add joint purchase question

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

@@ -0,0 +1,17 @@
+class Form::Sales::Pages::JointPurchase < ::Form::Page
+    def initialize(id, hsh, subsection)
+      super
+      @id = "joint_purchase"
+      @header = ""
+      @description = ""
+      @subsection = subsection
+      }]
+    end
+  
+    def questions
+      @questions ||= [
+        Form::Sales::Questions::JointPurchase.new(nil, nil, self),
+      ]
+    end
+  end
+  

app/models/form/sales/questions/joint_purchase.rb

@@ -0,0 +1,18 @@
+class Form::Sales::Questions::JointPurchase < ::Form::Question
+    def initialize(id, hsh, page)
+      super
+      @id = "type"
+      @check_answer_label = "Joint purchase"
+      @header = "Is this a joint purchase?"
+      @hint_text = ""
+      @type = "radio"
+      @answer_options = ANSWER_OPTIONS
+      @page = page
+    end
+  
+    ANSWER_OPTIONS = {
+        "1" => { "value" => "Yes" },
+        "0" => { "value" => "No" },
+      }.freeze
+  end
+  

app/models/form/sales/setup/pages/created_by.rb

@@ -0,0 +1,15 @@
+class Form::Setup::Pages::CreatedBy < ::Form::Page
+  def initialize(id, hsh, subsection)
+    super
+    @id = "created_by"
+    @header = ""
+    @description = ""
+    @subsection = subsection
+  end
+
+  def questions
+    @questions ||= [
+      Form::Setup::Questions::CreatedById.new(nil, nil, self),
+    ]
+  end
+end

app/models/form/sales/subsections/setup.rb

@@ -13,6 +13,7 @@ class Form::Sales::Subsections::Setup < ::Form::Subsection
       Form::Sales::Pages::SaleDate.new(nil, nil, self),
       Form::Sales::Pages::PurchaserCode.new(nil, nil, self),
       Form::Sales::Pages::SharedOwnershipType.new(nil, nil, self),
+      Form::Sales::Pages::JointPurchase.new(nil, nil, self),
     ]
   end
 end