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buttons on forms are disabled on submit (re-enabled after the request is complete)

app/assets/javascripts/application.js

@@ -20,10 +20,26 @@
 //= require_tree .
 
 $(document).ready(function(){
+
   $(".one_click_select").live("click", function(){
     $(this).select();
   });
 
+
+  $('body').on('ajax:complete, ajax:beforeSend, submit', 'form', function(e){
+    var buttons = $('[type="submit"]', this);
+    switch( e.type ){
+      case 'ajax:beforeSend':
+      case 'submit':
+        buttons.attr('disabled', 'disabled');
+      break;
+      case ' ajax:complete':
+      default:
+        buttons.removeAttr('disabled');
+      break;
+    }
+  })
+
   $(".account-box").mouseenter(showMenu);
   $(".account-box").mouseleave(resetMenu);