diff --git a/src/Query/Having.php b/src/Query/Having.php
index 6b03fc0..71f6144 100644
--- a/src/Query/Having.php
+++ b/src/Query/Having.php
@@ -5,6 +5,8 @@ namespace Ulmus\Query;
 use Ulmus\Common\EntityField,
     Ulmus\Common\Sql;
 
+use Ulmus\QueryBuilder\QueryBuilderInterface;
+
 class Having extends Fragment {
     const SQL_TOKEN = "HAVING"; 
 
diff --git a/src/Query/Join.php b/src/Query/Join.php
index bf48920..6cfdde1 100644
--- a/src/Query/Join.php
+++ b/src/Query/Join.php
@@ -4,6 +4,8 @@ namespace Ulmus\Query;
 
 use Ulmus\Repository\ConditionTrait;
 
+use Ulmus\QueryBuilder\QueryBuilderInterface;
+
 class Join extends Fragment
 {
     use ConditionTrait;
diff --git a/src/Query/Set.php b/src/Query/Set.php
index 11ad8aa..abca900 100644
--- a/src/Query/Set.php
+++ b/src/Query/Set.php
@@ -2,6 +2,8 @@
 
 namespace Ulmus\Query;
 
+use Ulmus\QueryBuilder\QueryBuilderInterface;
+
 class Set extends Fragment {
 
     public int $order = 0;
@@ -25,7 +27,7 @@ class Set extends Fragment {
         return $this;
     }
 
-    public function render() /* : mixed */
+    public function render() : mixed
     {                    
         return $this->renderSegments([
             'SET', $this->renderParameterPlaceholders(),
diff --git a/src/Query/Values.php b/src/Query/Values.php
index 7053c43..44712b5 100644
--- a/src/Query/Values.php
+++ b/src/Query/Values.php
@@ -2,6 +2,8 @@
 
 namespace Ulmus\Query;
 
+use Ulmus\QueryBuilder\QueryBuilderInterface;
+
 class Values extends Fragment {
 
     public int $order = 0;
diff --git a/src/Query/Where.php b/src/Query/Where.php
index 007df5b..ca9aef9 100644
--- a/src/Query/Where.php
+++ b/src/Query/Where.php
@@ -4,6 +4,8 @@ namespace Ulmus\Query;
 
 use Ulmus\Common\Sql;
 
+use Ulmus\QueryBuilder\QueryBuilderInterface;
+
 class Where extends Fragment {
     const OPERATOR_LIKE = "LIKE";
     const OPERATOR_EQUAL = "=";
diff --git a/src/QueryBuilder/Sql/MysqlQueryBuilder.php b/src/QueryBuilder/Sql/MysqlQueryBuilder.php
index 28b5de0..86a6b72 100644
--- a/src/QueryBuilder/Sql/MysqlQueryBuilder.php
+++ b/src/QueryBuilder/Sql/MysqlQueryBuilder.php
@@ -507,6 +507,15 @@ class MysqlQueryBuilder extends SqlQueryBuilder
             $key = ":p" . $this->parameterIndex++;
         }
 
+        if ($value instanceof \UnitEnum) {
+            if ($value instanceof \BackedEnum) {
+                $value = $value->value;
+            }
+            else {
+                throw new \InvalidArgumentException("Using UnitEnum as a parameter is currently unsupported. Try using a BackedEnum instead.");
+            }
+        }
+
         $this->parameters[$key] = $value;
 
         return $key;
diff --git a/src/SearchRequest/Attribute/PropertyValueModifier.php b/src/SearchRequest/Attribute/PropertyValueModifier.php
new file mode 100644
index 0000000..69755c0
--- /dev/null
+++ b/src/SearchRequest/Attribute/PropertyValueModifier.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace Ulmus\SearchRequest\Attribute;
+
+#[\Attribute(\Attribute::TARGET_PROPERTY | \Attribute::IS_REPEATABLE)]
+abstract class PropertyValueModifier
+{
+    public abstract function run(mixed $value) : mixed;
+}
\ No newline at end of file
diff --git a/src/SearchRequest/Attribute/PropertyValueModifier/Split.php b/src/SearchRequest/Attribute/PropertyValueModifier/Split.php
new file mode 100644
index 0000000..2a47b73
--- /dev/null
+++ b/src/SearchRequest/Attribute/PropertyValueModifier/Split.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace Ulmus\SearchRequest\Attribute\PropertyValueModifier;
+
+use Ulmus\SearchRequest\Attribute\PropertyValueModifier;
+
+#[\Attribute(\Attribute::TARGET_PROPERTY)]
+class Split extends PropertyValueModifier
+{
+    public function __construct(
+        public string $delimiter = ',',
+    ) {}
+
+    public function run(mixed $value) : mixed
+    {
+        return explode($this->delimiter, $value);
+    }
+}
\ No newline at end of file
diff --git a/src/SearchRequest/Attribute/SearchGroupBy.php b/src/SearchRequest/Attribute/SearchGroupBy.php
index 839f0b1..235516c 100644
--- a/src/SearchRequest/Attribute/SearchGroupBy.php
+++ b/src/SearchRequest/Attribute/SearchGroupBy.php
@@ -9,8 +9,7 @@ class SearchGroupBy extends SearchParameter
 {
     public function __construct(
         public ? string $parameter = null,
-        public ? string $field = null,
-        public bool $toggle = false,
+        public null|string|\Stringable|array $field = null,
         public SearchMethodEnum $method = SearchMethodEnum::GroupBy,
     ) {}
 }
\ No newline at end of file
diff --git a/src/SearchRequest/Attribute/SearchLike.php b/src/SearchRequest/Attribute/SearchLike.php
index 28756ee..e4a25c4 100644
--- a/src/SearchRequest/Attribute/SearchLike.php
+++ b/src/SearchRequest/Attribute/SearchLike.php
@@ -9,7 +9,7 @@ class SearchLike extends SearchParameter
 {
     public function __construct(
         public ? string $parameter = null,
-        public ? string $field = null,
+        public null|string|\Stringable|array $field = null,
         public bool $toggle = false,
         public SearchMethodEnum $method = SearchMethodEnum::Like,
     ) {}
diff --git a/src/SearchRequest/Attribute/SearchOrderBy.php b/src/SearchRequest/Attribute/SearchOrderBy.php
index 9f74ee8..96c3e02 100644
--- a/src/SearchRequest/Attribute/SearchOrderBy.php
+++ b/src/SearchRequest/Attribute/SearchOrderBy.php
@@ -7,10 +7,13 @@ use Ulmus\SearchRequest\SearchMethodEnum;
 #[\Attribute(\Attribute::TARGET_PROPERTY)]
 class SearchOrderBy extends SearchParameter
 {
+    public const ASCENDING = "ASC";
+
+    public const DESCENDING = "DESC";
+
     public function __construct(
         public ? string $parameter = null,
-        public ? string $field = null,
-        public bool $toggle = false,
-        public SearchMethodEnum $method = SearchMethodEnum::OrderByAsc,
+        public null|string|\Stringable|array $field = null,
+        public null|SearchMethodEnum $order = null,
     ) {}
 }
\ No newline at end of file
diff --git a/src/SearchRequest/Attribute/SearchParameter.php b/src/SearchRequest/Attribute/SearchParameter.php
index 703d4bd..c234193 100644
--- a/src/SearchRequest/Attribute/SearchParameter.php
+++ b/src/SearchRequest/Attribute/SearchParameter.php
@@ -7,10 +7,6 @@ use Ulmus\SearchRequest\SearchMethodEnum;
 #[\Attribute(\Attribute::TARGET_PROPERTY)]
 class SearchParameter
 {
-    public function __construct(
-        public ? string $parameter = null,
-        public ? string $field = null,
-        public bool $toggle = false,
-        public SearchMethodEnum $method = SearchMethodEnum::Manual,
-    ) {}
+
+
 }
\ No newline at end of file
diff --git a/src/SearchRequest/Attribute/SearchWhere.php b/src/SearchRequest/Attribute/SearchWhere.php
index c8d4678..959672c 100644
--- a/src/SearchRequest/Attribute/SearchWhere.php
+++ b/src/SearchRequest/Attribute/SearchWhere.php
@@ -9,7 +9,7 @@ class SearchWhere extends SearchParameter
 {
     public function __construct(
         public ? string $parameter = null,
-        public ? string $field = null,
+        public null|string|\Stringable|array $field = null,
         public bool $toggle = false,
         public SearchMethodEnum $method = SearchMethodEnum::Where,
     ) {}
diff --git a/src/SearchRequest/SearchMethodEnum.php b/src/SearchRequest/SearchMethodEnum.php
index 8dfee53..d8e6e15 100644
--- a/src/SearchRequest/SearchMethodEnum.php
+++ b/src/SearchRequest/SearchMethodEnum.php
@@ -9,7 +9,4 @@ enum SearchMethodEnum
     case Like;
     case LikeLeft;
     case LikeRight;
-    case OrderByAsc;
-    case OrderByDesc;
-    case GroupBy;
 }
diff --git a/src/SearchRequest/SearchRequestFromRequestTrait.php b/src/SearchRequest/SearchRequestFromRequestTrait.php
index fda4aa4..d489221 100644
--- a/src/SearchRequest/SearchRequestFromRequestTrait.php
+++ b/src/SearchRequest/SearchRequestFromRequestTrait.php
@@ -3,6 +3,8 @@
 namespace Ulmus\SearchRequest;
 
 use Psr\Http\Message\ServerRequestInterface;
+use Ulmus\SearchRequest\Attribute\SearchGroupBy;
+use Ulmus\SearchRequest\Attribute\SearchOrderBy;
 use Ulmus\SearchRequest\Attribute\SearchParameter;
 use Ulmus\SearchRequest\Attribute\SearchWhere;
 
@@ -18,43 +20,71 @@ trait SearchRequestFromRequestTrait
 
     public function fromRequest(ServerRequestInterface $request)
     {
-        $get = new \ArrayObject(array_filter($request->getQueryParams(), function($i) { return $i !== ""; }));
+        $queryParams = new \ArrayObject(array_filter($request->getQueryParams(), function($i) { return ! is_null($i) && $i !== ""; }));
 
-        $this->page = $get->offsetExists('page') ? $get['page'] : 1;
+        $this->page = $queryParams->offsetExists('page') ? $queryParams['page'] : 1;
 
         $classReflection = new \ReflectionClass($this);
 
         foreach($classReflection->getProperties() as $property) {
+            $attributeList = $property->getAttributes();
 
-            foreach($property->getAttributes() as $attributeReflection) {
-                $attribute = $attributeReflection->newInstance();
+            $attributeReflection = array_filter($attributeList, fn($e) => $e->newInstance() instanceof Attribute\SearchParameter);
 
-                # We can't simply pass this class as first arguments of getAttributes() since it do not check for inheritance
-                if (! $attribute instanceof Attribute\SearchParameter) {
-                    continue;
+            if ($attributeReflection) {
+                $attribute = $attributeReflection[0]->newInstance();
+
+                $propertyName = $property->getName();
+                $fieldName = $attribute->field ?? $propertyName;
+                $queryParamName = $attribute->parameter ?? $propertyName;
+
+                $field = \Ulmus\Attribute\Attribute::handleArrayField($fieldName, false);;
+
+                $value = $queryParams->offsetExists($queryParamName) ? $this->transformValue($attributeList, $queryParams[$queryParamName]) : null;
+
+                if ($attribute instanceof SearchWhere) {
+                    if ($attribute->toggle) {
+                        $this->$propertyName = $queryParams->offsetExists($queryParamName);
+                    }
+                    elseif ($value !== null) {
+                        $this->$propertyName = $value;
+                    }
+
+                    $this->parseAttributeMethod($attribute, $field, $propertyName);
                 }
+                elseif ($attribute instanceof SearchOrderBy) {
+                    if ($value !== null) {
+                        $this->$propertyName = $value;
+                    }
 
-                $propertyName =  $property->getName();
-                $fieldName =  $attribute->field ?? $property->getName();
-                $queryParamName = $attribute->parameter ?? $property->getName();
-
-                if ($attribute->toggle) {
-                    $this->$propertyName = $get->offsetExists('rental');
-                } else {
-                    $this->$propertyName = $get->offsetExists($queryParamName) ? $get[$queryParamName] : null;
+                    $this->parseAttributeDefaultOrder($attribute, $field, $propertyName);
                 }
-
-                $field = (string) $fieldName;
-
-                $this->parseAttributeMethod($attribute, $field, $propertyName);
             }
         }
 
         return $this;
     }
 
+    protected function transformValue(array $attributeList, mixed $value, ) : mixed
+    {
+        $transforms = array_map(function($e) {
+            $instance = $e->newInstance();
+            return $instance instanceof Attribute\PropertyValueModifier ? $e->newInstance() : null;
+        }, $attributeList);
+
+        foreach(array_filter($transforms) as $transform) {
+            $value = $transform->run($value);
+        }
+
+        return $value;
+    }
+
     protected function parseAttributeMethod(object $attribute, string $field, string $propertyName,) : void
     {
+        if (! isset($this->$propertyName)) {
+            return;
+        }
+
         switch ($attribute->method) {
             case SearchMethodEnum::Where:
                 $this->wheres[$field] = $this->$propertyName;
@@ -71,18 +101,21 @@ trait SearchRequestFromRequestTrait
             case SearchMethodEnum::LikeRight:
                 $this->likes[$field] = "{$this->$propertyName}%";
                 break;
-
-            case SearchMethodEnum::OrderByAsc:
-                $this->orders[$field] = "ASC";
-                break;
-
-            case SearchMethodEnum::OrderByDesc:
-                $this->orders[$field] = "DESC";
-                break;
-
-            case SearchMethodEnum::GroupBy:
-                $this->groups[$field] = "DESC";
-                break;
         }
     }
+
+    protected function parseAttributeDefaultOrder(object $attribute, string $field, mixed $propertyName,) : void
+    {
+        $this->orders[$field] = $this->$propertyName;
+    }
+
+    # @TODO !
+   /* protected function parseAttributeGroupBy(object $attribute, string $field, string $propertyName,) : void
+    {
+        switch ($attribute->order) {
+            case SearchMethodEnum::GroupBy:
+                $this->groups[$field];
+                break;
+        }
+    }*/
 }
\ No newline at end of file