I was exploring Remix.run and making a sample app. I came across an issue that has been bothering me for some time now. Correct me if I am wrong: action() is for handling Form submission, and loader() is for fetching data initially.
For my application, I used mongoose to connect MongoDB, defined models, and defined querying function in a query.server.ts file. I want to fetch data from the database through a function defined in the query.server.ts file when an image is clicked on the UI. How can I do that without using forms? I cannot pre-fetch the data without knowing what image was clicked by the user.
You can create a resource route. These are like regular routes, but don't export a default component (no UI).
You can use the useFetcher hook and call fetcher.load() to call your resource route. The data is in fetcher.data.
// routes/query-data.ts
export const loader: LoaderFunction = async ({request}) => {
const url = new URL(request.url)
const img = url.searchParams.get('img')
const data = await getData(img)
return json(data)
}
// routes/route.tsx
export default function Route() {
const fetch = useFetcher()
const handleImgClick = (e) => {
const img = e.target
fetcher.load(`/query-data?img=${img.attr('src')}`)
}
return (
<div>
<img onClick={handleImageClick} src="/images/file.jpg" />
<pre>{ JSON.stringify(fetcher.data, null, 2) }</pre>
</div>
)
}