I'm a recovering PHP developer and I'm looking at using Django for my
next project - I know how to accomplish the following in PHP (well,
technically it's mostly accomplished in SQL...) but I'd like to know
how difficult it would be to handle this in Django:

I'm trying to create a model for a certain type of physical object -
we'll say, a (theoretical) peg.  I also have a model for a grid of
holes.  A given peg may occupy any hole, but only one at a time.  For
my particular case, I have a pressing need to know what holes a given
peg has occupied, and *when*.  It would also be nice to be able to pull
up a list of available holes, or get a complete peg occupancy history
for a given hole :)

If I was creating a SQL schema by hand, I would create a join table
with something like these columns:
peg_id
hole_id
occupied_start_time
occupied_end_time

And then write all the queries by hand.  I'd like to know the
"cleanest" way to work with Django on this - it's a wonderful
framework, and I'd like the opportunity to learn/switch to Python, but
if I have to reinvent the wheel, I'm a lot more used to doing that
writing a PHP app.  Does anyone have any ideas or sample code I could
look at?

Thanks!


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