@loopback/docs
Version:
Documentation files rendered at [https://loopback.io](https://loopback.io)
47 lines (33 loc) • 1.82 kB
Markdown
---
lang: en
title: 'API docs: metadata.methodparameterdecoratorfactory'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/loopbackio/loopback-next/tree/master/packages/metadata
permalink: /doc/en/lb4/apidocs.metadata.methodparameterdecoratorfactory.html
---
<!-- Do not edit this file. It is automatically generated by API Documenter. -->
[Home](./index.md) > [@loopback/metadata](./metadata.md) > [MethodParameterDecoratorFactory](./metadata.methodparameterdecoratorfactory.md)
## MethodParameterDecoratorFactory class
Factory for method level parameter decorator.
<b>Signature:</b>
```typescript
export declare class MethodParameterDecoratorFactory<T> extends DecoratorFactory<T, MetadataMap<T[]>, MethodDecorator>
```
<b>Extends:</b> [DecoratorFactory](./metadata.decoratorfactory.md)<!-- --><T, [MetadataMap](./metadata.metadatamap.md)<!-- --><T\[\]>, MethodDecorator>
## Example
For example, the following code uses `@param` to declare two parameters for `greet()`<!-- -->.
```ts
class MyController {
@param('name') // Parameter 0
@param('msg') // Parameter 1
greet() {}
}
```
## Methods
| Method | Modifiers | Description |
| --- | --- | --- |
| [create()](./metadata.methodparameterdecoratorfactory.create.md) | | |
| [createDecorator(key, spec, options)](./metadata.methodparameterdecoratorfactory.createdecorator.md) | <code>static</code> | Create a method decorator function |
| [mergeWithInherited(inheritedMetadata, target, methodName, methodDescriptor)](./metadata.methodparameterdecoratorfactory.mergewithinherited.md) | | |
| [mergeWithOwn(ownMetadata, target, methodName, methodDescriptor)](./metadata.methodparameterdecoratorfactory.mergewithown.md) | | |