Reverting the 2.0 changes

Author: eduard13

guides/v2.0/ext-best-practices/tutorials/copy-fieldsets.md

@@ -17,7 +17,7 @@ In this tutorial, you will learn to copy custom data from a {% glossarytooltip 7
 
 The following code defines a simple [extension attribute][1] named `demo` for the Cart and Order objects.
 
-**etc/extension_attributes.xml**
+**extension_attributes.xml**
 
 {% highlight xml %}
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="Api/etc/extension_attributes.xsd">
@@ -36,9 +36,9 @@ The following code defines a simple [extension attribute][1] named `demo` for th
 The following code adds the `demo` field to the `sales_convert_quote` fieldset with the `to_order` aspect.
 The code snippet in the next step uses the name of the fieldset and aspect to specify which fields to copy.
 
-**etc/fieldset.xml**
+**fieldset.xml**
 
-```xml
+{% highlight xml %}
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="DataObject/etc/fieldset.xsd">
   <scope id="global">
     <fieldset id="sales_convert_quote">
@@ -48,66 +48,50 @@ The code snippet in the next step uses the name of the fieldset and aspect to sp
     </fieldset>
   </scope>
 </config>
-```
+{% endhighlight %}
 
 ## Step 3: Copy the fieldset
 {:#step-3}
 
-For copying the fieldset, we'll observe the `sales_model_service_quote_submit_before` event by using the following code in our `events.xml` file:
-
-```xml
-<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
-    <event name="sales_model_service_quote_submit_before">
-        <observer name="[vendor]_[module]_sales_model_service_quote_submit_before" instance="Vendor\Module\Observer\SaveOrderBeforeSalesModelQuoteObserver" />
-    </event>
-</config>
-```
-
 The following code snippets highlight the code pieces needed to copy a fieldset using the `\Magento\Framework\DataObject\Copy` class.
 
-```php
-<?php
-namespace Vendor\Module\Observer;
+{% highlight php startinline %}
+...
 
-use Magento\Framework\Event\ObserverInterface;
+/**
+ * @var \Magento\Framework\DataObject\Copy
+ */
+protected $objectCopyService;
 
-class SaveOrderBeforeSalesModelQuoteObserver implements ObserverInterface
-{
 ...
-    /**
-     * @var \Magento\Framework\DataObject\Copy
-     */
-    protected $objectCopyService;
 
+/**
+ * @param \Magento\Framework\DataObject\Copy $objectCopyService
+  ...
+ */
+public function __construct(
+  \Magento\Framework\DataObject\Copy $objectCopyService,
+  ...
+) {
+    $this->objectCopyService = $objectCopyService;
     ...
+  }
+
+...
 
-    /**
-     * @param \Magento\Framework\DataObject\Copy $objectCopyService
-      ...
-     */
-    public function __construct(
-      \Magento\Framework\DataObject\Copy $objectCopyService,
-      ...
-    ) {
-        $this->objectCopyService = $objectCopyService;
-        ...
-    }
-
-    /**
-     * @param \Magento\Framework\Event\Observer $observer
-     */
-    private function execute(\Magento\Framework\Event\Observer $observer)
-    {
-      /* @var Magento\Sales\Model\Order $order */
-      $order = $observer->getEvent()->getData('order');
-      /* @var Magento\Quote\Model\Quote $quote */
-      $quote = $observer->getEvent()->getData('quote');
-      $this->objectCopyService->copyFieldsetToTarget('sales_convert_quote', 'to_order', $quote, $order);
-      ...
-    }
+/**
+ * @param $quote \Magento\Quote\Api\Data\CartInterface
+ * @param $order \Magento\Sales\Api\Data\Order
+ */
+private function copyQuoteToOrder($quote, $order)
+{
+  ...
+  $copy->copyFieldsetToTarget('sales_convert_quote', 'to_order', $quote, $order);
+  ...
 }
 
-```
+...
+{% endhighlight %}
 
 
 In the code, an instance of the `Copy` class is obtained from the constructor using [dependency injection][2].