Rails model.valid? flushing custom errors and falsely returning true
If you want to force your model to show the errors you could do something as dirty as this:
your_object = YourModel.new
your_object.add(:your_field, "your message")
your_object.define_singleton_method(:valid?) { false }
# later on...
your_object.valid?
# => false
your_object.errors
# => {:your_field =>["your message"]}
The define_singleton_method
method can override the .valid?
behaviour.
In ActiveModel, valid?
is defined as following:
def valid?(context = nil)
current_context, self.validation_context = validation_context, context
errors.clear
run_validations!
ensure
self.validation_context = current_context
end
So existing errors are cleared is expected. You have to put all your custom validations into some validate
callbacks. Like this:
validate :check_status
def check_status
errors.add(:status, "must be YES or NO") unless ['YES', 'NO'].include?(status)
end