ActiveStorage File Attachment Validation

Question

Is there a way to validate attachments with ActiveStorage? For example, if I want to validate the content type or the file size?

Something like Paperclip\'s approach wou

Answer 1

You can use awesome https://github.com/musaffa/file_validators gem

class Profile < ActiveRecord::Base
  has_one_attached :avatar
  validates :avatar, file_size: { less_than_or_equal_to: 100.kilobytes },
    file_content_type: { allow: ['image/jpeg', 'image/png'] }
end

I'm using it with form object so I'm not 100% sure it is working directly with AR but it should...