Complex menus for Jekyll.

You can create _data/menu.yml, _data/menus.yml, or both, or add menu items via your front-matter. Both are merged into the same menus so you can even split off menus between the two, so that you can have menus that have internal and external links! Just make sure the identifiers match.

---
menus: main
---

The above configuration will infer all data (url, title, identifier, weight) from your page data, the default weight is "-1" and the identifier is made from the pages slug, which Jekyll itself generates. It will also place the page on the "main" menu on your behalf after inferring said data.

---
menus:
  - header
  - footer
---

The above configuration will infer all data (url, title, identifier, weight) from your page data, the default weight is "-1" and the identifier is made from the pages slug, which Jekyll itself generates. It will also place the page on the "header", and "footer" menus after inferring said data.

---
menus:
  main:
    url: "/custom-url"
---

The above will place a menu on "main" and override the URL for you inferring the rest of the data on your behalf. You can add multiple keys with hashes if you wish to place the item on multiple menus, and you can override as much as you wish at that time. Data is not inferred between items, so if you override in one you must override in all, or the default values will be used.

All data within menu(s).yml must provide url, title, identifier, and weight (actually weight is optional)

Menu items within data files must follow a key array format, or a key hash format, we do not accept string formats because we do not infer data, it's impossible to infer such data efficiently and the data files are mostly built for you to add external links or links to other parts of your site that are considered sub-domains. Examples:

main:
  - title: Title
    identifier: title
    url: url

main:
  title: Title
  identifier: title
  url: url

It should be noted that _data/menu.yml and _data/menus.yml are both read and merged, so you can have one, or both... we won't judge you if you happen to use both of these files at once, it's your choice!

You can add any amount of custom data you wish to an item, we do not remove data, and we do not block it, we will pass any data you wish to put into the into the menu item. It is up to you what data you put there, we only check that our own keys exist, and if they don't then we fail in certain scenarios.