---
lang: en
title: 'API docs: openapi-v3.requestbody.array'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/loopbackio/loopback-next/tree/master/packages/openapi-v3
permalink: /doc/en/lb4/apidocs.openapi-v3.requestbody.array.html
---

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[Home](./index.md) &gt; [@loopback/openapi-v3](./openapi-v3.md) &gt; [requestBody](./openapi-v3.requestbody.md) &gt; [array](./openapi-v3.requestbody.array.md)

## requestBody.array() function

Define a requestBody of `array` type.

**Signature:**

```typescript
array: (itemSpec: SchemaObject | ReferenceObject, properties?: {
        description?: string;
        required?: boolean;
    }) => (target: object, member: string, index: number) => void
```

## Parameters

<table><thead><tr><th>

Parameter


</th><th>

Type


</th><th>

Description


</th></tr></thead>
<tbody><tr><td markdown="1">

itemSpec


</td><td markdown="1">

SchemaObject \| ReferenceObject


</td><td markdown="1">

the full item object


</td></tr>
<tr><td markdown="1">

properties


</td><td markdown="1">

{ description?: string; required?: boolean; }


</td><td markdown="1">

_(Optional)_ The requestBody properties other than `content`


</td></tr>
</tbody></table>

**Returns:**

(target: object, member: string, index: number) =&gt; void

## Example


```ts
export class MyController {
  @post('/greet')
  greet(@requestBody.array(
    {type: 'string'},
    {description: 'an array of names', required: false}
  ) names: string[]): string {
    return `Hello, ${names}`;
  }
}
```