AlchemyCMS/alchemy_cms

<%= form_tag url_for, method: :get, class: 'per-page-select-form' do |f| %>
  <% search_filter_params.reject { |k, _| k == 'page' || k == 'per_page' }.each do |key, value| %>
    <% if value.is_a? ActionController::Parameters %>
      <% value.each do |k, v| %>
        <%= hidden_field_tag "#{key}[#{k}]", v, id: nil %>
      <% end %>
    <% else %>
      <%= hidden_field_tag key, value, id: nil %>
    <% end %>
  <% end %>
  <label>
    <%= Alchemy.t(:items_per_page, model_name: resource_model.model_name.human(count: 2)) %>
    <%= select_tag :per_page,
      options_for_select(
        items_per_page_options,
        items_per_page
      ),
      onchange: 'this.form.submit()' %>
  </label>
<% end %>