diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1b91729..ee64093 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## WIP
+- Implementing a Trait for formatting data
+- Implementing getFormattedDateTime for getting value as formatted data
+
+## 0.3.10 - 2024-10-07
+- Implementing the `saveToJson()` method
+
 ## 0.3.9 - 2024-08-08
 - Implementing the `exists()` method
 
diff --git a/README.md b/README.md
index 0cb5c62..b76a99d 100644
--- a/README.md
+++ b/README.md
@@ -168,6 +168,19 @@ $value = $data->get(
 ); // 🫠
 ```
 
+### The `getFormattedDateTime()` for getting and formatting a date-time field value
+
+When working with date-time fields, consider utilizing the `getFormattedDateTime()` method instead of relying solely on `get()`. This approach not only retrieves the value but also formats it according to the specified date-time format, as defined by the second optional parameter `$format`.
+
+By default, this formatting is set to "Y-m-d H:i:s", providing a convenient and standardized output. However, customizing the format allows for more flexibility in presenting your data.
+
+Here are some key points:
+
+*   `getFormattedDateTime()` combines the functionality of `get()` with date-time formatting.
+*   The second parameter `$format` controls the date-time format used for formatting.
+*   Custom formats can be applied to provide tailored outputs for different use cases.
+
+
 ### The `getBlock()` method
 If you need to manage a complex array (nested array) or an array obtained from a complex JSON structure, you can access a portion of the array and obtain the `Block` object via the `getBlock()` method.
 
@@ -293,6 +306,21 @@ $data = Block::make($fruitsArray);
 $yamlString = $data->toYaml(); // YAML string
 ```
 
+### Saving JSON to a file with `saveToJson()`
+If you need to save the JSON string in a file using the content of the Block object, you can use the `saveToJson()` method.
+
+This is helpful when you are manipulating data with the Block class and at a certain point need to save the data in JSON string format to a file.
+The `saveToJson()` method has two parameters:
+
+- `filename`: the first parameter (mandatory) with the filename;
+- `overwrite`: the second parameter (optional), If the file exists, the file is not saved by default, unless you set the overwrite parameter as true.
+
+```php
+$data = Block::make($fruitsArray);
+$jsonString = $data->saveToJson('./fruits.json', true);
+```
+
+
 ## Loading Data
 
 ### Loading Data from JSON file
diff --git a/src/Block.php b/src/Block.php
index 43806d1..50c85cc 100644
--- a/src/Block.php
+++ b/src/Block.php
@@ -9,6 +9,7 @@
 use HiFolks\DataType\Traits\EditableBlock;
 use HiFolks\DataType\Traits\QueryableBlock;
 use HiFolks\DataType\Traits\ExportableBlock;
+use HiFolks\DataType\Traits\FormattableBlock;
 use HiFolks\DataType\Traits\IteratableBlock;
 use HiFolks\DataType\Traits\LoadableBlock;
 use HiFolks\DataType\Traits\ValidableBlock;
@@ -29,6 +30,8 @@ final class Block implements Iterator, ArrayAccess, Countable
     use LoadableBlock;
     use IteratableBlock;
     use ValidableBlock;
+    use FormattableBlock;
+
 
     /** @var array<int|string, mixed> */
     private array $data;
diff --git a/src/Traits/ExportableBlock.php b/src/Traits/ExportableBlock.php
index 43237e7..a09e8db 100644
--- a/src/Traits/ExportableBlock.php
+++ b/src/Traits/ExportableBlock.php
@@ -9,9 +9,9 @@
 trait ExportableBlock
 {
     /**
-    * Returns the native array
-    * @return array<int|string, mixed>
-        */
+     * Returns the native array
+     * @return array<int|string, mixed>
+     */
     public function toArray(): array
     {
         return $this->data;
@@ -53,4 +53,21 @@ public function toYaml(): string
     {
         return Yaml::dump($this->data, 3, 2);
     }
+
+    /**
+     * Saves the JSON String to a file
+     * @param string $filename file name for example "./file.json"
+     * @param bool $overwrite if the file already exists you can force overwriting
+     * @return bool true if the file is saved, if already exists and you don't want to
+     * force overwiting the file it returns false
+     */
+    public function saveToJson(string $filename, bool $overwrite = false): bool
+    {
+        if (file_exists($filename) && !$overwrite) {
+            return false;
+        }
+
+        file_put_contents($filename, $this->toJson());
+        return true;
+    }
 }
diff --git a/src/Traits/FormattableBlock.php b/src/Traits/FormattableBlock.php
new file mode 100644
index 0000000..cef336c
--- /dev/null
+++ b/src/Traits/FormattableBlock.php
@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace HiFolks\DataType\Traits;
+
+trait FormattableBlock
+{
+    /**
+     * Get and format as date the element with $key
+     * @param mixed $key the key, can be nested for example "some.datetime"
+     * @param string $format the format default is "Y-m-d H:i:s"
+     * @param mixed $defaultValue, the value returned in the case the key not exists
+     * @param non-empty-string $charNestedKey the separator for nested keys, default is "."
+     */
+    public function getFormattedDateTime(
+        mixed $key,
+        string $format = "Y-m-d H:i:s",
+        mixed $defaultValue = null,
+        string $charNestedKey = ".",
+    ): string|null {
+        $value =  $this->get($key, $defaultValue, $charNestedKey);
+        if (is_null($value)) {
+            return null;
+        }
+        $date = new \DateTimeImmutable($value);
+
+        return $date->format($format);
+    }
+}
diff --git a/src/Traits/QueryableBlock.php b/src/Traits/QueryableBlock.php
index 1dd1c5b..d90b579 100644
--- a/src/Traits/QueryableBlock.php
+++ b/src/Traits/QueryableBlock.php
@@ -151,7 +151,7 @@ public function groupBy(string|int $field): self
 
     private static function castVariableForStrval(mixed $property): bool|float|int|string|null
     {
-        return match(gettype($property)) {
+        return match (gettype($property)) {
             'boolean' => $property,
             'double' => $property,
             'integer' => $property,
diff --git a/tests/Feature/UrlTest.php b/tests/Feature/UrlTest.php
index 22a7248..2fa9ae8 100644
--- a/tests/Feature/UrlTest.php
+++ b/tests/Feature/UrlTest.php
@@ -35,7 +35,7 @@
     $posts = Block::fromJsonUrl($url)
     ->getBlock("posts")
         ->where(
-            field:"tags",
+            field: "tags",
             operator: "in",
             value: "love",
             preseveKeys: false,
diff --git a/tests/Unit/Traits/ExportableTest.php b/tests/Unit/Traits/ExportableTest.php
index dae8a15..13ea415 100644
--- a/tests/Unit/Traits/ExportableTest.php
+++ b/tests/Unit/Traits/ExportableTest.php
@@ -62,3 +62,41 @@ function () use ($fruitsArray): void {
         expect($string1)->toBe($string2);
     },
 );
+
+test(
+    'Test saveToJson',
+    function () use ($fruitsArray): void {
+        $data = Block::make($fruitsArray);
+        $data->saveToJson('fruits.json');
+        expect(file_exists('fruits.json'))->toBeTrue();
+        unlink('fruits.json');
+    },
+);
+
+test(
+    'Test saveToJson with overwrite',
+    function () use ($fruitsArray): void {
+        $data = Block::make($fruitsArray);
+        $data->saveToJson('fruits.json');
+        expect(file_exists('fruits.json'))->toBeTrue();
+
+        $result = $data->saveToJson('fruits.json', true);
+        expect($result)->toBeTrue();
+
+        unlink('fruits.json');
+    },
+);
+
+test(
+    'Test saveToJson with existing file',
+    function () use ($fruitsArray): void {
+        $data = Block::make($fruitsArray);
+        $data->saveToJson('fruits.json');
+        expect(file_exists('fruits.json'))->toBeTrue();
+
+        $result = $data->saveToJson('fruits.json');
+        expect($result)->toBeFalse();
+
+        unlink('fruits.json');
+    },
+);
diff --git a/tests/Unit/Traits/FormattableBlokTest.php b/tests/Unit/Traits/FormattableBlokTest.php
new file mode 100644
index 0000000..3a8d2d4
--- /dev/null
+++ b/tests/Unit/Traits/FormattableBlokTest.php
@@ -0,0 +1,19 @@
+<?php
+
+use HiFolks\DataType\Block;
+
+test(
+    'Format field to data',
+    function (): void {
+        $data1 = Block::fromJsonFile(__DIR__ . "/../../data/commits-json/commits-10-p1.json");
+        $data2 = Block::fromJsonFile(__DIR__ . "/../../data/commits-json/commits-10-p2.json");
+        $data3 = Block::fromJsonFile(__DIR__ . "/../../data/commits-json/commits-10-p3.json");
+
+        expect($data1)->toHaveCount(10);
+        expect($data2)->toHaveCount(10);
+        expect($data1->getFormattedDateTime("0.commit.author.date", "Y"))->toBe("2024");
+        expect($data1->getFormattedDateTime("0.commit.author.date", "Y-m-d"))->toBe("2024-06-28");
+        expect($data1->getFormattedDateTime("0.commit.author.dateNOTEXISTS", "Y-m-d"))->toBeNull();
+
+    },
+);