@loopback/docs/site/apidocs/repository.entitycrudrepository.update.md

Documentation for LoopBack 4

---
lang: en
title: 'API docs: repository.entitycrudrepository.update'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
permalink: /doc/en/lb4/apidocs.repository.entitycrudrepository.update.html
---

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[Home](./index.md) &gt; [@loopback/repository](./repository.md) &gt; [EntityCrudRepository](./repository.entitycrudrepository.md) &gt; [update](./repository.entitycrudrepository.update.md)

## EntityCrudRepository.update() method

Update an entity

<b>Signature:</b>

```typescript
update(entity: DataObject<T>, options?: Options): Promise<void>;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  entity | <code>DataObject&lt;T&gt;</code> | Entity to be updated |
|  options | <code>Options</code> | Options for the operations |

<b>Returns:</b>

`Promise<void>`

A promise that will be resolve if the operation succeeded or will be rejected if the entity was not found.