fair-rose
fair-rose•2y ago

Is it possible to get the selector of the individual links when using enqueueLinks()?

await enqueueLinks({
  selector: 'a',
  strategy: 'same-hostname',
  forefront: true,
  transformRequestFunction: (request) => {
    request.userData.parentUrl = page.url();
    request.userData.subRequest = true;
    request.userData.linkSelector = xxx; // <-- Is it possible to save the selectors of each link?

    return request;
  },
});
await enqueueLinks({
  selector: 'a',
  strategy: 'same-hostname',
  forefront: true,
  transformRequestFunction: (request) => {
    request.userData.parentUrl = page.url();
    request.userData.subRequest = true;
    request.userData.linkSelector = xxx; // <-- Is it possible to save the selectors of each link?

    return request;
  },
});
4 Replies
ambitious-aqua
ambitious-aqua•2y ago
Hello @Juneberry, this is not possible using enqueueLinks. You can achieve this by parsing the page (eg. by using cheerio) and creating requests manually.
fair-rose
fair-roseOP•2y ago
@vojtechmaslan thank you. How would I pass the links manually? Would I still use enqueueLinks?
ambitious-aqua
ambitious-aqua•2y ago
You can do something like this: 
const requests = $('a').map((_, el) => {
    // not sure what you want to have under linkSelector, these are just classes
    const $el = $(el);
    const linkSelector = $el.attr('class')?.split(' ').map((c) => `.${c}`).join('') ?? '';
    return {
        url: $el.attr('href'),
        userData: { linkSelector }
    };
}).toArray();
await crawler.addRequests(requests);
const requests = $('a').map((_, el) => {
    // not sure what you want to have under linkSelector, these are just classes
    const $el = $(el);
    const linkSelector = $el.attr('class')?.split(' ').map((c) => `.${c}`).join('') ?? '';
    return {
        url: $el.attr('href'),
        userData: { linkSelector }
    };
}).toArray();
await crawler.addRequests(requests);
fair-rose
fair-roseOP•2y ago
Awesome, thank you!

Did you find this page helpful?