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sudden
2008 Apr 10
3
option_groups_from_collection_for_select with a ActiveRecord::Base single object
Rails documentation gives examples of using
option_groups_from_collection_for_select with two tables/objects.
How could it be done with one?
Example that almost works:
I have a form to enter address from both the United States and Canada.
It has the following:
====new.html.erb====
<%= select_tag(
:state,
option_groups_from_collection_for_select(
State.countries,
:country,