Add reference to user who upload a cerfa or a piece justificative

app/serializers/cerfa_serializer.rb

@@ -3,5 +3,5 @@ class CerfaSerializer < ActiveModel::Serializer
   attributes :created_at,
              :content_url => :url
 
-
+  has_one :user
 end

app/serializers/dossier_serializer.rb

@@ -12,5 +12,6 @@ class DossierSerializer < ActiveModel::Serializer
   has_many :cerfa
   has_many :commentaires
   has_many :champs
+  has_many :pieces_justificatives
   has_many :types_de_piece_justificative
 end

app/serializers/piece_justificative_serializer.rb

@@ -1,5 +1,7 @@
 class PieceJustificativeSerializer < ActiveModel::Serializer
   attributes :created_at,
+             :type_de_piece_justificative_id,
              :content_url => :url
 
+  has_one :user
 end

app/serializers/type_de_piece_justificative_serializer.rb

@@ -3,5 +3,4 @@ class TypeDePieceJustificativeSerializer < ActiveModel::Serializer
              :libelle,
              :description
 
-  has_many :pieces_justificatives
 end

app/serializers/user_serializer.rb

@@ -0,0 +1,3 @@
+class UserSerializer < ActiveModel::Serializer
+  attributes :email
+end