check if job had been applied

app/controllers/jobs_controller.rb

@@ -22,4 +22,22 @@ class JobsController < ApplicationController
     redirect_to jobs_path if params[:job_id].blank?
     @job_id = params[:job_id]
   end
+
+  def confirm_apply
+
+  end
+
+  def finish_apply
+    @apply_first_name = params["confirm_apply_info"]["first_name"]
+    @apply_last_name = params["confirm_apply_info"]["last_name"]
+    @apply_email = params["confirm_apply_info"]["email"]
+    @job_id = params["confirm_apply_info"]["job_id"]
+
+    if params[:commit] == "Edit"
+      render "jobs/apply"
+    else
+      UserJob.find_by(user_id: current_user.id, job_id: @job_id) ||
+      UserJob.create!(user_id: current_user.id, job_id: @job_id, applied_at: Time.current)
+    end
+  end
 end

app/views/jobs/apply.html.erb

@@ -5,3 +5,36 @@
     <li class="breadcrumb-item">Finish</li>
   </ol>
 </nav>
+
+
+<h3>Apply form</h3>
+<%= form_for "apply_info", url: confirm_path, method: :get do |f| %>
+  <%= f.hidden_field :job_id, value: @job_id %>
+
+  <div class="form-group">
+    <%= f.label :first_name %>
+    <%= f.text_field :first_name, value: (@apply_first_name || @current_user.first_name),
+                                  class: "form-control", required: "true" %>
+  </div>
+
+  <div class="form-group">
+    <%= f.label :last_name %>
+    <%= f.text_field :last_name, value: (@apply_last_name || @current_user.last_name),
+                                 class: "form-control", required: "true" %>
+  </div>
+
+  <div class="form-group">
+    <%= f.label :email %>
+    <%= f.email_field :email, value: (@apply_email || @current_user.email),
+                              class: "form-control", required: "true" %>
+  </div>
+
+  <div class="field">
+    <%= f.label :cv_path %>
+    <input type="file" class="form-control-file" id="cv_path">
+  </div>
+
+  <div class="actions text-center">
+    <%= f.submit "Confirm", class: "btn btn-lg btn-primary"%>
+  </div>
+<% end %>

app/views/jobs/confirm_apply.html.erb

+<nav aria-label="breadcrumb">
+  <ol class="breadcrumb">
+    <li class="breadcrumb-item">New</li>
+    <li class="breadcrumb-item active" aria-current="page">Confirmation</li>
+    <li class="breadcrumb-item">Finish</li>
+  </ol>
+</nav>
+
+<h3>Confirmation</h3>
+<%= form_for "confirm_apply_info", url: done_path, method: :post do |f| %>
+  <%= f.hidden_field :job_id, value: params["apply_info"]["job_id"] %>
+  <%= f.hidden_field :first_name, value: params["apply_info"]["first_name"] %>
+  <%= f.hidden_field :last_name, value: params["apply_info"]["last_name"] %>
+  <%= f.hidden_field :email, value: params["apply_info"]["email"] %>
+
+  <div class="form-group">
+    <%= f.label :first_name, params["apply_info"]["first_name"] %>
+  </div>
+
+  <div class="form-group">
+    <%= f.label :last_name, params["apply_info"]["last_name"] %>
+  </div>
+
+  <div class="form-group">
+    <%= f.label :email, params["apply_info"]["email"] %>
+  </div>
+
+  <div class="actions text-center">
+    <%= f.submit "Edit", class: "btn btn-lg btn-primary"%>
+    <%= f.submit "Done", class: "btn btn-lg btn-primary"%>
+  </div>
+<% end %>

app/views/jobs/finish_apply.html.erb

+<nav aria-label="breadcrumb">
+  <ol class="breadcrumb">
+    <li class="breadcrumb-item">New</li>
+    <li class="breadcrumb-item">Confirmation</li>
+    <li class="breadcrumb-item active" aria-current="page">Finish</li>
+  </ol>
+</nav>
+
+<h2>Thank you for apply</h2>
+<%= link_to "Back to the TOP page", root_path %>

app/views/jobs/show.html.erb

@@ -32,5 +32,9 @@
 
 <div class="job_detail_button">
   <%= link_to "Favorite", "#", class: "btn btn-primary float-right" %>
-  <%= link_to "Apply", apply_path(job_id: @job.id), class: "btn btn-primary float-right mx-3" %>
+  <% if UserJob.find_by(user_id: current_user.id, job_id: @job.id) %>
+    <button type="button" class="btn btn-primary float-right mx-3" disabled>Apply</button>
+  <% else %>
+    <%= link_to "Apply", apply_path(job_id: @job.id), class: "btn btn-primary float-right mx-3" %>
+  <% end %>
 </div>

app/views/users/registrations/new.html.erb

@@ -9,12 +9,6 @@
   </div>
 
   <div class="form-group">
-    <%= f.label :username %>
-    <em>(optional)</em><br/>
-    <%= f.text_field :username, class: "form-control" %>
-  </div>
-
-  <div class="form-group">
     <%= f.label :password %>
     <% if @minimum_password_length %>
     <em>(<%= @minimum_password_length %> characters minimum)</em>

config/routes.rb

@@ -6,6 +6,8 @@ Rails.application.routes.draw do
   get "jobs/city/:city_id", to: "jobs#index", as: :city_jobs
   get "jobs/industry/:industry_id", to: "jobs#index", as: :industry_jobs
   get "apply", to: "jobs#apply"
+  get "confirm", to: "jobs#confirm_apply"
+  post "done", to: 'jobs#finish_apply'
   devise_for :users
   root "tops#index"
   namespace :users do