introduce prevent-default helper

app/components/form/response/response-card.hbs

@@ -6,7 +6,7 @@
     </div>
   </div>
   <div class='card-body'>
-    <form {{action 'submitResponse' on='submit'}}>
+    <form {{on 'submit' (prevent-default this.submitResponse)}}>
       <Form::Response::ResponseForm @form={{@form}} @response={{@response}} />
 
       <ModelForm::FormActions

app/helpers/prevent-default.js

@@ -0,0 +1,10 @@
+import { helper } from '@ember/component/helper';
+
+export function preventDefault([functionToCall]) {
+  return function (event) {
+    event.preventDefault();
+    functionToCall.apply(this, event, ...arguments);
+  };
+}
+
+export default helper(preventDefault);