What is the best way to track order in a model? For example, maybe the user
can reorder items in a todo list.
I've thought of including a field called "order" or something, but then I'd
have to update every single one when I change the order. I've also thought
of specifying the "order" as a number in the thousands, and just halve the
difference whenever something is inserted between something else.

I could try to create some kind of linked-list in the database (so, specify
"nextItem" and then update them accordingly), but that's kind of hacky.

One other idea is to have a separate model that tracks the order somehow.

Any ideas?

Thanks!
~sean

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