<%= error_messages_for @quantity %>

<%= f.select :domain, domain_options, {required: true} %>

<% Quantity.domains.each_key do |d| %>

<%= f.select :parent_id, parent_options(d), {required: true, label: :field_parent_quantity, include_blank: t('.null_parent')} %>

<% end %>

<%= f.text_field :name, size: 25, required: true %>

<%= f.text_field :description, style: "width: 100%;" %>

<%= f.text_field :formula, placeholder: t('.formula_placeholder'), style: "width: 100%;" %>

<%= f.check_box :primary %>

<%= javascript_tag do %> function domainChange() { box = $(this).closest('div'); box.find('[id^=parent_select_]').prop('disabled', true).hide(); box.find('[id^=parent_select_] select').attr('name', 'placeholder'); domain = $(this).val(); box.find('[id=parent_select_'+domain+']').prop('disabled', false).show(); box.find('[id=parent_select_'+domain+'] select') .attr('name', 'quantity[parent_id]'); } $('form').on('change', '#quantity_domain', domainChange); //Firefox does not emit 'change' signal when preserving form over reload $(document).ready(function() { domainChange(); }); <% end %>