Redirect with hash or query params

[ssorallen]

I'd like to be able to redirect to the given page with a hash and/or query parameters appended to the page's path. Is that possible or desirable to add?

[danvk]

It would be tremendously useful to be able to redirect based on URL parameters. See this Stack Overflow question.

[parkr]

I think you both might be talking about different things.

[ssorallen]

@parkr Yes I think you are right. I was asking to append a hash or query parameter to the redirect URL. For example:

VISIT http://google.com/outdated-page
REDIRECT_TO http://google.com/new-page?from=outdated-page

or

VISIT http://google.com/oudated-page
REDIRECT_TO http://google.com/new-page#modal

This could be a config option when setting redirect_from in the target page's top matter. The syntax could be extended (and remain backwards compatible) to be something like:

redirect_from:
  - /path/to/howdy.html
  - path: /path/to/old.html
    params:
      - from: old

---

It sounds like @danvk is looking for something like

VISIT http://google.com/oudated-page?q=abc
IF q
  REDIRECT_TO http://google.com/new-page
ELSE
  REDIRECT_TO http://google.com/coolest-page

This doesn't seem possible because the "/oudated-page" path can only resolve to a single file, and the <meta http-equiv="refresh"> tag does not allow conditionals. It would likely require JavaScript to function correctly.

[danvk]

I'd be very happy if I could include something like this in the frontmatter:

redirect_from:
  - /foo?bar=baz
  - /foo?p=2

[ssorallen]

@danvk That's not possible with Jekyll alone because Jekyll is simply a static file generator.

For the path "/foo" there exists one real file, which is likely "/foo/index.html". Inside the HTML file, there is a single <meta http-equiv="refresh" content="0;/new-foo"> tag that your browser reads and follows. There is no possibility of branching, i.e. checking URL parameters.

[miguel76]

It may bit different from both of your needs, but on the same topic. What about passing through hash and query params from the first request to the new URL?