Mutate doesn't seem to be working

[Palmlight]

I tried mutating a parent url

eg: url={/users?type=${type}&paginate=10&page=${page}}

in a child component by doing

import { mutate } from "swr";

mutate(url);

but it doesn't revalidate.

Please am I doing something wrong?

I said the documentation is old because I also tried to use the documentation's

import useSWR, { useSWRConfig } from 'swr'

function App () {
const { mutate } = useSWRConfig()

but useSWRConfig doesn't seem to appear

[shuding]

mutate is working, we have tests covered. Which version of SWR are you currently using? Can you provide a bug reproduction on https://codesandbox.io?

[Palmlight]

I'm using

"swr": "^1.0.1",

I can't really reproduce on codesandbox as it's an internal api but the docs says to use useSWRConfig() which is not exported from swr. Then the mutate coming from swr doesn't work. I can show you a via a google meet or a zoom call

[shuding]

I just confirmed that useSWRConfig is correctly exported and mutate is working properly.

Can you at least create a reproduction on CodeSandbox to proof that "useSWRConfig() which is not exported from swr"? Happy to take a look if that's the case!

Furthermore, you can use a fake fetcher to reproduce any other issues, the actual API shouldn't matter.

[Palmlight]

Hi, useSWRConfig is working perfectly now. Thanks a lot but I have one more issue. If I have a url on a parent page and call mutate on the parent page.

Eg: I call mutate on index.jsx it works but if i call the mutate from a component eg: IndexComponent.jsx it doesn't mutate. Do I create a mutate function on the parent and pass down to the child or use just the URL in the child?

[Palmlight]

Passing a mutate function down to the child works perfectly can you confirm if this is a good practice. Hope I'm not stressing you out with my questions?
🥺

[shuding]

https://swr.vercel.app/docs/mutation

There're two kinds of mutate functions, one is returned by useSWR, bound to the key. Another one is the global one, that you can pass a specific key to it. But it doesn't matter where you call the mutate functions from.