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Contents
# encoding: utf-8
module Mongoid
module Validatable
# Validates whether or not a field is unique against the documents in the
# database.
#
# @example Define the uniqueness validator.
#
# class Person
# include Mongoid::Document
# field :title
#
# validates_uniqueness_of :title
# end
class UniquenessValidator < ActiveModel::EachValidator
# Scope the criteria to the scope options provided.
#
# @api private
#
# @example Scope the criteria.
# validator.scope(criteria, document)
#
# @param [ Criteria ] criteria The criteria to scope.
# @param [ Document ] document The document being validated.
#
# @return [ Criteria ] The scoped criteria.
#
# @since 2.3.0
def scope(criteria, document, attribute)
Array.wrap(options[:scope]).each do |item|
name = document.database_field_name(item)
criteria = criteria.where(item => document.attributes[name])
end
criteria = criteria.where(deleted_at: nil) if document.paranoid?
criteria
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems