app/views/login/index.html.erb
<%= render "layouts/sidebar.html.erb" %>
<div class="content-container">
<div class="content clear-top text-center">
<% if flash[:notice] %>
<div class="alert-container">
<p><%= flash.notice %></p>
</div>
<% end %>
<% if session[:is_ta] %>
<%= button_to "Log out", action: "logout" %>
<% else %>
<%= form_tag("/login/attempt", method: "post") do %>
<p>Staff Password:
<input id="password" type="password" name="password" />
</p>
<input id="submit" type="submit" value="submit"/>
<% end %>
<% end %>
</div>
</div>