add move_up for type de champ controller

app/controllers/admin/types_de_champ_controller.rb

@@ -21,6 +21,20 @@ class Admin::TypesDeChampController < AdminController
     params.require(:procedure).permit(types_de_champ_attributes: [:libelle, :description, :order_place, :type_champ, :id])
   end
 
+  def move_up
+    index = params[:index].to_i
+    if @procedure.types_de_champ.count < 2 || index < 1
+      render json: {}, status: 400
+    else
+      types_de_champ_to_move_down = @procedure.types_de_champ_ordered[index - 1]
+      types_de_champ_to_move_up = @procedure.types_de_champ_ordered[index]
+      types_de_champ_to_move_down.update_attributes(order_place: index)
+      types_de_champ_to_move_up.update_attributes(order_place: index - 1)
+
+      render 'show', format: :js
+    end
+  end
+
   private
 
   def retrieve_procedure

config/routes.rb

@@ -42,7 +42,9 @@ Rails.application.routes.draw do
   namespace :admin do
     get 'sign_in' => '/administrateurs/sessions#new'
     resources :procedures do
-      resource :types_de_champ, only: [:show, :update]
+      resource :types_de_champ, only: [:show, :update] do
+        post '/:index/move_up' => 'types_de_champ#move_up'
+      end
       resources :types_de_champ, only: [:destroy]
       resource :pieces_justificatives, only: [:edit, :update]
     end

spec/controllers/admin/types_de_champ_controller_spec.rb

@@ -98,4 +98,44 @@ describe Admin::TypesDeChampController, type: :controller do
       it { expect(subject.status).to eq(404) }
     end
   end
+
+  describe 'POST #move_up' do
+    subject { post :move_up, procedure_id: procedure.id, index: index, format: :js }
+    context 'when procedure have no type de champ' do
+      let(:index) { 0 }
+      let(:procedure) { create(:procedure) }
+      it { expect(subject.status).to eq(400) }
+    end
+    context 'when procedure have only one type de champ' do
+      let(:index) { 1 }
+      let(:procedure) { create(:procedure) }
+      let!(:type_de_champ) { create(:type_de_champ, procedure: procedure) }
+      it { expect(subject.status).to eq(400) }
+    end
+    context 'when procedure have tow type de champs' do
+      context 'when index == 0' do
+        let(:index) { 0 }
+        let(:procedure) { create(:procedure) }
+        let!(:type_de_champ_1) { create(:type_de_champ, procedure: procedure) }
+        let!(:type_de_champ_2) { create(:type_de_champ, procedure: procedure) }
+        it { expect(subject.status).to eq(400) }
+      end
+      context 'when index > 0' do
+        let(:index) { 1 }
+        let(:procedure) { create(:procedure) }
+        let!(:type_de_champ_0) { create(:type_de_champ, procedure: procedure, order_place: 0) }
+        let!(:type_de_champ_1) { create(:type_de_champ, procedure: procedure, order_place: 1) }
+
+        it { expect(subject.status).to eq(200) }
+        it { expect(subject).to render_template('show') }
+        it 'changes order places' do
+          post :move_up, procedure_id: procedure.id, index: index, format: :js
+          type_de_champ_0.reload
+          type_de_champ_1.reload
+          expect(type_de_champ_0.order_place).to eq(1)
+          expect(type_de_champ_1.order_place).to eq(0)
+        end
+      end
+    end
+  end
 end