move set housing needs fields to case log variables file

app/models/case_log.rb

@@ -25,7 +25,6 @@ class CaseLog < ApplicationRecord
   before_validation :reset_scheme_location!, if: :scheme_changed?, unless: :location_changed?
   before_validation :process_postcode_changes!, if: :postcode_full_changed?
   before_validation :process_previous_postcode_changes!, if: :ppostcode_full_changed?
-  before_validation :set_housingneeds_fields, if: :housingneeds?
   before_validation :reset_invalidated_dependent_fields!
   before_validation :reset_location_fields!, unless: :postcode_known?
   before_validation :reset_previous_location_fields!, unless: :previous_postcode_known?
@@ -759,25 +758,4 @@ private
   def unknown_housingneeds?
     housingneeds == 3
   end
-
-  def set_housingneeds_fields
-    set_housingneeds_values_to_zero
-
-    self.housingneeds_a = 1 if fully_wheelchair_accessible?
-    self.housingneeds_b = 1 if essential_wheelchair_access?
-    self.housingneeds_c = 1 if level_access_housing?
-    self.housingneeds_f = 1 if other_housingneeds?
-    set_housingneeds_values_to_zero unless has_housingneeds?
-    self.housingneeds_g = 1 if no_housingneeds?
-    self.housingneeds_h = 1 if unknown_housingneeds?
-  end
-
-  def set_housingneeds_values_to_zero
-    self.housingneeds_a = 0
-    self.housingneeds_b = 0
-    self.housingneeds_c = 0
-    self.housingneeds_f = 0
-    self.housingneeds_g = 0
-    self.housingneeds_h = 0
-  end
 end

app/models/derived_variables/case_log_variables.rb

@@ -69,6 +69,8 @@ module DerivedVariables::CaseLogVariables
         self.voiddate = startdate
       end
     end
+
+    set_housingneeds_fields if housingneeds?
   end
 
 private
@@ -185,4 +187,25 @@ private
       self.location = scheme.locations.first
     end
   end
+
+  def set_housingneeds_fields
+    set_housingneeds_values_to_zero
+
+    self.housingneeds_a = 1 if fully_wheelchair_accessible?
+    self.housingneeds_b = 1 if essential_wheelchair_access?
+    self.housingneeds_c = 1 if level_access_housing?
+    self.housingneeds_f = 1 if other_housingneeds?
+    set_housingneeds_values_to_zero unless has_housingneeds?
+    self.housingneeds_g = 1 if no_housingneeds?
+    self.housingneeds_h = 1 if unknown_housingneeds?
+  end
+
+  def set_housingneeds_values_to_zero
+    self.housingneeds_a = 0
+    self.housingneeds_b = 0
+    self.housingneeds_c = 0
+    self.housingneeds_f = 0
+    self.housingneeds_g = 0
+    self.housingneeds_h = 0
+  end
 end

spec/fixtures/complete_case_log.json

@@ -59,6 +59,7 @@
     "housingneeds": 1,
     "housingneeds_type": 2,
     "housingneeds_other": 0,
+    "housingneeds_c": 1,
     "illness_type_1":null,
     "illness_type_2":null,
     "illness_type_3":null,