hpi-schuelerklub/workshop-portal

<form action="" method="GET">
    <% filter = params[:filter] || {} %>
    <% ApplicationLetter.statuses.keys.each do |key| %>
      <%= label :filter, key do %>
          <%= check_box_tag "filter[#{key}]", "1", filter[key] %>
          <%= t "application_status.#{key}" %>
      <% end %>
      <br>
    <% end %>
    <%= hidden_field_tag 'sort', params[:sort] if params[:sort] %>
    <%= hidden_field_tag 'order', params[:order] if params[:order] %>
    <input class="btn btn-default btn-sm" type="submit" value="<%= t 'events.applicants_overview.filter' %>">
</form>