[5.3] Fields batch copy category (joomla#44943)

Author: chmst

administrator/components/com_fields/src/Model/FieldModel.php

@@ -1168,6 +1168,16 @@ protected function batchCopy($value, $pks, $contexts)
 
         foreach ($pks as $pk) {
             if ($user->authorise('core.create', $component . '.fieldgroup.' . $value)) {
+                // Find all assigned categories to this field
+                $db    = $this->getDatabase();
+                $query = $db->getQuery(true);
+
+                $query->select($db->quoteName('category_id'))
+                    ->from($db->quoteName('#__fields_categories'))
+                    ->where($db->quoteName('field_id') . ' = ' . (int) $pk);
+
+                $assignedCatIds = $db->setQuery($query)->loadColumn();
+
                 $table->reset();
                 $table->load($pk);
 
@@ -1194,6 +1204,17 @@ protected function batchCopy($value, $pks, $contexts)
                 // Get the new item ID
                 $newId = $table->id;
 
+                // Inset the assigned categories
+                if (!empty($assignedCatIds)) {
+                    $tuple           = new \stdClass();
+                    $tuple->field_id = $newId;
+
+                    foreach ($assignedCatIds as $catId) {
+                        $tuple->category_id = $catId;
+                        $db->insertObject('#__fields_categories', $tuple);
+                    }
+                }
+
                 // Add the new ID to the array
                 $newIds[$pk] = $newId;
             } else {