Rails: how do I validate that something is a boolean?
Since Rails 3, you can do:
validates :field, inclusion: { in: [ true, false ] }
I believe for a boolean field you will need to do something like:
validates_inclusion_of :field_name, :in => [true, false]From an older version of the API: "This is due to the way Object#blank? handles boolean values. false.blank? # => true"
I'm not sure if this will still be fine for Rails 3 though, hope that helped!
When I apply this, I get:
Warning from shoulda-matchers:
You are using validate_inclusion_of to assert that a boolean columnallows boolean values and disallows non-boolean ones. Be aware that itis not possible to fully test this, as boolean columns willautomatically convert non-boolean values to boolean ones. Hence, youshould consider removing this test.