Fix drag/drop + sort

app/Repositories/PiggyBank/ModifiesPiggyBanks.php

@@ -63,6 +63,17 @@ trait ModifiesPiggyBanks
         return true;
     }
 
+    /**
+     * @inheritDoc
+     */
+    public function removeObjectGroup(PiggyBank $piggyBank): PiggyBank
+    {
+        $piggyBank->objectGroups()->sync([]);
+
+        return $piggyBank;
+    }
+
+
     /**
      * @param PiggyBankRepetition $repetition
      * @param string              $amount
@@ -250,6 +261,22 @@ trait ModifiesPiggyBanks
         return true;
     }
 
+
+    /**
+     * @inheritDoc
+     */
+    public function setObjectGroup(PiggyBank $piggyBank, string $objectGroupTitle): PiggyBank
+    {
+        $objectGroup = $this->findOrCreateObjectGroup($objectGroupTitle);
+        if (null !== $objectGroup) {
+            $piggyBank->objectGroups()->sync([$objectGroup->id]);
+        }
+
+        return $piggyBank;
+
+    }
+
+
     /**
      * @param array $data
      *

app/Repositories/PiggyBank/PiggyBankRepository.php

@@ -393,4 +393,6 @@ class PiggyBankRepository implements PiggyBankRepositoryInterface
 
         return $set;
     }
+
+
 }

app/Repositories/PiggyBank/PiggyBankRepositoryInterface.php

@@ -36,6 +36,21 @@ use Illuminate\Support\Collection;
  */
 interface PiggyBankRepositoryInterface
 {
+    /**
+     * @param PiggyBank $piggyBank
+     * @param string    $objectGroupTitle
+     *
+     * @return PiggyBank
+     */
+    public function setObjectGroup(PiggyBank $piggyBank, string $objectGroupTitle): PiggyBank;
+
+    /**
+     * @param PiggyBank $piggyBank
+     *
+     * @return PiggyBank
+     */
+    public function removeObjectGroup(PiggyBank $piggyBank): PiggyBank;
+
     /**
      * @param PiggyBank $piggyBank
      * @param string    $amount