ruby - How to test whether two time ranges overlap? -

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i need implement booking functionality , ensure bookings don't overlap in rails app.

the cover? , between? methods aren't quite need. have ensure uniqueness of time range when compared other potential ranges on same model, , efficiently.

i think can done using overlaps?. problem returns true this:

(1..5).overlaps?(5..9) => true

if compared booking ended right when started (3:30 - 4:00 versus 4:00 - 4:30), overlap, technically don't. problem right?

validatesoverlap seems handle issue, including edge overlap.

any suggestions?

def overlap?(x,y)   (x.first - y.end) * (y.first - x.end) > 0 end

will work. problem interval uses >=, can see in "test if 2 date ranges overlap in ruby or rails".


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