Add optional RenameIdFieldProcessor

Close #33

README.md

@@ -66,6 +66,7 @@ return [
             // Default is an empty array.
             'processors' => [
                 \Hedii\LaravelGelfLogger\Processors\NullStringProcessor::class,
+                \Hedii\LaravelGelfLogger\Processors\RenameIdFieldProcessor::class,
                 // another processor...
             ],
 

src/Processors/RenameIdFieldProcessor.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace Hedii\LaravelGelfLogger\Processors;
+
+class RenameIdFieldProcessor
+{
+    /**
+     * Rename "id" field  to "_id" (additional field 'id' is not allowed).
+     *
+     * @see https://github.com/hedii/laravel-gelf-logger/issues/33
+     */
+    public function __invoke(array $record): array
+    {
+        foreach ($record['context'] as $key => $value) {
+            if ($key === 'id' && ! array_key_exists('_id', $record['context'])) {
+                unset($record['context']['id']);
+
+                $record['context']['_id'] = $value;
+            }
+        }
+
+        return $record;
+    }
+}

tests/Processors/RenameIdFieldProcessorTest.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace Hedii\LaravelGelfLogger\Tests\Processors;
+
+use Hedii\LaravelGelfLogger\Processors\RenameIdFieldProcessor;
+use PHPUnit\Framework\TestCase;
+
+class RenameIdFieldProcessorTest extends TestCase
+{
+    /** @test */
+    public function it_should_rename_id_field(): void
+    {
+        $payload = [
+            'context' => ['id' => 'bar']
+        ];
+
+        $processor = new RenameIdFieldProcessor();
+
+        $this->assertSame(['context' => ['_id' => 'bar']], $processor($payload));
+    }
+}