Remove repetition types_de_champ on type_champ change

app/models/type_de_champ.rb

@@ -83,6 +83,7 @@ class TypeDeChamp < ApplicationRecord
   before_validation :check_mandatory
   before_save :remove_piece_justificative_template, if: -> { type_champ_changed? }
   before_validation :remove_drop_down_list, if: -> { type_champ_changed? }
+  before_save :remove_repetition, if: -> { type_champ_changed? }
 
   def valid?(context = nil)
     super
@@ -302,4 +303,10 @@ class TypeDeChamp < ApplicationRecord
       self.drop_down_options = nil
     end
   end
+
+  def remove_repetition
+    if !repetition?
+      types_de_champ.destroy_all
+    end
+  end
 end

spec/factories/type_de_champ.rb

@@ -108,6 +108,12 @@ FactoryBot.define do
     end
     factory :type_de_champ_repetition do
       type_champ { TypeDeChamp.type_champs.fetch(:repetition) }
+
+      trait :with_types_de_champ do
+        after(:build) do |type_de_champ, _evaluator|
+          type_de_champ.types_de_champ << create(:type_de_champ, libelle: 'sub type de champ')
+        end
+      end
     end
 
     trait :private do

spec/models/type_de_champ_shared_example.rb

@@ -89,6 +89,20 @@ shared_examples 'type_de_champ_spec' do
       end
     end
 
+    context 'remove repetition' do
+      let(:tdc) { create(:type_de_champ_repetition, :with_types_de_champ) }
+
+      before do
+        tdc.update_attribute('type_champ', target_type_champ)
+      end
+
+      context 'when the target type_champ is not repetition' do
+        let(:target_type_champ) { TypeDeChamp.type_champs.fetch(:text) }
+
+        it { expect(tdc.types_de_champ).to be_empty }
+      end
+    end
+
     context 'delegate validation to dynamic type' do
       subject { build(:type_de_champ_text) }
       let(:dynamic_type) do