Get filepath (relative to src) from page?

[writeblankspace]

I have a page called /blog/2024/08/13/some-page.md and I want to programmatically set the default date for this file to 2024-08-13 by parsing its filepath. Is there a way to do this?

[oscarotero]

You can create a preprocessor.

site.preprocess([".md"], (pages) => {
  for (const page of pages) {
    const match = page.data.url.match(/*regular expression */);
    if (match) {
      const [, , year, month, day] = match;
      page.data.date = new Date(year, month - 1, day, 0, 0, 0);
    }
  }
});

[writeblankspace]

oh yeah, I forgot that url is basically the filepath 😅 thank you