Add toPrettyJson to JsonResource

src/Illuminate/Http/Resources/Json/JsonResource.php

@@ -135,7 +135,7 @@ public function toArray(Request $request)
     }
 
     /**
-     * Convert the model instance to JSON.
+     * Convert the resource to JSON.
      *
      * @param  int  $options
      * @return string
@@ -153,6 +153,18 @@ public function toJson($options = 0)
         return $json;
     }
 
+    /**
+     * Convert the resource to a pretty print formatted JSON.
+     *
+     * @return string
+     *
+     * @throws \Illuminate\Database\Eloquent\JsonEncodingException
+     */
+    public function toPrettyJson()
+    {
+        return $this->toJson(JSON_PRETTY_PRINT);
+    }
+
     /**
      * Get any additional data that should be returned with the resource array.
      *

tests/Http/JsonResourceTest.php

@@ -46,4 +46,23 @@ public function testJsonResourceToJsonSucceedsWithPriorErrors(): void
 
         $this->assertSame('{"foo":"bar"}', $resource->toJson(JSON_THROW_ON_ERROR));
     }
+
+    public function testJsonResourceToPrettyPrint(): void
+    {
+        $model = new class extends Model {
+        };
+
+        $resource = m::mock(JsonResource::class, ['resource' => $model])
+            ->makePartial()
+            ->shouldReceive('jsonSerialize')->once()->andReturn(['foo' => 'bar', 'bar' => 'foo'])
+            ->getMock();
+
+        $results = $resource->toPrettyJson();
+        $expected = $resource->toJson(JSON_PRETTY_PRINT);
+
+        $this->assertJsonStringEqualsJsonString($expected, $results);
+        $this->assertSame($expected, $results);
+        $this->assertStringContainsString("\n", $results);
+        $this->assertStringContainsString('    ', $results);
+    }
 }