I've found plenty of posts around how to validate a field is present, if another condition is true, such as these:
Rails: How to validate format only if value is present?
Rails - Validation :if one condition is true
However, how do I do it the opposite way around?
My User has an attribute called terms_of_service.
How do I best write a validation that checks that the terms_of_service == true, if present?
You're looking for the acceptance validation.
You can either use it like this:
class Person < ApplicationRecord
validates :terms_of_service, acceptance: true
end
or with further options, like this:
class Person < ApplicationRecord
validates :terms_of_service, acceptance: { message: 'must be abided' }
end
[edit]
You can set the options you expect the field to be as well, as a single item or an array. So if you store the field inside a hidden attribute, you can check that it is still "accepted" however you describe accepted:
class Person < ApplicationRecord
validates :terms_of_service, acceptance: { accept: ['yes', 'TRUE'] }
end
I can't think of any default validation methods that could serve your purpose, but you can do with a custom validation. Also, a boolean can be either truthy or falsy, so you just need to check if its true or not. something like this should work.
validate :terms_of_service_value
def terms_of_service_value
if terms_of_service != true
errors.add(:terms_of_service, "Should be selected/True")
end
end
terms_of_service?boolean?trueor to validate that it should betrue?