMethodFields',
               'template' => 'ui/form/field',
               'elementTmpl' => "ui/form/element/input",
               'id' => "input_floor_shipping_field"
           ],
           'dataScope' => 'customShippingMethodFields.custom_shipping_field[input_floor_shipping_field]',
           'label' => "Input Floor",
           'provider' => 'checkoutProvider',
           'visible' => true,
           'validation' => $validation,
           'sortOrder' => 3,
           'id' => 'custom_shipping_field[input_floor_shipping_field]'
       ];

       $jsLayout['components']['checkout']['children']['steps']['children']['shipping-step']['children']
       ['shippingAddress']['children']['custom-shipping-method-fields']['children']['select_custom_shipping_field'] = [
           'component' => "Magento_Ui/js/form/element/select",
           'config' => [
               'customScope' => 'customShippingMethodFields',
               'template' => 'ui/form/field',
               'elementTmpl' => "ui/form/element/select",
               'id' => "select_custom_shipping_field"
           ],
           'dataScope' => 'customShippingMethodFields.custom_shipping_field[select_custom_shipping_field]',
           'label' => "Select option",
           'options' => $this->getSelectOptions(),
           'caption' => 'Please select',
           'provider' => 'checkoutProvider',
           'visible' => true,
           'validation' => $validation,
           'sortOrder' => 4,
           'id' => 'custom_shipping_field[select_custom_shipping_field]'
       ];

       return $jsLayout;
   }

   /**
    * @return array
    */

   protected function getSelectOptions()
   {
       $items[1]["value"] = "123 Any Street, Bldg A, MyTown, PA 19123";
       $items[1]["label"] = "123 Any Street, Bldg A, MyTown, PA 19123";

       $items[2]["value"] = "123 Any Street, Bldg B, MyTown, PA 19123";
       $items[2]["label"] = "123 Any Street, Bldg B, MyTown, PA 19123";

       // $items[3]["value"] = "123 Any Street, Bldg C, MyTown, PA 19123";
       // $items[3]["label"] = "Address #3";
       //
       // $items[4]["value"] = "123 Any Street, Bldg D, MyTown, PA 19123";
       // $items[4]["label"] = "Address #4";
       //
       // $items[5]["value"] = "123 Any Street, Bldg #, MyTown, PA 19123";
       // $items[5]["label"] = "Address #5";

       return $items;
   }
}

And the last plugin – Plugin>Quote

public function __construct(
       QuoteRepository $quoteRepository
   ) {
       $this->quoteRepository = $quoteRepository;
   }

   /**
    * @param MagentoCheckoutModelShippingInformationManagement $subject
    * @param $cartId
    * @param MagentoCheckoutApiDataShippingInformationInterface $addressInformation
    */
   public function beforeSaveAddressInformation(
       MagentoCheckoutModelShippingInformationManagement $subject,
       $cartId,
       MagentoCheckoutApiDataShippingInformationInterface $addressInformation
   ) {
       if(!$extAttributes = $addressInformation->getExtensionAttributes())
           return;

       $quote = $this->quoteRepository->getActive($cartId);

       $quote->setInputRoomShippingField($extAttributes->getInputRoomShippingField());
       $quote->setInputFloorShippingField($extAttributes->getInputFloorShippingField());
       $quote->setDateCustomShippingField($extAttributes->getDateCustomShippingField());
       $quote->setSelectCustomShippingField($extAttributes->getSelectCustomShippingField());
   }
}

And I am trying to display all my data in a block – BlockOrderViewOrderView.php

class OrderView extends MagentoBackendBlockTemplate
{

  public function getInputRoomShippingField ()
   {
      //some code here that gets the inputroomshippingfield and returns it
      $data = "This is Room data";
      return $data;
   }
}

It uses this template view>Adminhtml>templates>shipping_info.php

< ?php echo __('Room Number') ?>
  < ?php echo $block->getInputRoomShippingField(); ?>
  < ?php echo __('Floor Number') ?>
  < ?php echo $block->getInputFloorShippingField(); ?>
  < ?php echo __('Address') ?>
  < ?php echo $block->getSelectCustomShippingField(); ?>

And last in view>Adminhtml>layout>sales_order_view.xml

I can see the text in shipping_info.php but not any of the data. I have tried a bunch of things in OrderView.php with no luck. How do I get the data from the users submission to show in the block?

Thanks!