Array::include? on ActiveRecord collection not calling op== ?
- by tribalvibes
Given a collection of named Foos from ActiveRecord, why does Array.include? not seem to call Foo.== but yet index does?
class Foo < ActiveRecord::Base
def ==(s)
self.name == s
end
end
class Bar < ActiveRecord::Base
has_many :foos
end
bar.foos << Foo.new( :name = 'hmm' )
bar.foos.all.include?('hmm') # does select all from db every time
= true
bar.foos.include?('hmm') # does not go to db, but does not find the Foo!
= false
bar.foos.index('hmm') # does not go to db, but does find the Foo[0] !
= 0
bar.foos.index('eh') # no such object
= nil
I understand shallow about the proxies, but (without a detour into the AR source) why is index seemingly behaving correctly but include? is not !?
Is this a bug in the proxy behavior, and/or is this behavior documented somewhere ?
Thanks.
