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Contents
# encoding: utf-8
module Mongoid
module Association
module Referenced
class HasOne
# The Builder behavior for has_one associations.
#
# @since 7.0
module Buildable
# This method either takes an _id or an object and queries for the
# inverse side using the id or sets the object after clearing the
# associated object.
#
# @return [ Document ] A single document.
def build(base, object, type = nil)
if query?(object)
if !base.new_record?
execute_query(object, base)
end
else
clear_associated(object)
object
end
end
private
def clear_associated(object)
if object && (associated = object.send(inverse))
associated.substitute(nil)
end
end
def query_criteria(object, base)
crit = klass.where(foreign_key => object)
with_polymorphic_criterion(crit, base)
end
def execute_query(object, base)
query_criteria(object, base).limit(-1).first(id_sort: :none)
end
def with_polymorphic_criterion(criteria, base)
if polymorphic?
criteria.where(type => base.class.name)
else
criteria
end
end
def query?(object)
object && !object.is_a?(Mongoid::Document)
end
end
end
end
end
end
Version data entries
14 entries across 14 versions & 1 rubygems