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# frozen_string_literal: true
module ActiveRecord
module Validations
class PresenceValidator < ActiveModel::Validations::PresenceValidator # :nodoc:
def validate_each(record, attribute, association_or_value)
if record.class._reflect_on_association(attribute)
association_or_value = Array.wrap(association_or_value).reject(&:marked_for_destruction?)
end
super
end
end
module ClassMethods
# Validates that the specified attributes are not blank (as defined by
# Object#blank?). If the attribute is an association, the associated object
# is also considered blank if it is marked for destruction.
#
# class Person < ActiveRecord::Base
# has_one :face
# validates_presence_of :face
# end
#
# The face attribute must be in the object and it cannot be blank or marked
# for destruction.
#
# This validator defers to the Active Model validation for presence, adding the
# check to see that an associated object is not marked for destruction. This
# prevents the parent object from validating successfully and saving, which then
# deletes the associated object, thus putting the parent object into an invalid
# state.
#
# See ActiveModel::Validations::HelperMethods.validates_presence_of for
# more information.
#
# NOTE: This validation will not fail while using it with an association
# if the latter was assigned but not valid. If you want to ensure that
# it is both present and valid, you also need to use
# {validates_associated}[rdoc-ref:Validations::ClassMethods#validates_associated].
def validates_presence_of(*attr_names)
validates_with PresenceValidator, _merge_attributes(attr_names)
end
end
end
end
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