Always create menu deroulant champs with a value

app/models/type_de_champ.rb

@@ -52,6 +52,7 @@ class TypeDeChamp < ApplicationRecord
   after_initialize :set_dynamic_type
   after_create :populate_stable_id
   before_save :setup_procedure
+  before_validation :set_default_drop_down_list
 
   attr_reader :dynamic_type
 
@@ -140,6 +141,14 @@ class TypeDeChamp < ApplicationRecord
     ])
   end
 
+  def drop_down_list?
+    type_champ.in?([
+      TypeDeChamp.type_champs.fetch(:drop_down_list),
+      TypeDeChamp.type_champs.fetch(:multiple_drop_down_list),
+      TypeDeChamp.type_champs.fetch(:linked_drop_down_list)
+    ])
+  end
+
   def exclude_from_view?
     type_champ == TypeDeChamp.type_champs.fetch(:explication)
   end
@@ -178,6 +187,12 @@ class TypeDeChamp < ApplicationRecord
 
   private
 
+  def set_default_drop_down_list
+    if drop_down_list? && !drop_down_list
+      self.drop_down_list_attributes = { value: '' }
+    end
+  end
+
   def setup_procedure
     types_de_champ.each do |type_de_champ|
       type_de_champ.procedure = procedure

spec/controllers/new_administrateur/types_de_champ_controller_spec.rb

@@ -0,0 +1,61 @@
+describe NewAdministrateur::TypesDeChampController, type: :controller do
+  let(:admin) { create(:administrateur) }
+
+  describe '#types_de_champs editor api' do
+    let(:procedure) { create(:procedure) }
+
+    before do
+      admin.procedures << procedure
+      sign_in admin
+    end
+
+    let(:type_champ) { TypeDeChamp.type_champs.fetch(:text) }
+
+    context "create type_de_champ text" do
+      before do
+        post :create, params: {
+          procedure_id: procedure.id,
+          type_de_champ: {
+            type_champ: type_champ,
+            libelle: 'Nouveau champ'
+          }
+        }
+      end
+
+      it { expect(response).to have_http_status(:created) }
+    end
+
+    context "validate type_de_champ linked_drop_down_list" do
+      let(:type_champ) { TypeDeChamp.type_champs.fetch(:linked_drop_down_list) }
+
+      before do
+        post :create, params: {
+          procedure_id: procedure.id,
+          type_de_champ: {
+            type_champ: type_champ,
+            libelle: 'Nouveau champ'
+          }
+        }
+      end
+
+      it { expect(response).to have_http_status(:unprocessable_entity) }
+    end
+
+    context "create type_de_champ linked_drop_down_list" do
+      let(:type_champ) { TypeDeChamp.type_champs.fetch(:linked_drop_down_list) }
+
+      before do
+        post :create, params: {
+          procedure_id: procedure.id,
+          type_de_champ: {
+            type_champ: type_champ,
+            libelle: 'Nouveau champ',
+            drop_down_list_value: '--value--'
+          }
+        }
+      end
+
+      it { expect(response).to have_http_status(:created) }
+    end
+  end
+end