amp-form - render all submit-error and submit-success nodes of the form

[fpattis]

Description

currently an amp-form only renders the first html node within the

tag that contains the attribute "submit-error".

it would be great if every node in the form with existing "submit-error" attribute could be rendered.

example:

 <form method="post" action-xhr="/order" enctype="application/x-www-form-urlencoded">

<div submit-error style="color: tomato;">
  <template type="amp-mustache">
    {{#phone}}
    Phone {{phone}}
    {{/phone}}
  </template>
</div>
<div submit-error style="color: tomato;">
  <template type="amp-mustache">
    {{#phone_duplicate}}
    Phone number already exists.
    {{/phone_duplicate}}
  </template>
</div>

</form>

In this example only the first node is ever considered after submit of the form and the second is never rendered, even if the error response contains both properties "phone_duplicate" and "phone" or only the second one "phone_duplicate".

Alternatives Considered

none

Additional Context

No response

[stale]

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