class TemplateInvocationInputValue < ActiveRecord::Base belongs_to :template_invocation belongs_to :template_input validates :value, :presence => true, :if => proc { |v| v.template_input.required? || v.value.nil? } validates :value, :inclusion => { :in => proc { |v| v.template_input.options_array } }, :if => proc { |v| v.template_input.input_type == 'user' && v.template_input.options_array.present? } end