ValidatorMultipleUniqueness

Add this line to your application's Gemfile:

gem 'validator_multiple_uniqueness'

And then execute:

$ bundle

Or install it yourself as:

$ gem install validator_multiple_uniqueness

Rails default

validate scope one column

validates :name, uniqueness: true

validate check multiple column arcoss records

validates :name, uniqueness: {scope: [:phone, :address]}

In gem validator_multiple_uniqueness:

validates :name, uniqueness_multiple: {scope: [:alias_name1, :alias_name2]}

check column :name or :alias_name1 or :alias_name2 is unique arcoss multiple column in one record and all records in table

To customize message

#config/locales/ja.yml
ja:
  activerecord:
    errors:
      messages:
        uniqueness_multiple: 'はすでに存在します。'

Bug reports and pull requests are welcome on GitHub at https://github.com/alicuche/validator_multiple_uniqueness. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

The gem is available as open source under the terms of the MIT License.