[Form] Fixed failing FormDataExtractorTest

Author: webmozart

Extension/DataCollector/FormDataExtractor.php

@@ -123,9 +123,13 @@ public function extractSubmittedData(FormInterface $form)
      */
     public function extractViewVariables(FormView $view)
     {
-        $data = array(
-            'id' => $view->vars['id']
-        );
+        $data = array();
+
+        // Set the ID in case no FormInterface object was collected for this
+        // view
+        if (isset($view->vars['id'])) {
+            $data['id'] = $view->vars['id'];
+        }
 
         foreach ($view->vars as $varName => $value) {
             $data['view_vars'][$varName] = $this->valueExporter->exportValue($value);

Tests/Extension/DataCollector/FormDataExtractorTest.php

@@ -352,13 +352,16 @@ public function testExtractViewVariables()
             'b' => 'foo',
             'a' => 'bar',
             'c' => 'baz',
+            'id' => 'foo_bar',
         );
 
         $this->assertSame(array(
+            'id' => 'foo_bar',
             'view_vars' => array(
                 'a' => "'bar'",
                 'b' => "'foo'",
                 'c' => "'baz'",
+                'id' => "'foo_bar'",
             ),
         ), $this->dataExtractor->extractViewVariables($view));
     }