add method to sales log and use in depends on to increase readability

app/models/form/sales/pages/mortgage_amount.rb

@@ -3,9 +3,7 @@ class Form::Sales::Pages::MortgageAmount < ::Form::Page
     super(id, hsh, subsection)
     @ownershipsch = ownershipsch
     @header = "Mortgage Amount"
-    @depends_on = [{
+    @depends_on = [{ "mortgage_used?" => true }]
-      "mortgageused" => 1,
-    }]
   end
 
   def questions

app/models/sales_log.rb

@@ -229,6 +229,10 @@ class SalesLog < Log
     ownershipsch == 2
   end
 
+  def mortgage_used?
+    mortgageused == 1
+  end
+
   def mortgage_not_used?
     mortgageused == 2
   end

spec/models/form/sales/pages/mortgage_amount_spec.rb

@@ -28,8 +28,6 @@ RSpec.describe Form::Sales::Pages::MortgageAmount, type: :model do
   end
 
   it "has correct depends_on" do
-    expect(page.depends_on).to eq([{
+    expect(page.depends_on).to eq([{ "mortgage_used?" => true }])
-      "mortgageused" => 1,
-    }])
   end
 end