Have you ever seen those forms where you select a country, then it populates a list of states, then you pick a state and it populate a list of cities? I’ve seem many of these and I really like them. In one of my past projects I was asked to add a similar form to the system, using symfony, and I’ll show how I accomplished this, making use of the excellent new symfony 1.1 form system. For those who want to see what it looks like before keep on reading, I put very simple sample online in this link.

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