Problems with validations using Ajax in Rails

I'm trying to show the validation errors in Rails using ajax in a modal, but I can not show them, I hope they can help me, I will greatly appreciate, I share my code:

_form.html.erb

<%= form_for @enterprise, remote: true, html: { multipart: true } do |f| %>

  <div id="error-messages"></div>    

  <div class="row">
    <div class="small-6 columns">
      <%= f.label :nombre %>
      <%= f.text_field :name, placeholder: "Nombre" %>
    </div>
    <div class="small-6 columns">
      <%= f.label :correo_electronico %>
      <%= f.text_field :email, placeholder: "Correo electronico" %>
    </div>
  </div>

  <div class="row">
    <div class="small-6 columns">
      <%= f.label :contraseña %>
      <%= f.text_field :password, placeholder: "Contraseña" %>
    </div>
    <div class="small-6 columns">
      <%= f.label :confirmar_contraseña %>
      <%= f.text_field :password_confirmation, placeholder: "Confirmar contraseña" %>
    </div>
  </div>

  <div class="row">
    <div class="small-12 columns">
      <%= f.submit "Guardar", class: "button" %>
    </div>
  </div>

<% end %>

update.js.erb

<% if @enterprise.errors.empty? %>
  $('#exampleModal1').foundation('close');
<% else %>
  $('#error_messages').html('<%= render partial: "enterprises/shared/errors" %>');
<% end %>

enterprises / shared / _errors.html.erb

<% if @enterprise.errors.any? %>
  <div id="error_explanation">
    <h2>
      <%= pluralize(@enterprise.errors.count, "error") %> prohibited
      this article from being saved:
    </h2>
    <ul>
      <% @enterprise.errors.full_messages.each do |msg| %>
        <li><%= msg %></li>
      <% end %>
    </ul>
  </div>
<% end %>

enterprises_controller.rb

def update

    respond_to do |format|
      if @enterprise.update(enterprise_params)
        format.html { redirect_to admin_dashboard_path, notice: 'enterprise was successfully created.' }
        format.js   {}
        format.json { render json: @enterprise, status: :created, location: @enterprise }
      else
        format.html { render action: "edit" }
        format.js   { render action: "edit" }
        format.json { render json: @enterprise.errors, status: :unprocessable_entity }
      end
    end
  end