fix: Обработка null значения в фильтре Where

src/Exception/FilterParameterValueIsNullException.php

+<?php
+
+declare(strict_types=1);
+
+namespace IQDEV\Packages\DoctrineHttpFilter\Exception;
+
+use Exception;
+
+class FilterParameterValueIsNullException extends Exception
+{
+    public function __construct(string $key)
+    {
+        parent::__construct('Filter parameter value of key [' . $key . '] is null.');
+    }
+}

src/Filter/Where.php

@@ -5,16 +5,22 @@ declare(strict_types=1);
 namespace IQDEV\Packages\DoctrineHttpFilter\Filter;
 
 use Doctrine\ORM\QueryBuilder;
+use IQDEV\Packages\DoctrineHttpFilter\Exception\FilterParameterValueIsNullException;
 use IQDEV\Packages\DoctrineHttpFilter\HttpFilter;
 
 final class Where extends HttpFilter
 {
+    /** @throws FilterParameterValueIsNullException */
     public function addToQuery(QueryBuilder $queryBuilder): QueryBuilder
     {
         $queryBuilder->where(
             $this->getColumn() . ' = :' . $this->getParameterKey(),
         );
 
+        if ($this->getHttpValue() === null) {
+            throw new FilterParameterValueIsNullException($this->field);
+        }
+
         $queryBuilder->setParameter($this->getParameterKey(), $this->getHttpValue());
 
         return $queryBuilder;

src/HttpFilter.php

@@ -15,7 +15,7 @@ abstract class HttpFilter
 
     public function __construct(
         protected string $tableAlias,
-        protected string $filed,
+        protected string $field,
         ?Request $request = null,
     ) {
         $this->request = $request ?? Request::createFromGlobals();
@@ -23,7 +23,7 @@ abstract class HttpFilter
 
     protected function getColumn(): string
     {
-        return $this->tableAlias . '.' . $this->filed;
+        return $this->tableAlias . '.' . $this->field;
     }
 
     protected function getHttpValue(): mixed
@@ -37,7 +37,7 @@ abstract class HttpFilter
             return null;
         }
 
-        return $filter[$this->filed] ?? null;
+        return $filter[$this->field] ?? null;
     }
 
     public function getParameterKey(): string