make question answers required

app/models/medical_release.rb

@@ -32,6 +32,7 @@ class MedicalRelease < ApplicationRecord
   # These validations apply to all releases
   validates :person_first_name, :person_last_name, presence: true
   validates :person_email, email: true, allow_blank: true
+  validate :valid_answers
 
   acts_as_taggable_on :internal_tags, :tags
 
@@ -76,4 +77,15 @@ class MedicalRelease < ApplicationRecord
   def contract_file_name
     "#{project.name.parameterize}_#{contract_template.release_type}_#{(signed_at || created_at).strftime("%Y.%m.%d")}_#{release_number}_#{filename_suffix.parameterize}"
   end
+
+  private
+
+  def valid_answers
+    (1..ContractTemplate::NUMBER_OF_CUSTOM_FIELDS).each do |index|
+      if contract_template["question_#{index}_text"].present? &&
+         public_send("question_#{index}_answer").blank?
+        errors.add("question_#{index}", I18n.t('medical_releases.custom_validation_errors.question_answer_is_required'))
+      end
+    end
+  end
 end