Follow: follow must be uniq

db/migrate/20170713151123_add_uniq_constraint_on_gestionnaire_dossier_couple.rb

@@ -0,0 +1,7 @@
+class AddUniqConstraintOnGestionnaireDossierCouple < ActiveRecord::Migration[5.0]
+  def up
+    change_column_null :follows, :gestionnaire_id, false
+    change_column_null :follows, :dossier_id, false
+    add_index :follows, [:gestionnaire_id, :dossier_id], unique: true
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20170711125726) do
+ActiveRecord::Schema.define(version: 20170713151123) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -230,9 +230,10 @@ ActiveRecord::Schema.define(version: 20170711125726) do
   end
 
   create_table "follows", force: :cascade do |t|
-    t.integer "gestionnaire_id"
+    t.integer "gestionnaire_id", null: false
-    t.integer "dossier_id"
+    t.integer "dossier_id",      null: false
     t.index ["dossier_id"], name: "index_follows_on_dossier_id", using: :btree
+    t.index ["gestionnaire_id", "dossier_id"], name: "index_follows_on_gestionnaire_id_and_dossier_id", unique: true, using: :btree
     t.index ["gestionnaire_id"], name: "index_follows_on_gestionnaire_id", using: :btree
   end
 

spec/models/dossier_spec.rb

@@ -488,11 +488,11 @@ describe Dossier do
   context 'when dossier is followed' do
     let(:procedure) { create(:procedure, :with_type_de_champ, :with_type_de_champ_private) }
     let(:gestionnaire) { create(:gestionnaire) }
-    let(:follow) { create(:follow, gestionnaire: gestionnaire) }
     let(:date1) { 1.day.ago }
     let(:date2) { 1.hour.ago }
     let(:date3) { 1.minute.ago }
-    let(:dossier) { create(:dossier, :with_entreprise, user: user, procedure: procedure, follows: [follow], initiated_at: date1, received_at: date2, processed_at: date3, motivation: "Motivation") }
+    let(:dossier) { create(:dossier, :with_entreprise, user: user, procedure: procedure, initiated_at: date1, received_at: date2, processed_at: date3, motivation: "Motivation") }
+    let!(:follow) { create(:follow, gestionnaire: gestionnaire, dossier: dossier) }
 
     describe '#export_headers' do
       subject { dossier.export_headers }

spec/serializers/dossier_table_export_serializer_spec.rb

@@ -3,26 +3,26 @@ require 'spec_helper'
 describe DossierTableExportSerializer do
   describe '#emails_accompagnateurs' do
     let(:gestionnaire){ create(:gestionnaire) }
-    let(:follow) { create(:follow, gestionnaire: gestionnaire) }
+    let(:gestionnaire2) { create :gestionnaire}
+    let(:dossier) { create(:dossier) }
 
     subject { DossierTableExportSerializer.new(dossier).emails_accompagnateurs }
 
     context 'when there is no accompagnateurs' do
-      let(:dossier) { create(:dossier, follows: []) }
-
       it { is_expected.to eq('') }
     end
 
     context 'when there one accompagnateur' do
-      let(:dossier) { create(:dossier, follows: [follow]) }
+      before { gestionnaire.followed_dossiers << dossier }
 
       it { is_expected.to eq(gestionnaire.email) }
     end
 
     context 'when there is 2 followers' do
-      let(:gestionnaire2) { create :gestionnaire}
+      before do
-      let(:follow2) { create(:follow, gestionnaire: gestionnaire2) }
+        gestionnaire.followed_dossiers << dossier
-      let(:dossier) { create(:dossier, follows: [follow, follow2]) }
+        gestionnaire2.followed_dossiers << dossier
+      end
 
       it { is_expected.to eq "#{gestionnaire.email} #{gestionnaire2.email}" }
     end