CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-4
CaptainCarl
CaptainCarl

Reputation: 3489

validates_presence_of unless other is not empty

My users can choose between using an image url or uploading an image. One of both is required though.

How can I use validates_presence_of :url with an "unless :image is used". And vice versa.

I've managed to get this to work; But obviously this doesn't work. Because it will add the validation if the other one isn't present. I'm confused in to how to get ONLY ONE of both to be entered.

validates_presence_of       :url, if: Proc.new { |a| a.pictogram.blank? }
validates_presence_of       :pictogram, if: Proc.new { |a| a.url.blank? }

EDIT: I fixed it with

validate :addImageValidation

def addImageValidation
    if !url.blank? && !image.blank?
        errors.add(:image, "both not empty")
    end
end

Upvotes: 1

Views: 183

Answers (1)

jimworm
jimworm

Reputation: 2741

You can write your own validator:

validate :url_or_pictogram_but_not_both

def url_or_pictogram_but_not_both
  unless url ^ pictogram
    errors.add ...
  end
end

Upvotes: 1

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