Created validation for when urgency and custom both true

app/models/event_procedure.rb

@@ -31,4 +31,6 @@ class EventProcedure < ApplicationRecord
   validates :room_type, presence: true, if: -> { health_insurance? }
   validates :urgency, inclusion: [true, false], if: -> { health_insurance? }
   validates :payment, presence: true
+
+  validates_with CustomAndUrgencyValidator
 end

app/validations/custom_and_urgency_validator.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class CustomAndUrgencyValidator < ActiveModel::Validator
+  def validate(record)
+    return unless record.procedure&.custom && record.urgency
+
+    record.errors.add(:base, "EventProcedure cannot have both custom and urgency as true")
+  end
+end

spec/models/event_procedure_spec.rb

@@ -50,10 +50,16 @@
   end
 
   describe "validations" do
+    let(:event) { build(:event_procedure, urgency: true, procedure_attributes: { custom: true }) }
+
     it { is_expected.to validate_presence_of(:date) }
     it { is_expected.to validate_presence_of(:patient_service_number) }
     it { is_expected.to validate_presence_of(:room_type) }
     it { is_expected.to validate_presence_of(:payment) }
+
+    it "is invalid when custom and urgency are both true" do
+      expect(event).not_to be_valid
+    end
   end
 
   describe ".enumerations" do