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module ActiveRecord
module Associations
class BelongsToPolymorphicAssociation < AssociationProxy #:nodoc:
def replace(record)
if record.nil?
@target = @owner[@reflection.primary_key_name] = @owner[@reflection.options[:foreign_type]] = nil
else
@target = (AssociationProxy === record ? record.target : record)
unless record.new_record?
@owner[@reflection.primary_key_name] = record.id
@owner[@reflection.options[:foreign_type]] = ActiveRecord::Base.send(:class_name_of_active_record_descendant, record.class).to_s
end
@updated = true
end
loaded
record
end
def updated?
@updated
end
private
def find_target
return nil if association_class.nil?
if @reflection.options[:conditions]
association_class.find(
@owner[@reflection.primary_key_name],
:conditions => interpolate_sql(@reflection.options[:conditions]),
:include => @reflection.options[:include]
)
else
association_class.find(@owner[@reflection.primary_key_name], :include => @reflection.options[:include])
end
end
def foreign_key_present
!@owner[@reflection.primary_key_name].nil?
end
def association_class
@owner[@reflection.options[:foreign_type]] ? @owner[@reflection.options[:foreign_type]].constantize : nil
end
end
end
end
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