SolidJS•17mo ago

Setting cookies (or headers in general) from `createServerData$`

Is it possible to set cookies (or any other headers) from the fetcher passed to createServerData$? I have the following code:

export function routeData() {
  const user = createServerData$(async (_, { request }) => {
    const client = await createAuthenticatedClient(request);

    return client.request<MeQuery>(gql`
      // ...
    `);
  });

  const success = createServerData$(async (_, { request }) => {
    const session = await getSession(request);

    return session.get('success');
  });

  return { user, success };
}

export function routeData() {
  const user = createServerData$(async (_, { request }) => {
    const client = await createAuthenticatedClient(request);

    return client.request<MeQuery>(gql`
      // ...
    `);
  });

  const success = createServerData$(async (_, { request }) => {
    const session = await getSession(request);

    return session.get('success');
  });

  return { user, success };
}

getSession is just a wrapper around the cookie session storage that's built in to solid-start. When I call useRouteData<typeof routeData>() in my component I can get success from the session. success was set on a previous route as such:

  session.flash('success', 'Your email has been verified!');

  return redirect('/', {
    headers: { 'Set-Cookie': await storage.commitSession(session) },
  });

  session.flash('success', 'Your email has been verified!');

  return redirect('/', {
    headers: { 'Set-Cookie': await storage.commitSession(session) },
  });

Now I would like to commit the session with the flash message deleted. How can I do this from within createServerData$? It doesn't seem that I'm able to return a Response or anything like that, and redirect wouldn't make sense either.

2 Replies

knpwrsOP•17mo ago

I came across this post: https://discordapp.com/channels/722131463138705510/1057288732555878530/1057384833497714688 Which lead me to do the following: Inside routeData()

  const successData = createServerData$(async (_, { request }) => {
    const session = await getSession(request);

    return json(session.get('success') ?? '', {
      headers: { 'Set-Cookie': await commitSession(session) },
    });
  });

  return { user, successData };

  const successData = createServerData$(async (_, { request }) => {
    const session = await getSession(request);

    return json(session.get('success') ?? '', {
      headers: { 'Set-Cookie': await commitSession(session) },
    });
  });

  return { user, successData };

And then inside the component:

  const [success] = createResource(successData, (s) => s.json());

  const [success] = createResource(successData, (s) => s.json());

And then I can use it in my tsx!

<main>{success()}</main>

<main>{success()}</main>

Carlo Nyte•16mo ago

Thank you for sharing this. I'm currently facing the same issue and thought I was going crazy. I'm still confused why the data from createServerData$ isn't accessible to the component

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Setting cookies (or headers in general) from `createServerData$`