used devise helpers, fixed specs and created a new partial

app/controllers/vacancies_controller.rb

@@ -1,4 +1,6 @@
 class VacanciesController < ApplicationController
+  before_action :authenticate_user!, only: %i[my_vacancies]
+
   def index
     @vacancies = Vacancy.all
   end
@@ -48,11 +50,7 @@ def destroy
   end
 
   def my_vacancies
-    if current_user.nil?
-      redirect_to root_path unless current_user
-    else
-      @my_vacancies = current_user.vacancies
-    end
+    @my_vacancies = current_user.vacancies
   end
 
   private

app/views/layouts/_header.html.slim

@@ -10,7 +10,7 @@ nav.navbar.navbar-expand-lg.bg-body-tertiary
           = link_to "Home", root_path, class: "nav-link fs-4 text-black"
         li.nav-item
           = link_to "Vacancies", vacancies_path, class: "nav-link fs-4 text-black"
-        - unless current_user.nil?
+        - if user_signed_in?
           li.nav-item
             = link_to "My Vacancies", my_vacancies_vacancies_path, class: "nav-link fs-4 text-black"
       ul.navbar-nav.ms-3

app/views/vacancies/_vacancy.html.slim

@@ -0,0 +1,7 @@
+.col.d-flex.align-items-stretch
+  .card.w-100
+    .card-body.d-flex.flex-column
+      h5.card-title
+        = link_to vacancy.title, vacancy_path(vacancy)
+      p.card-text
+        = truncate(vacancy.body, length: 100)

app/views/vacancies/index.html.slim

@@ -4,10 +4,4 @@
       = button_to "New vacancy", new_vacancy_path, method: :get, class: "btn btn-primary mx-2"
 .row.row-cols-1.row-cols-md-2.row-cols-xl-4.g-4.mx-20.mt-0
   - @vacancies.each do |vacancy|
-    .col.d-flex.align-items-stretch
-      .card.w-100
-        .card-body.d-flex.flex-column
-          h5.card-title
-            = link_to vacancy.title, vacancy_path(vacancy)
-          p.card-text
-            = truncate(vacancy.body, length: 100)
+    = render partial: "vacancy", locals: { vacancy: vacancy }

app/views/vacancies/my_vacancies.html.slim

@@ -4,10 +4,4 @@
       = button_to "New vacancy", new_vacancy_path, method: :get, class: "btn btn-primary mx-2"
 .row.row-cols-1.row-cols-md-2.row-cols-xl-4.g-4.mx-20.mt-0
   - @my_vacancies.each do |vacancy|
-    .col.d-flex.align-items-stretch
-      .card.w-100
-        .card-body.d-flex.flex-column
-          h5.card-title
-            = link_to vacancy.title, vacancy_path(vacancy)
-          p.card-text
-            = truncate(vacancy.body, length: 100)
+    = render partial: "vacancy", locals: { vacancy: vacancy }

spec/requests/vacancies_spec.rb

@@ -2,17 +2,17 @@
 
 RSpec.describe "Vacancies", type: :request do
   describe "GET /vacancies" do
-    it "returns http success" do
+    it "http success" do
       get vacancies_path
       expect(response).to have_http_status(:success)
     end
 
-    it "redirects to root_path if current_user is not authenticated" do
+    it "redirects user to users/sign_in if user is not authenticated" do
       get my_vacancies_vacancies_path
-      expect(response).to redirect_to(root_path)
+      expect(response).to redirect_to(new_user_session_path)
     end
 
-    it "redirects with 302 status code if current_user is not authenticated" do
+    it "redirects user with 302 status code if user is not authenticated" do
       get my_vacancies_vacancies_path
       expect(response).to have_http_status(:found)
     end