Platform that can be passed from below?

[kalium]

I've been doing a 2D tile-based platformer game, and I've stumbled across a doubt.

Is there any way of creating a platform (with love.physics) that can be jumped from below, but collides normally from the top?

[Boolsheet]

There should be various ways to implement this. The Box2D manual says it could be done in the pre-solve event where you disable the contact if it's coming from below. I guess a custom collision filter would do it too.