# Update

When you need to update only part of the document, you can specify which properties should be updated. You can benefit from it in many ways: you don't need to prefetch all the data upfront, reduce the payload of a request, increment some property without replacing the entire document, ... If you want to replace the entire document, please refer to ReplaceOne action.

{% openapi src="/files/xbBaDgC6opDYR2pG5sLT" path="/{version}/db/{CollectionName}/{Id}" method="patch" expanded="true" %}
[openapi.json](https://760328771-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LwSkuCpTNI_AerL8J2a%2Fuploads%2FCpzJktmKXD6FMPSah1nK%2Fopenapi.json?alt=media\&token=854cdd6a-61b2-49a5-99f4-6bc091e5c3d6)
{% endopenapi %}

{% openapi src="/files/xbBaDgC6opDYR2pG5sLT" path="/{version}/db/{CollectionName}" method="patch" expanded="false" %}
[openapi.json](https://760328771-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LwSkuCpTNI_AerL8J2a%2Fuploads%2FCpzJktmKXD6FMPSah1nK%2Fopenapi.json?alt=media\&token=854cdd6a-61b2-49a5-99f4-6bc091e5c3d6)
{% endopenapi %}

{% tabs %}
{% tab title=".NET" %}

```csharp
var client = new CodeMashClient(apiKey, projectId);
var service = new CodeMashRepository<Person>(client);

var person = new Person { Id = "record_id" Name = "Peter" };
var updateDefinition = Builders<Person>.Update.Set(x => x.Name , "Peter II");

await service.UpdateOneRequest(
    x => x.Id == person.Id,
    updateDefinition,
    new DatabaseUpdateOneOptions()
);
```

{% hint style="info" %}
Check the information about [entities](broken://pages/-M-6_vT8PDXfwQxGKlF9) on how your class objects are serialized.
{% endhint %}
{% endtab %}

{% tab title="Node" %}

```javascript
import { db } from 'codemash';

export async function activateEmployee(id) {

    return await db.updateRecord('employees', 
        { _id: id }, 
        { $set: { 'is_active' : 1 }});
}

```

{% endtab %}

{% tab title="PHP" %}

```php
use Codemash\CodemashClient;
use Codemash\CodemashDb;

class CodemashService
{
    protected CodemashDb $codemashDb;
    protected string $collectionName = '{YOUR_COLLECTION_NAME}';

    public function __construct()
    {
        $secretKey = '{YOUR_SECRET_KEY}';
        $projectId = '{YOUR_PROJECT_ID}';

        $client = new CodemashClient($secretKey, $projectId);
        $this->codemashDb = new CodemashDb($client);
    }

    public function updateOne()
    {
        $responseData = $this->codemashDb->updateOne([
        	'collectionName' => 'employees',
        	'id' => '{EMPLOYEE_ID}',
        	'update' => [
        		'$set' => [
        			'address' => 'Chicago',
        		],
        	],
        ]);
    }
}
```

{% endtab %}
{% endtabs %}

{% hint style="info" %}
Check the docs on how to form [filters](/other-topics/list-parameters/filter.md).
{% endhint %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.codemash.io/api/database/collections/update.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.