Finding the position on an item in a collection

Here is my 2cents worth, but I would love to learn a better way.

the_collection = User.find(:all)


This feels like it should be easy but i can’t work it out: if i have a
collection of stories, ordered by (for example) date, then how do i find
out the position of the story with id = (eg) 23 in the collection?

I guess this is a ruby question rather than a rails-specific question,
but maybe there’s a rails way…

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