Abt select_tag and observer_field

[luislavena]

Hi ,i am new to rails so i want to learn — select state according
to the country and select city acc to state using observe field ,can u
give some websites to learn select_tag and observe field topic.
Thanks in Advance

[selva_raj]

try this

http://badpopcorn.com/blog/2008/09/11/rails-observer-field/