app/views/hello/authentication/_sign_in.html.erb
<%= form_for @sign_in, as: :sign_in, url: sign_in_path, html: {class: "form-horizontal", role: "form"} do |f| %>
<!-- Errors -->
<% if @sign_in.errors.any? %>
<%= render '/hello/shared/errors', business: @sign_in %>
<% end %>
<div class="form-group">
<%= f.label :login, "Email or Username", class: "col-sm-4 control-label" %>
<div class="col-sm-4">
<%= f.text_field :login, class: "form-control", placeholder: "Email or Username" %>
<% if @sign_in.bad_login? %>
<blockquote style="border-color: #a94442">
<p class="text-danger">This login was not found in our database.</p>
<p>Do you want to <%= link_to "Sign Up", hello.sign_up_path %> instead?</p>
</blockquote>
<% end %>
</div>
</div>
<div class="form-group">
<%= f.label :password, class: "col-sm-4 control-label" %>
<div class="col-sm-4">
<%= f.password_field :password, class: "form-control", placeholder: "Password" %>
<% if @sign_in.bad_password? %>
<blockquote style="border-color: #a94442">
<p class="text-danger">Your password does not match that in our database.</p>
<footer>
Did you <%= link_to "forget your password", hello.forgot_passwords_path %>?
</footer>
</blockquote>
<% end %>
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-4 col-sm-4">
<div class="checkbox">
<label>
<%= check_box_tag :keep_me, '1', false %>
Keep me signed in for <strong>30</strong> days
</label>
</div>
</div>
</div>
<!--
<div class="form-group">
<div class="col-sm-offset-4 col-sm-4">
<%= link_to "I forgot my password", hello.forgot_passwords_path %>
</div>
</div>
-->
<div class="form-group">
<div class="col-sm-offset-4 col-sm-4">
<%= f.submit "Sign In", class: "btn btn-primary" %>
</div>
</div>
<% end %>