LinkedDropDownColumn is also a ChampColumn by the way

app/models/columns/linked_drop_down_column.rb

@@ -1,9 +1,15 @@
 # frozen_string_literal: true
 
-class Columns::LinkedDropDownColumn < Column
-  def column
-    return super if default_column?
-    "#{@column}->#{value_column}" # override column otherwise json path facets will have same id as other
+class Columns::LinkedDropDownColumn < Columns::ChampColumn
+  def initialize(procedure_id:, label:, stable_id:, value_column:, displayable:, type: :text)
+    super(
+      procedure_id:,
+      label:,
+      stable_id:,
+      displayable:,
+      type:,
+      value_column:
+    )
   end
 
   def filtered_ids(dossiers, values)
@@ -14,6 +20,14 @@ class Columns::LinkedDropDownColumn < Column
 
   private
 
+  def column_id
+    if value_column == :value
+      "type_de_champ/#{stable_id}"
+    else
+      "type_de_champ/#{stable_id}->#{path}"
+    end
+  end
+
   def typed_value(champ)
     return nil if default_column?
 

app/models/types_de_champ/linked_drop_down_list_type_de_champ.rb

@@ -75,17 +75,15 @@ class TypesDeChamp::LinkedDropDownListTypeDeChamp < TypesDeChamp::TypeDeChampBas
     [
       Columns::LinkedDropDownColumn.new(
         procedure_id:,
-        table: Column::TYPE_DE_CHAMP_TABLE,
-        column: stable_id.to_s,
         label: libelle_with_prefix(prefix),
+        stable_id: stable_id,
         type: :text,
         value_column: :value,
         displayable:
       ),
       Columns::LinkedDropDownColumn.new(
         procedure_id:,
-        table: Column::TYPE_DE_CHAMP_TABLE,
-        column: stable_id.to_s,
+        stable_id:,
         label: "#{libelle_with_prefix(prefix)} (Primaire)",
         type: :enum,
         value_column: :primary,
@@ -93,8 +91,7 @@ class TypesDeChamp::LinkedDropDownListTypeDeChamp < TypesDeChamp::TypeDeChampBas
       ),
       Columns::LinkedDropDownColumn.new(
         procedure_id:,
-        table: Column::TYPE_DE_CHAMP_TABLE,
-        column: stable_id.to_s,
+        stable_id:,
         label: "#{libelle_with_prefix(prefix)} (Secondaire)",
         type: :enum,
         value_column: :secondary,