app/views/admin/billing/prices/_search_form.html.erb
<%= form_for :search, url: admin_prices_path, method: :get, html: { class: 'form-horizontal' } do |f| %>
<div class="form-group">
<%= f.label :status, class: 'col-sm-2 control-label' %>
<div class="col-sm-2">
<%= f.select :status, options_for_select(statuses, search.status), { include_blank: t('.all') },
class: 'form-control' %>
</div>
<%= f.label :results_per_page, class: 'col-sm-2 control-label' %>
<div class="col-md-2">
<%= text_field_tag :results_per_page, params[:results_per_page], class: 'form-control', placeholder: t(:results_per_page) %>
</div>
<div class="col-sm-3">
<%= f.submit t('.search_btn'), class: 'btn btn-primary', name: nil %>
<%= link_to t('.reset_btn'), admin_prices_path,
class: 'btn btn-default price-search-form-search-btn' %>
</div>
</div>
<% end %>