Ask phone number validation only once by session - ruby-on-rails

Question

I integrated phone number verification in my app with this tutorial
here, the problem is when the visitor go on a profil from my results page and back to the results page the modal of the phone number verification reappears
I would know how to ask a phone number only once
My phone verification view
<div class="modal show" id="myModalpin" role="dialog">
<div class="modal-dialog">
<!-- Modal content-->
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal">×</button>
<h4 class="modal-title"> Vérification téléphone</h4>
</div>
<div class="modal-body">
<div id="send-pin">
<h4>Nous allons vous envoyer un code par sms afin de vérifier votre numéro <br> Est-ce le bon numéro ?</h4>
<%= form_for PhoneNumber.new, remote: true do |f| %>
<div class="form-group">
<%= f.text_field :phone_number %>
</div>
<%= f.submit "Envoyer", class: "btn btn-danger", id: 'send-pin-link' %>
<% end %>
</div>
<div id="verify-pin">
<h3>Entrer votre code de comfirmation</h3>
<%= form_tag phone_numbers_verify_path, remote: true do |f| %>
<%= hidden_field_tag 'hidden_phone_number', '' %>
<div class="form-group">
<%= text_field_tag :pin %>
</div>
<%= submit_tag "Verifier", class: "btn btn-primary" %>
<% end %>
</div>
<div id="status-box" class="alert alert-success">
<p id="status-message">Status: Haven’t done anything yet</p>
</div>
</div>
</div>
</div>
</div>
<% content_for(:after_js) do %>
<%= javascript_tag do %>
$(window).on('load',function(){
$('#myModalpin').modal('show');
});
<% end %>
<% end %>

Answer 1

A quick and a bit dirty solution would be to add condition to the execution of your javascript.
Let say that your phone object is in #phone variable created in your controller.
then you can transform your code with
<% content_for(:after_js) do %>
<%= javascript_tag do %>
$(window).on('load',function(){
<% if #phone.nil? %>
$('#myModalpin').modal('show');
<% end %>
});
<% end %>
<% end %>
A bit cleaner would be to put it in a dedicated view file with the extension .js.erb