Collection Select

gistfile1.erb

 I have a multiselect with checkboxes:
  
  <%= f.label :Category, :class => 'control-label' %>
  <% Category.all.each do |category| -%>
    <div>
      <%= check_box_tag :category_ids, category.id, @job.categories.include?(category), :name => 'job[category_ids][]' %>
      <%= label_tag :category_ids, category.name %>
    </div>
  <% end %>
  
   I want to build a multiple collection Select like this
  
  <div class="from-goup">
  <%= f.label :category, :class => 'control-label' %><div class="controls">
  <%= f.collection_select :category_ids, Category.all, :id, :name, { :selected => @job.categories }, { :multiple => true, :name => 'job[category_ids][]' }, :class => 'form-control'  %>
  </div>
</div>

Error: wrong number of arguments