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Contents
module AssignableValues
module ActiveRecord
module Restriction
class BelongsToAssociation < Base
def initialize(*)
super
if @options[:multiple]
raise "Option :multiple is not allowed for restricting belongs_to associations."
end
end
private
def association_class
model.reflect_on_association(property).klass
end
def association_id_method
association = model.reflect_on_association(property)
if association.respond_to?(:foreign_key)
association.foreign_key # Rails >= 3.1
else
association.primary_key_name # Rails 2 + 3.0
end
end
def error_property
association_id_method
end
def association_id(record)
record.send(association_id_method)
end
def has_previously_saved_value?(record)
if record.respond_to?(:attribute_in_database)
!record.new_record? # Rails >= 5.1
else
!record.new_record? && record.respond_to?(association_id_was_method) # Rails <= 5.0
end
end
def previously_saved_value(record)
if old_id = association_id_was(record)
if old_id == association_id(record)
current_value(record) # no need to query the database if nothing changed
else
association_class.find_by_id(old_id)
end
end
end
def current_value(record)
record.send(property)
end
def association_id_was(record)
if record.respond_to?(:attribute_in_database)
record.attribute_in_database(:"#{association_id_method}").presence # Rails >= 5.1
else
record.send(association_id_was_method).presence # Rails <= 5.0
end
end
def association_id_was_method
:"#{association_id_method}_was"
end
end
end
end
end
Version data entries
17 entries across 17 versions & 1 rubygems