app/views/imports/_sms_opt_in_modal.html.erb
<div class="modal show" id="smsOptIn" style="display: block;">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="smsOptIn">
SMS Opt In
</h5>
<a type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</a>
</div>
<div class="modal-body">
<div>
Please check this box to verify that these mobile numbers have opted in to receive SMS notifications. (They will have the opportunity to opt out or update their preferences.)
</div>
<br>
<span class="form-check checkbox-style">
<%= form.label :sms_opt_in_label, "Opt into SMS notifications", { class: "form-check-label"} %>
<%= form.check_box :sms_opt_in, { id: "sms-opt-in-checkbox", class: "form-check-input" } %>
<span>
</div>
<div class="modal-footer">
<%= form.submit "Continue Import",
{ id: "sms-opt-in-continue-button", class: "main-btn primary-btn btn-hover", disabled: true } %>
</div>
</div>
</div>
<script type="text/javascript">
document.getElementById('sms-opt-in-checkbox').addEventListener('change', function (event) {
document.getElementById('sms-opt-in-continue-button').disabled = !event.target.checked;
})
</script>
</div>