Discussion on: Adding reCaptcha v3 to a Rails app without a gem

I know this is a little late but I just had to solve this problem so hopefully my response can help someone else. Basically, since my form is a create action, I edited my create.js file to update the token on failed submission. Here's how:

Here's a portion of my form where I render a partial that include my captcha tag:

...

<div class="col-12">
  <div class="form-group captcha captcha-lead_creation_modal">
    <%= render "potential_clients/captcha_field", action: 'lead_creation_modal' %>
  </div>
</div>

<div class="col-lg-12 d-flex m-t-20">
  <%= f.submit 'Request More Information', class: "btn btn-md btn-block btn-info-gradiant" %>
</div>

Here's the complete partial: potential_clients/captcha_field:

<%= recaptcha_execute(action) %>

Finally, in my create.js I do the following:

// other error handling / success code goes here

$(".captcha-lead_creation_modal").html("<%= j render 'potential_clients/captcha_field', action: 'lead_creation_modal' %>")

This will re-render the portion of the form with the token and since it hits the helper function, a new token is generated!