Allow per-post or per-collection date_format values.

[e28eta]

This is an enhancement or feature

Summary

Update _include/page__date.html and _include/page__meta.html to read custom date_format values from the page / document object.

Context

I wanted to add a collection to my site, and use a different date format for them (Month Year, omitting the day), and discovered it wasn't a built-in feature.

I think this is a reasonable approach, and seems in line with the recent addition of locale. My specific use case is using the defaults to avoid repeating it in every YAML front matter block:

defaults:
  - scope:
      path: ""
      type: portfolio
    values:
      layout: single
      show_date: true
      date_format: "%B %Y"

[e28eta]

For what it's worth, I thought this was already a valid way to set the date format. Back in Dec 2024 I added show_dates: true and a custom date_format to the same block in config's defaults, and apparently never noticed that the date format wasn't what I'd asked for. I must have been skimming this section of the docs, and not realized it was supposed to be a top level key

e28eta/e28eta.github.io@6800dd0