Remove redundant routes in Groups::VariablesController

app/controllers/groups/variables_controller.rb

 module Groups
   class VariablesController < Groups::ApplicationController
-    before_action :variable, only: [:show, :update, :destroy]
     before_action :authorize_admin_build!
 
-    def index
-      redirect_to group_settings_ci_cd_path(group)
-    end
-
-    def show
-    end
-
-    def update
-      if variable.update(variable_params)
-        redirect_to group_variables_path(group),
-                    notice: 'Variable was successfully updated.'
-      else
-        render "show"
-      end
-    end
-
-    def create
-      @variable = group.variables.create(variable_params)
-        .present(current_user: current_user)
-
-      if @variable.persisted?
-        redirect_to group_settings_ci_cd_path(group),
-                    notice: 'Variable was successfully created.'
-      else
-        render "show"
-      end
-    end
-
     def save_multiple
       respond_to do |format|
         format.json do
@@ -41,24 +12,8 @@ module Groups
       end
     end
 
-    def destroy
-      if variable.destroy
-        redirect_to group_settings_ci_cd_path(group),
-                    status: 302,
-                    notice: 'Variable was successfully removed.'
-      else
-        redirect_to group_settings_ci_cd_path(group),
-                    status: 302,
-                    notice: 'Failed to remove the variable.'
-      end
-    end
-
     private
 
-    def variable_params
-      params.require(:variable).permit(*variable_params_attributes)
-    end
-
     def variables_params
       params.permit(variables_attributes: [*variable_params_attributes])
     end
@@ -67,10 +22,6 @@ module Groups
       %i[id key value protected _destroy]
     end
 
-    def variable
-      @variable ||= group.variables.find(params[:id]).present(current_user: current_user)
-    end
-
     def authorize_admin_build!
       return render_404 unless can?(current_user, :admin_build, group)
     end

config/routes/group.rb

@@ -27,10 +27,8 @@ constraints(GroupUrlConstrainer.new) do
       resource :ci_cd, only: [:show], controller: 'ci_cd'
     end
 
-    resources :variables, only: [:index, :show, :update, :create, :destroy] do
-      collection do
-        post :save_multiple
-      end
+    namespace :variables do
+      post :save_multiple
     end
 
     resources :children, only: [:index]

spec/controllers/groups/variables_controller_spec.rb

@@ -9,47 +9,6 @@ describe Groups::VariablesController do
     group.add_master(user)
   end
 
-  describe 'POST #create' do
-    context 'variable is valid' do
-      it 'shows a success flash message' do
-        post :create, group_id: group, variable: { key: "one", value: "two" }
-
-        expect(flash[:notice]).to include 'Variable was successfully created.'
-        expect(response).to redirect_to(group_settings_ci_cd_path(group))
-      end
-    end
-
-    context 'variable is invalid' do
-      it 'renders show' do
-        post :create, group_id: group, variable: { key: "..one", value: "two" }
-
-        expect(response).to render_template("groups/variables/show")
-      end
-    end
-  end
-
-  describe 'POST #update' do
-    let!(:variable) { create(:ci_group_variable, group: group) }
-
-    context 'updating a variable with valid characters' do
-      it 'shows a success flash message' do
-        post :update, group_id: group,
-                      id: variable.id, variable: { key: variable.key, value: 'two' }
-
-        expect(flash[:notice]).to include 'Variable was successfully updated.'
-        expect(response).to redirect_to(group_variables_path(group))
-      end
-
-      it 'renders the action #show if the variable key is invalid' do
-        post :update, group_id: group,
-                      id: variable.id, variable: { key: '?', value: variable.value }
-
-        expect(response).to have_gitlab_http_status(200)
-        expect(response).to render_template :show
-      end
-    end
-  end
-
   describe 'POST #save_multiple' do
     let!(:variable) { create(:ci_group_variable, group: group) }