Add repetitions to api

app/models/champ.rb

@@ -5,10 +5,11 @@ class Champ < ApplicationRecord
   has_many :commentaires
   has_one_attached :piece_justificative_file
 
-  # We declare champ specific relationships (Champs::CarteChamp and Champs::SiretChamp)
+  # We declare champ specific relationships (Champs::CarteChamp, Champs::SiretChamp and Champs::RepetitionChamp)
   # here because otherwise we can't easily use includes in our queries.
   has_many :geo_areas, dependent: :destroy
   belongs_to :etablissement, dependent: :destroy
+  has_many :champs, -> { ordered }, foreign_key: :parent_id, inverse_of: :parent, dependent: :destroy
 
   delegate :libelle, :type_champ, :order_place, :mandatory?, :description, :drop_down_list, :exclude_from_export?, :exclude_from_view?, :repetition?, to: :type_de_champ
 

app/models/champs/repetition_champ.rb

@@ -1,6 +1,4 @@
 class Champs::RepetitionChamp < Champ
-  has_many :champs, -> { ordered }, foreign_key: :parent_id, inverse_of: :parent, dependent: :destroy
-
   accepts_nested_attributes_for :champs, allow_destroy: true
 
   def rows
@@ -21,11 +19,21 @@ class Champs::RepetitionChamp < Champ
     # The user cannot enter any information here so it doesn’t make much sense to search
   end
 
+  def rows_for_export
+    rows.each.with_index(1).map do |champs, index|
+      Champs::RepetitionChamp::Row.new(index: index, dossier_id: dossier_id.to_s, champs: champs)
+    end
+  end
+
   class Row < Hashie::Dash
     property :index
     property :dossier_id
     property :champs
 
+    def read_attribute_for_serialization(attribute)
+      self[attribute]
+    end
+
     def spreadsheet_columns
       [
         ['Dossier ID', :dossier_id],

app/models/dossier.rb

@@ -137,12 +137,18 @@ class Dossier < ApplicationRecord
       champs: [
         :geo_areas,
         :etablissement,
-        piece_justificative_file_attachment: :blob
+        piece_justificative_file_attachment: :blob,
+        champs: [
+          piece_justificative_file_attachment: :blob
+        ]
       ],
       champs_private: [
         :geo_areas,
         :etablissement,
-        piece_justificative_file_attachment: :blob
+        piece_justificative_file_attachment: :blob,
+        champs: [
+          piece_justificative_file_attachment: :blob
+        ]
       ],
       justificatif_motivation_attachment: :blob,
       attestation: [],