feat: start adding scheme validation for when owning org doesn't hold stock

app/models/scheme.rb

@@ -21,7 +21,7 @@ class Scheme < ApplicationRecord
   scope :order_by_completion, -> { order("confirmed ASC NULLS FIRST") }
   scope :order_by_service_name, -> { order(service_name: :asc) }
 
-  validate :validate_confirmed
+  validate :validate_confirmed, :validate_owning_organisation
 
   auto_strip_attributes :service_name
 
@@ -212,6 +212,13 @@ class Scheme < ApplicationRecord
     end
   end
 
+  def validate_owning_organisation
+    if !owning_organisation.holds_own_stock?
+      errors.add(:owning_organisation_id, :does_not_own_stock, message: I18n.t("validations.scheme.owning_organisation.does_not_own_stock"))
+      owning_organisation = nil
+    end
+  end
+
   def available_from
     FormHandler.instance.collection_start_date(created_at)
   end

config/locales/en.yml

@@ -341,6 +341,8 @@ en:
         before_deactivation: "This scheme was deactivated on %{date}. The reactivation date must be on or after deactivation date"
       deactivation:
         during_deactivated_period: "The scheme is already deactivated during this date, please enter a different date"
+      owning_organisation:
+        does_not_own_stock: "Enter an organisation that owns housing stock"