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Contents
# encoding: utf-8
module Mongoid #:nodoc:
module Validations #:nodoc:
# Validates whether or not an association is valid or not. Will correctly
# handle has one and has many associations. Will *not* load associations if
# they aren't already in memory.
#
# @example Set up the association validations.
#
# class Person
# include Mongoid::Document
# references_many :posts, :validate => true
# end
class ReferencedValidator < ActiveModel::EachValidator
# Validate the document for the initialized attributes. Will not load
# any association that's not currently loaded.
#
# @param [ Document ] document The document to validate.
def validate(document)
attributes.each do |attribute|
value = document.instance_variable_get("@#{attribute}".to_sym)
validate_each(document, attribute, value)
end
end
# Validates that the already loaded associations provided are either all
# nil or unchanged or all valid. If neither is true then the appropriate
# errors will be added to the parent document.
#
# @example Validate the loaded association.
# validator.validate_each(document, :name, name)
#
# @param [ Document ] document The document to validate.
# @param [ Symbol ] attribute The relation to validate.
# @param [ Object ] value The value of the relation.
def validate_each(document, attribute, value)
document.validated = true
valid =
if !value || !value.target
true
else
Array.wrap(value).collect do |doc|
if doc.nil? || (!doc.changed? && !doc.new_record?)
true
else
doc.validated? ? true : doc.valid?
end
end.all?
end
document.validated = false
return if valid
document.errors.add(attribute, :invalid, options.merge(:value => value))
end
end
end
end
Version data entries
5 entries across 5 versions & 2 rubygems