ImportSource: provide applyModifiers helper method

application/tables/ImportsourceHookTable.php

@@ -68,12 +68,7 @@ class ImportsourceHookTable extends QuickTable
             }
 
             $this->dataCache = $query->fetchAll();
-
+            $this->source->applyModifiers($this->dataCache);
-            if ($this->source->hasRowModifiers()) {
-                foreach ($this->dataCache as & $row) {
-                    $this->source->applyModifiersToRow($row);
-                }
-            }
         }
 
         return $this->dataCache;

library/Director/Import/Import.php

@@ -166,12 +166,7 @@ class Import
             )->fetchData();
         }
 
-        if ($this->source->hasRowModifiers()) {
+        $this->source->applyModifiers($this->data);
-            foreach ($this->data as & $row) {
-                $this->source->applyModifiersToRow($row);
-            }
-        }
-
         return $this->data;
     }
 

library/Director/Objects/ImportSource.php

@@ -77,6 +77,19 @@ class ImportSource extends DbObjectWithSettings
         return null;
     }
 
+    public function applyModifiers(& $data)
+    {
+        $modifiers = $this->getRowModifiers();
+
+        if (! empty($modifiers)) {
+            foreach ($data as &$row) {
+                $this->applyModifiersToRow($row);
+            }
+        }
+
+        return $this;
+    }
+
     public function applyModifiersToRow(& $row)
     {
         $modifiers = $this->getRowModifiers();