Data Overview

Each route has the ability to add HTTP request and response handlers, allowing for developers to retrieve and modify data. The handlers can also be used by endpoints, which only respond with data rather than a page's HTML.

This feature enables you to handle any request event, have side effects on the request pipeline, just before you render the component and respond with custom content. It is available to pages, layouts and endpoint routes, but not on regular components.

Request and Response Handlers

On pages, layouts, and endpoints, we can access request data by implementing request handler functions such as onGet, onPost, onPut, etc. These functions are executed according to the HTTP method used for this route.

Additonally, an onRequest function can be used to handle any request method, rather than a specific one. For example, if both onGet and onRequest is provided, for a GET request, the onGet will be called. However, in this scenario, if a POST request method came in, then the onRequest handler would be called since an onPost was not provided. The onRequest is available as a catch-all to any request methods that do not have a specific method.

import type { RequestHandler } from '@builder.io/qwik-city';

export const onGet: RequestHandler<ProductData> = async ({ params }) => {
  // put your DB access here (hard coding data for simplicity)
  return {
    skuId: params.skuId,
    price: 123.45,
    description: `Description for ${params.skuId}`,
  };
};

Request Event

The request handler functions receive a RequestEvent argument which has the following properties: