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tag: v2.1.0
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executable file 59 lines (48 sloc) 1.809 kb
module ActiveRecord
module Associations
class BelongsToAssociation < AssociationProxy #:nodoc:
def create(attributes = {})
replace(@reflection.klass.create(attributes))
end
def build(attributes = {})
replace(@reflection.klass.new(attributes))
end
def replace(record)
counter_cache_name = @reflection.counter_cache_column
if record.nil?
if counter_cache_name && !@owner.new_record?
@reflection.klass.decrement_counter(counter_cache_name, @owner[@reflection.primary_key_name]) if @owner[@reflection.primary_key_name]
end
@target = @owner[@reflection.primary_key_name] = nil
else
raise_on_type_mismatch(record)
if counter_cache_name && !@owner.new_record?
@reflection.klass.increment_counter(counter_cache_name, record.id)
@reflection.klass.decrement_counter(counter_cache_name, @owner[@reflection.primary_key_name]) if @owner[@reflection.primary_key_name]
end
@target = (AssociationProxy === record ? record.target : record)
@owner[@reflection.primary_key_name] = record.id unless record.new_record?
@updated = true
end
loaded
record
end
def updated?
@updated
end
private
def find_target
@reflection.klass.find(
@owner[@reflection.primary_key_name],
:select => @reflection.options[:select],
:conditions => conditions,
:include => @reflection.options[:include],
:readonly => @reflection.options[:readonly]
)
end
def foreign_key_present
!@owner[@reflection.primary_key_name].nil?
end
end
end
end
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