Display null values as null instead of empty strings

Author: mnabialek

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 All notable changes to this project will be documented in this file.
 
+## [2.0.3] - 2018-06-13
+### Changed
+- Null values are now displayed as **null** instead of empty strings
+
 ## [2.0.2] - 2018-05-12
 ### Fixed
 - Fix support for Lumen

readme.md

@@ -88,6 +88,10 @@ Using this package is free of charge, however to keep it up-to-date and add new
 
 When upgrading from `1.*` version you should remove current `sql_logger.php` config file and replace this with new one (see installation step). You should also use new variables in `.env` file (old won't be used).
 
+### Authors
+
+Author of this awesome package is **[Marcin Nabiałek](http://marcin.nabialek.org/en/)**  and [Contributors](https://github.com/mnabialek/laravel-sql-logger/graphs/contributors)
+
 ### Changes
 
 All changes are listed in [Changelog](CHANGELOG.md)

src/Objects/Concerns/ReplacesBindings.php

@@ -19,14 +19,29 @@ protected function replaceBindings($sql, array $bindings)
         $generalRegex = $this->getRegex();
 
         foreach ($this->formatBindings($bindings) as $key => $binding) {
-            $value = is_numeric($binding) ? $binding : "'" . $binding . "'";
             $regex = is_numeric($key) ? $generalRegex : $this->getNamedParameterRegex($key);
-            $sql = preg_replace($regex, $value, $sql, 1);
+            $sql = preg_replace($regex, $this->value($binding), $sql, 1);
         }
 
         return $sql;
     }
 
+    /**
+     * Get final value that will be displayed in query.
+     *
+     * @param mixed $value
+     *
+     * @return int|string
+     */
+    protected function value($value)
+    {
+        if ($value === null) {
+            return 'null';
+        }
+
+        return is_numeric($value) ? $value : "'" . $value . "'";
+    }
+
     /**
      * Get regex to be used for named parameter with given name.
      *

tests/Objects/SqlQueryTest.php

@@ -135,6 +135,23 @@ public function it_handles_both_colon_and_non_colon_parameters()
 
         $expectedSql = <<<EOF
 SELECT * FROM tests WHERE a = 'test@example.com' AND b = 'test';
+EOF;
+
+        $this->assertSame($expectedSql, $query->get());
+    }
+
+    /** @test */
+    public function it_leaves_null_values_not_changed()
+    {
+        $sql = <<<EOF
+UPDATE tests SET a = :email, b = :something WHERE id=:id;
+EOF;
+
+        $bindings = [':email' => 'test@example.com', 'something' => null, 'id' => 5];
+        $query = new SqlQuery(56, $sql, $bindings, 130);
+
+        $expectedSql = <<<EOF
+UPDATE tests SET a = 'test@example.com', b = null WHERE id=5;
 EOF;
 
         $this->assertSame($expectedSql, $query->get());