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coupon_uses
2006 Jul 11
1
counter_cache, has_many and belongs_to
I am a bit confused about counter_cache here. The API docs
http://api.rubyonrails.org/classes/ActiveRecord/Associations/ClassMethods.html
say that only the belongs_to association can take the :counter_cache
option. When I try to use it on a has_many I get an "unknown key(s):
counter_cache" error.
Why would this be the case? belongs_to means that this model has a
field with an id