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Contents
# lib/apache_age/validators/unique_node.rb
# Usage:
# validates_with(
# ApacheAge::Validators::UniqueNode,
# attributes: [:first_name, :last_name, :gender]
# )
module ApacheAge
module Validators
class UniqueNode < ActiveModel::Validator
def validate(record)
allowed_keys = record.age_properties.keys
attributes = options[:attributes]
return if attributes.blank?
record_attribs =
attributes
.map { |attr| [attr, record.send(attr)] }
.to_h.symbolize_keys
.slice(*allowed_keys)
query = record.class.find_by(record_attribs)
# if no match is found or if it finds itself, it's valid
return if query.blank? || (query.id == record.id)
record.errors.add(:base, 'record not unique')
attributes.each { record.errors.add(_1, 'property combination not unique') }
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems