.modal id="rewards_banner_intro_modal" role="dialog" tabindex="-1"
  .modal-dialog
    .modal-header id="instant-donation-modal-selection"
      center id="intro-container"
        = image_tag "icn-donation-jar@1x.png", id: 'icn-donation-jar'
        h2.modal-title = t ".headline"
        p = t ".intro"
        = hidden_field_tag 'preferred_currency', current_publisher.wallet.default_currency
        = hidden_field_tag 'conversion_rate', current_publisher.wallet.rates[current_publisher.wallet.default_currency]
        = link_to(t(".continue"), "#", class: 'btn btn-primary', id: "open-banner-button")
      center
    .modal-header style="display: none;" id="rewards-banner-container"
      = hidden_field_tag 'publisher_id', current_publisher.id

.modal id="rewards_banner_intro_modal" role="dialog" tabindex="-1"
  .modal-dialog
    .modal-header id="instant-donation-modal-selection"
      center id="intro-container"
        = image_tag "icn-donation-jar@1x.png", id: 'icn-donation-jar'
        h2.modal-title = t ".headline"
        p = t ".intro"
        = link_to(t(".continue"), "#", class: 'btn btn-primary', id: "open-banner-button")
        - if !current_publisher.wallet.default_currency.nil? && !current_publisher.wallet.default_currency.eql?('BAT')
          = hidden_field_tag 'preferred_currency', current_publisher.wallet.default_currency
          = hidden_field_tag 'conversion_rate', current_publisher.wallet.rates[current_publisher.wallet.default_currency]
        - else
          = hidden_field_tag 'preferred_currency', 'USD'
          = hidden_field_tag 'conversion_rate', current_publisher.wallet.rates['USD']
      center
    .modal-header style="display: none;" id="rewards-banner-container"
      = hidden_field_tag 'publisher_id', current_publisher.id

Check default currency for nil and BAT, return USD in either case
Check default currency for nil and BAT, return USD in either case

brave/publishers,brave/publishers,brave/publishers