What is the cookies.set(...) // set cookie about?

philippe1 · October 18, 2020, 5:46pm

Hi everyone,

I followed the nodeJS documentation to integrate live preview here : https://prismic.io/docs/nodejs/beyond-the-api/previews-and-the-prismic-toolbar
It works fine, but I have no idea what the line cookies.set(...) // set cookie means, which cookie should I set ?

Thanks

Phil · October 19, 2020, 3:50pm

Hey Philippe,

Maybe the documentation is very clear, the cookies being set are coming from Prismic. That's how the preview is created, these cookies are loaded on top of your website application in the browser, thus requiring no rebuild.

I think it's maybe clearer in our Node.js website example as to how you should set up the preview route.

github.com

prismicio/nodejs-website/blob/e9a867c510b2e4d5ef3a8779bbf695eba5795608/app.js#L53-L68


/*
 * Preconfigured prismic preview
 */
app.get('/preview', async ( req, res) => {
  const { token, documentId } = req.query;
  if(token){
    try{
      const redirectUrl = (await req.prismic.api.getPreviewResolver(token, documentId).resolve(PrismicConfig.linkResolver, '/'));
      res.redirect(302, redirectUrl);
    }catch(e){
      res.status(500).send(`Error 500 in preview: ${err.message}`);
    }
  }else{
    res.send(400, 'Missing token from querystring');
  }
});

I'll make a note to update the documentation.

Thanks.

philippe1 · October 21, 2020, 12:27pm

Thanks for your answer, from what I understand, I do not need to set the cookie, it is set by the getPreviewResolver method ?

Phil · October 21, 2020, 2:32pm

That's correct, this is handled for you.