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module ActiveRecord
# = Active Record Belongs To Polymorphic Association
module Associations
class BelongsToPolymorphicAssociation < BelongsToAssociation #:nodoc:
private
def replace_keys(record)
super
@owner[@reflection.foreign_type] = record && record.class.base_class.name
end
def different_target?(record)
super || record.class != target_klass
end
def inverse_reflection_for(record)
@reflection.polymorphic_inverse_of(record.class)
end
def target_klass
type = @owner[@reflection.foreign_type]
type && type.constantize
end
def raise_on_type_mismatch(record)
# A polymorphic association cannot have a type mismatch, by definition
end
def stale_state
[super, @owner[@reflection.foreign_type].to_s]
end
end
end
end
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