Create specific transformers

Author: juchi

FieldType/CheckboxField.php

@@ -3,7 +3,7 @@
 namespace Sherlockode\ConfigurationBundle\FieldType;
 
 use Sherlockode\ConfigurationBundle\Parameter\ParameterDefinition;
-use Sherlockode\ConfigurationBundle\Transformer\CallbackTransformer;
+use Sherlockode\ConfigurationBundle\Transformer\BooleanTransformer;
 use Sherlockode\ConfigurationBundle\Transformer\TransformerInterface;
 use Symfony\Component\Form\Extension\Core\Type\CheckboxType;
 
@@ -36,13 +36,6 @@ public function getName()
      */
     public function getModelTransformer(ParameterDefinition $definition)
     {
-        return new CallbackTransformer(
-            function ($data) {
-                return (bool)$data;
-            },
-            function ($data) {
-                return $data ? 1 : 0;
-            }
-        );
+        return new BooleanTransformer();
     }
 }

FieldType/ChoiceField.php

@@ -3,7 +3,7 @@
 namespace Sherlockode\ConfigurationBundle\FieldType;
 
 use Sherlockode\ConfigurationBundle\Parameter\ParameterDefinition;
-use Sherlockode\ConfigurationBundle\Transformer\CallbackTransformer;
+use Sherlockode\ConfigurationBundle\Transformer\ArrayTransformer;
 use Sherlockode\ConfigurationBundle\Transformer\TransformerInterface;
 use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
 
@@ -37,24 +37,6 @@ public function getName()
      */
     public function getModelTransformer(ParameterDefinition $definition)
     {
-        return new CallbackTransformer(
-            function ($data) {
-                if (!$data) {
-                    return null;
-                }
-                if (false !== ($unserialized = @unserialize($data))) {
-                    return $unserialized;
-                }
-
-                return $data;
-            },
-            function ($data) {
-                if (is_array($data)) {
-                    return serialize($data);
-                }
-
-                return $data;
-            }
-        );
+        return new ArrayTransformer();
     }
 }

Transformer/ArrayTransformer.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Sherlockode\ConfigurationBundle\Transformer;
+
+class ArrayTransformer implements TransformerInterface
+{
+    public function transform($data)
+    {
+        if (!$data) {
+            return null;
+        }
+        if (false !== ($unserialized = @unserialize($data))) {
+            return $unserialized;
+        }
+
+        return null;
+    }
+
+    public function reverseTransform($data)
+    {
+        if (is_array($data)) {
+            return serialize($data);
+        }
+
+        return $data;
+    }
+}

Transformer/BooleanTransformer.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Sherlockode\ConfigurationBundle\Transformer;
+
+class BooleanTransformer implements TransformerInterface
+{
+    public function transform($data)
+    {
+        return (bool)$data;
+    }
+
+    public function reverseTransform($data)
+    {
+        return $data ? 1 : 0;
+    }
+}