Hi,
I have an unusual use-case where I need to override a has_many
accessor to return an array of results depending on some the value of
a class variable. I've tried several solutions, the closest to success
using the extension option:
[code]
has_many :meta_associations, :as => :meta_extendable do
# Find any meta_associations that are joined to this
activerecord instance
def meta_associations(*args)
options = args.extract_options!
if proxy_owner.class.applicable_type ==
proxy_owner.class.name
options[:conditions] ||= { :meta_extendable_id =>
proxy_owner.id,
:meta_extendable_type =>
proxy_owner.class.applicable_type }
else
options[:conditions] ||= { :meta_extendable_id =>
proxy_owner.send
(proxy_owner.class.applicable_type_foreign_key.to_sym),
:meta_extendable_type =>
proxy_owner.class.applicable_type }
end
MetaAssociation.find(args.first, options)
end
end
[/code]
However, this just gives me an
instance.meta_associations.meta_associations method, rather than
overriding the default instance.meta_associations. Is this possible,
or should I forget using :has_many and manually write all the
collection accessors/mutators?
Thanks,
Chris
--
www.chrisblunt.com
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