app/views/rails_admin/main/display_order_action.html.erb

display_order_action.html.erb

<%= form_tag("", method: "put") do %>
    <table class="table table-striped　table-bordered">
        <tr>
            <th>Name</th>
            <th>Order</th>
        </tr>
        <% @objects.each do |object| %>
            <tr>
                <td><%=object.name%></td>
                <td><input type="number" value="<%=object.order%>" name="products[][order]"></td>
                <input type="hidden" value="<%=object.id%>" name="products[][id]"/>
            </tr>
        <% end %>
    </table>
    <%= submit_tag("更新") %>
<% end %>