ISTWCMS-6945: fix logic for getting id in details/summary

uw_fdsu_theme_resp.theme

@@ -736,8 +736,36 @@ function uw_fdsu_theme_resp_preprocess_details(&$variables) {
   }
   else {
 
+    // If there is an element, process it.
+    if (isset($variables['element'])) {
+
+      // Step through each of the indexes and ensure that we
+      // have an actual element, which means it will be an array.
+      foreach ($variables['element'] as $index => $value) {
+
+        // If this is an array, then we have an element to look at.
+        if (is_array($value)) {
+
+          // One more check to ensure that we have an element.
+          if (isset($variables['element'][$index]['#type'])) {
+
+            // Get the id based on where the id is stored, either it
+            // is by itself or within the attributes.
+            if (isset($variables['element'][$index]['#id'])) {
+              $variables['form_field_id'] = $variables['element'][$index]['#id'];
+            }
+            elseif (isset($variables['element'][$index]['#attributes']['id'])) {
+              $variables['form_field_id'] = $variables['element'][$index]['#attributes']['id'];
+            }
+
+            // Break out of the loop to save computational time.
+            break;
+          }
+        }
+      }
+    }
     // If there is a data drupal selector use it for form field id.
-    if (isset($variables['element'][0]['#attributes']['data-drupal-selector'])) {
+    elseif (isset($variables['element'][0]['#attributes']['data-drupal-selector'])) {
       $variables['form_field_id'] = $variables['element'][0]['#attributes']['data-drupal-selector'];
     }
   }