/usr/lib/ruby/vendor_ruby/active_record/associations/has_one_association.rb is in ruby-activerecord-3.2 3.2.16-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 | require 'active_support/core_ext/object/inclusion'
module ActiveRecord
# = Active Record Belongs To Has One Association
module Associations
class HasOneAssociation < SingularAssociation #:nodoc:
def replace(record, save = true)
raise_on_type_mismatch(record) if record
load_target
# If target and record are nil, or target is equal to record,
# we don't need to have transaction.
if (target || record) && target != record
transaction_if(save) do
remove_target!(options[:dependent]) if target && !target.destroyed?
if record
set_owner_attributes(record)
set_inverse_instance(record)
if owner.persisted? && save && !record.save
nullify_owner_attributes(record)
set_owner_attributes(target) if target
raise RecordNotSaved, "Failed to save the new associated #{reflection.name}."
end
end
end
end
self.target = record
end
def delete(method = options[:dependent])
if load_target
case method
when :delete
target.delete
when :destroy
target.destroy
when :nullify
target.update_attribute(reflection.foreign_key, nil)
end
end
end
private
# The reason that the save param for replace is false, if for create (not just build),
# is because the setting of the foreign keys is actually handled by the scoping when
# the record is instantiated, and so they are set straight away and do not need to be
# updated within replace.
def set_new_record(record)
replace(record, false)
end
def remove_target!(method)
if method.in?([:delete, :destroy])
target.send(method)
else
nullify_owner_attributes(target)
if target.persisted? && owner.persisted? && !target.save
set_owner_attributes(target)
raise RecordNotSaved, "Failed to remove the existing associated #{reflection.name}. " +
"The record failed to save when after its foreign key was set to nil."
end
end
end
def nullify_owner_attributes(record)
record[reflection.foreign_key] = nil
end
def transaction_if(value)
if value
reflection.klass.transaction { yield }
else
yield
end
end
end
end
end
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