Change login form to haml from html

app/views/layouts/_navigation.html.erb

@@ -1,6 +1,7 @@
 <%= link_to 'Pretro', root_path, class: 'item' %>
 <%= link_to 'Home', root_path, class: 'item' %>
 <%= link_to 'Teams', teams_path, class: 'item' %>
+<% if user_signed_in? %>
 <div class="right menu">
   <div class="ui simple dropdown item" id="dropdown">
     Account <i class="dropdown icon"></i>
@@ -11,4 +12,5 @@
       <%= link_to 'Log out', root_path, class: 'item' %>
     </div>
   </div>
-</div>
+</div>
+<% end %>

app/views/welcome/index.html.haml

@@ -0,0 +1,23 @@
+%h2.ui.centered.header Welcome to Pretro!
+.ui.container
+  .ui.placeholder.segment
+    .ui.two.column.very.relaxed.stackable.grid
+      .column
+        = form_with scope: :session, class: "ui form", url: login_path do |f|
+          .field
+            =f.label :username
+            .ui.left.icon.input
+              =f.text_field :username, placeholder: "Username"
+              %i.user.icon
+          .field
+            =f.label :password
+            .ui.left.icon.input
+              =f.text_field :password, placeholder: "Password"
+              %i.lock.icon
+          = f.button "Log in", class: "ui blue submit button"
+      .middle.aligned.column
+        .ui.big.button
+          %i.signup.icon
+          Sign Up
+    .ui.vertical.divider
+      Or

config/routes.rb

@@ -3,4 +3,5 @@
   resources :users, only: [:show, :index]
   root 'welcome#index'
   get 'teams', to: 'teams#index'
+  post 'login', to: 'sessions#create'
 end