ActiveStorage Validator

ActiveStorage blob validator.

Add this line to your application's Gemfile:

gem 'activestorage-validator'

And then execute:

$ bundle

Or install it yourself as:

$ gem install activestorage-validator

class User < ApplicationRecord
  has_one_attached :avatar
  has_many_attached :photos

  validates :avatar, presence: true, blob: { content_type: :web_image } # supported options: :web_image, :image, :audio, :video, :text
  validates :photos, presence: true, blob: { content_type: ['image/png', 'image/jpg', 'image/jpeg'], size_range: 1..(5.megabytes) }
  # validates :photos, presence: true, blob: { content_type: %r{^image/}, size_range: 1..(5.megabytes) }
end

Note: For has_many_attached, size is validated on each file individually. In the code above, :photos validation allows any number of photos to be upload, each one being 5 MB or less in size.

Bug reports and pull requests are welcome on GitHub at https://github.com/aki77/activestorage-validator. 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.