refactor with extract method

spec/support/bulk_upload/log_to_csv.rb

@@ -157,12 +157,7 @@ class BulkUpload::LogToCsv
   end
 
   def renewal
-    case log.renewal
+    checkbox_value(log.renewal)
-    when 1
-      1
-    when 0
-      2
-    end
   end
 
   def london_affordable_rent
@@ -208,12 +203,7 @@ class BulkUpload::LogToCsv
   end
 
   def previous_postcode_known
-    case log.ppcodenk
+    checkbox_value(log.ppcodenk)
-    when 1
-      1
-    when 0
-      2
-    end
   end
 
   def homeless
@@ -226,25 +216,19 @@ class BulkUpload::LogToCsv
   end
 
   def cbl
-    case log.cbl
+    checkbox_value(log.cbl)
-    when 0
-      2
-    when 1
-      1
-    end
   end
 
   def chr
-    case log.chr
+    checkbox_value(log.chr)
-    when 0
-      2
-    when 1
-      1
-    end
   end
 
   def cap
-    case log.cap
+    checkbox_value(log.cap)
+  end
+
+  def checkbox_value(field)
+    case field
     when 0
       2
     when 1