ArrayValidator

ActiveModel Validations for array attributes (e.g. Postgres JSONB).

Validate the content of the array is a subset of a predefined list:

class Plant < ActiveRecord::Base
  validates :categories, array: { subset_of: ['trees', 'flowers'] }
end

Don't allow duplicates:

class Plant < ActiveRecord::Base
  validates :categories, array: { subset_of: ['trees', 'flowers'], duplicates: false }
end

Validate each element matches a format:

class Plant < ActiveRecord::Base
  HH_MM_REGEX = /(0[0-9]|1[0-9]|2[0-3]):[0-5][0-9]/
  validates :watering_times, array: { format: HH_MM_REGEX }
end

Validate the elements are ordered:

class Plant < ActiveRecord::Base
  validates :intake_times, array: { order: :asc }
  validates :quantities, array: { order: :desc }
end

Add this line to your application's Gemfile:

gem 'array_validator'

And then execute:

$ bundle

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in the gemspec, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/infinum/array_validator.

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