new.html.erb

<h2>Sign in</h2>

<%- if devise_mapping.authenticatable? %>
  <% form_for resource_name, resource, :url => session_path(resource_name) do |f| -%>
    <p><%= f.label :email %></p>
    <p><%= f.text_field :email %></p>

    <p><%= f.label :password %></p>
    <p><%= f.password_field :password %></p>

    <% if devise_mapping.rememberable? -%>
      <p><%= f.check_box :remember_me %> <%= f.label :remember_me %></p>
    <% end -%>

    <p><%= f.submit "Sign in" %></p>
  <% end -%>
<% end%>

<%- if devise_mapping.recoverable? %>
  <%= link_to "Forgot password?", new_password_path(resource_name) %><br />
<% end -%>

<%- if devise_mapping.confirmable? %>
  <%= link_to "Didn't receive confirmation instructions?", new_confirmation_path(resource_name) %><br />
<% end -%>

<%- if devise_mapping.lockable? %>
  <%= link_to "Didn't receive unlock instructions?", new_unlock_path(resource_name) %><br />
<% end -%>