新增关联，点击一次后，灰选菜单

app/view/stage_rela/modal.ejs

@@ -21,7 +21,7 @@
                     </div>
                 </div>
             </div>
-            <form class="modal-footer" id="add-rela-form" method="post" action="/tender/<%= ctx.tender.id %>/measure/stage/<%= ctx.stage.order %>/rela/add">
+            <form class="modal-footer" id="add-rela-form" method="post" action="/tender/<%= ctx.tender.id %>/measure/stage/<%= ctx.stage.order %>/rela/add" onsubmit="$('#add-rela-ok')[0].disabled = true;">
                 <input type="hidden" name="_csrf_j" value="<%= ctx.csrf %>"/>
                 <input type="hidden" name="ar_tid">
                 <input type="hidden" name="ar_sorder">