Sort albums by 'Date'

[jrstarke]

I really like this project, and I think there are only a few small things to get it to a point I love it.

One of the things I'd like to be able to do is order my albums by reverse chronological (most recent at the top) so that when a user comes to my page, they see my most recent photos first.

I can think of two ways of achieving this, but I'd like to get your thoughts.

1. Add a Date property to the index.md file in the album, and add a configuration flag to sort by date to the config. When sorting the albums, if the date flag is set, order by this date, or alphabetic if none is available.
2. For each album, get the most recent exif from the medias, and then sort the albums based on their most recent media.

For complexity reasons, I'm more inclined to 1, but I figured it might be good to get some feedback before attempting to build something.

[jrstarke]

I noticed looking back through the old pull requests that it sounds like this isn't a new idea (see #2), is this something that was already completed?

[saimn]

Hi @jrstarke ,
The feature that is already implemented is the sort by date of images, inside an album, but not the sort of albums. The 2nd solution would be the best, and it should not be very hard to do. It could be done in a similar way to what is done for images (https://github.com/saimn/sigal/blob/master/sigal/gallery.py#L296).

[j0nes2k]

@jrstarke , +1 for the idea! While for general usage I prefer your second solution, I really see a use case for the first idea, too. Here is my use case at the moment: I use folders sorted by month (like: 2014-10, 2014-09 and so on) and generate a complete gallery from these albums. Then I (manually) create an index.md file inside these folders to translate the album title to a more readable format (like: October 2014, September 2014...). When using a Date property, this could get a standard way to offer localized folder names.

[ghost]

Hello guys. First, thank you about all effort in this project. It's amazing. Now, about this issue, I manage organize albums by date with a simple command in crontab:
cd /xx && exiftool '-Directory<DateTimeOriginal' -d %Y/%m/%d *

[saimn]

Fixed with #192