We have a multi-tenant application where validation differs for each account. We could easily achieve this for presence validation like the below,
module CommonValidator
def add_custom_validation
required_fields = get_required_fields
return if required_fields.blank?
validates_presence_of required_fields.map(&:to_sym)
end
end
class ApplicationRecord < ActiveRecord::Base
include Discard::Model
include CommonValidator
end
Then we have to add uniqueness validation based on account, so tried like the same. but getting undefined method error. Is there any way that I could get this work?
module CommonValidator
def add_custom_validation
unique_fields = ['first_name']
validates_uniqueness_of unique_fields.map(&:to_sym) if unique_fields.present?
end
end
validates_uniqueness_of
is actually a class method (defined in ActiveRecord::Validations::ClassMethods
), hence you are not able to call it from the context of the object.
Whereas validates_presence_of
is both a helper method, and a class method (defined in ActiveModel::Validations::HelperMethods
and ActiveRecord::Validations::ClassMethods
).
If you want to use the uniqueness validator, you can define the add_custom_validation
as a class method as well and then you should be able to use it. Something like,
require 'active_support/concern'
module CommonValidator
extend ActiveSupport::Concern
included do
add_custom_validation
end
class_methods do
def add_custom_validation
required_fields = get_required_fields # This will also need to be a class method now
return if required_fields.blank?
validates_uniqueness_of required_fields.map(&:to_sym)
end
end
end
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.