Merge pull request #785 from OpenTechFund/bugfix/784-prevent-multiple-submit-comments-form

Add JS to stop multiple submits of comments form. If works well it ca…

opentech/static_src/src/javascript/main.js

@@ -186,4 +186,19 @@
         }
     }
 
+
+    $('form').filter('.form__comments').submit(function (e) {
+        var $form = $(this);
+        var formValues = $form.serialize();
+        var previousValues = $form.attr('data-django-form-submit-last');
+
+        if (previousValues === formValues) {
+            // Previously submitted - don't submit again
+            e.preventDefault();
+        }
+        else {
+            $form.attr('data-django-form-submit-last', formValues);
+        }
+    });
+
 })(jQuery);