chore(conditional): update champs to use in_region operators

app/models/champs/commune_champ.rb

@@ -1,5 +1,5 @@
 class Champs::CommuneChamp < Champs::TextChamp
-  store_accessor :value_json, :code_departement, :code_postal
+  store_accessor :value_json, :code_departement, :code_postal, :code_region
   before_save :on_codes_change, if: :should_refresh_after_code_change?
 
   def for_export
@@ -82,6 +82,7 @@ class Champs::CommuneChamp < Champs::TextChamp
 
     if commune.present?
       self.code_departement = commune[:departement_code]
+      self.code_region = commune[:region_code]
       self.value = commune[:name]
     else
       self.code_departement = nil

app/models/champs/departement_champ.rb

@@ -1,4 +1,5 @@
 class Champs::DepartementChamp < Champs::TextChamp
+  store_accessor :value_json,  :code_region
   validate :value_in_departement_names, unless: -> { value.nil? }
   validate :external_id_in_departement_codes, unless: -> { external_id.nil? }
 
@@ -39,6 +40,10 @@ class Champs::DepartementChamp < Champs::TextChamp
     end
   end
 
+  def code_region(departement_name)
+    APIGeoService.region_code_by_departement(name)
+  end
+
   def value=(code)
     if [2, 3].include?(code&.size)
       self.external_id = code

app/models/champs/epci_champ.rb

@@ -1,5 +1,5 @@
 class Champs::EpciChamp < Champs::TextChamp
-  store_accessor :value_json, :code_departement
+  store_accessor :value_json, :code_departement, :code_region
   before_validation :on_departement_change
 
   validate :code_departement_in_departement_codes, unless: -> { code_departement.nil? }
@@ -42,6 +42,10 @@ class Champs::EpciChamp < Champs::TextChamp
     external_id
   end
 
+  def code_region
+    APIGeoService.region_code_by_departement(departement_name)
+  end
+
   def selected
     code
   end
@@ -74,6 +78,7 @@ class Champs::EpciChamp < Champs::TextChamp
     if code_departement_changed?
       self.external_id = nil
       self.value = nil
+      self.code_region = code_region
     end
   end