create store_location

app/controllers/job_applieds_controller.rb

@@ -3,6 +3,8 @@ class JobAppliedsController < ApplicationController
   before_action :find_job_id, only: [:new]
 
   def new
+    founded_application = JobApplied.where(user_id: current_user.id, job_id: params[:job_id])
+    return redirect_to job_detail_path(params[:job_id]) if founded_application.present?
   end
 
   def show
@@ -35,7 +37,8 @@ class JobAppliedsController < ApplicationController
 
   def sign_in_validation
     return if signed_in?
-    flash[:warning] = "Please Sign In..."
+    store_location
+    flash[:warning] = Settings.user.warning_signin
     redirect_to login_path
   end
 

app/controllers/jobs_controller.rb

@@ -27,7 +27,8 @@ class JobsController < ApplicationController
   end
 
   def show
-    redirect_to jobs_path unless @job
+    return redirect_to jobs_path unless @job
+    @user = JobApplied.where(user_id: current_user.id, job_id: params[:id]) if signed_in?
   end
 
   private

app/controllers/sessions_controller.rb

@@ -8,7 +8,7 @@ class SessionsController < ApplicationController
     user = User.find_by(email: params[:session][:email].downcase)
     if user && user.authenticate(params[:session][:password])
       sign_in user
-      redirect_to my_page_path
+      redirect_back_or my_page_path
     else
       flash.now[:danger] = Settings.user.sign_in.failed
       render 'new'

app/controllers/users_controller.rb

@@ -40,6 +40,7 @@ class UsersController < ApplicationController
 
   def sign_in_validation
     return if signed_in?
+    store_location
     flash[:warning] = Settings.user.warning_signin
     redirect_to login_path
   end

app/helpers/sessions_helper.rb

@@ -27,4 +27,12 @@ module SessionsHelper
     self.current_user = nil
   end
 
+  def redirect_back_or(default)
+    redirect_to(session[:return_to] || default)
+    session.delete(:return_to)
+  end
+
+  def store_location
+    session[:return_to] = request.url if request.get?
+  end
 end

app/views/jobs/show.html.erb

@@ -18,10 +18,16 @@
           <% end %>/&ensp;
           <%= @job.title.truncate_words(5) %>
         </div>
-        <%= link_to apply_job_path(job_id: @job.id) do %>
+        <% if signed_in? && @user.present? %>
           <div class="apply-job">
-            <strong>Apply Now</strong>
+            <strong>Applied</strong>
           </div>
+        <% else %>
+          <%= link_to apply_job_path(job_id: @job.id) do %>
+            <div class="apply-job">
+              <strong>Apply Now</strong>
+            </div>
+          <% end %>
         <% end %>
       </div>
     </div>
@@ -68,10 +74,16 @@
   </div>
   <div class="row under-descrip">
     <div class="col-6">
-      <%= link_to apply_job_path(job_id: @job.id) do %>
+      <% if signed_in? && @user.present? %>
         <div class="btn btn-info btn-lg apply-btn">
-          <strong>Apply Now</strong>
+          <strong>Applied</strong>
         </div>
+      <% else %>
+        <%= link_to apply_job_path(job_id: @job.id) do %>
+          <div class="btn btn-info btn-lg apply-btn">
+            <strong>Apply Now</strong>
+          </div>
+        <% end %>
       <% end %>
     </div>
     <div class="col-6">