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lang: en
title: 'API docs: filter.filtertemplate'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/loopbackio/loopback-next/tree/master/packages/filter
permalink: /doc/en/lb4/apidocs.filter.filtertemplate.html
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[Home](./index.md) > [@loopback/filter](./filter.md) > [filterTemplate](./filter.filtertemplate.md)
## filterTemplate() function
<b>Signature:</b>
```typescript
export declare function filterTemplate(strings: TemplateStringsArray, ...keys: any[]): (ctx: AnyObject) => any;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| strings | TemplateStringsArray | |
| keys | any\[\] | |
<b>Returns:</b>
(ctx: AnyObject) => any