payjpのクレジットカード登録機能の実装（controllreの動作が上手くいきません）

前提・実現したいこと

payjpのクレジットカード登録機能の実装

発生している問題・エラーメッセージ

カード登録フォームでjavascriptでは処理が上手く行っているようなのですが
createメソッドでparams['payjp_token']がないと言われてしまう
（条件分岐でparams['payjp_token']が空の場合の処理に飛んでしまう）

該当のソースコード

登録フォームのビュー

%div.mypage-content
  %section.purchace
    %h2.profile__top クレジットカード情報入力
    .content
      = form_with url: "/credit", method: :post, html: { name: "inputForm" } do |f|
        .content__inner
          .resister-credit
            = f.label :カード番号, class: "resister-credit__number" 
            %span.resister-credit__need 必須
            = f.text_field :card_number, name: "card_number", id:"card_number", type: 'text', placeholder: "半角数字のみ", maxlength: "16", class:"resister-credit__text"
            %ul.resister-credi__errow
            %ul.resister-credi__card
              = image_tag "credit01.JPG", class: "resister-credit__list"
          %div.resister-credit.margin
            = f.label :有効期限, class: "resister-credit__number" 
            %span.resister-credit__need 必須
            %br
            %div.resister-credit__limit
              = f.select :exp_month, [["01",1],["02",2],["03",3],["04",4],["05",5],["06",6],["07",7],["08",8],["09",9],["10",10],["11",11],["12",12]],{}, class: "resister-credit__limit__mm", name: "exp_month", id: "exp_month"
              %i.fas.fa-chevron-down
              %span 月
            %div.resister-credit__limit
              = f.select :exp_year, [["19",2019],["20",2020],["21",2021],["22",2022],["23",2023],["24",2024],["25",2025],["26",2026],["27",2027],["28",2028],["29",2029]],{}, class: "resister-credit__limit__mm", name: "exp_year", id:"exp_year"
              %i.fas.fa-chevron-down
              %span 年
          %div.resister-credit.margin
            = f.label :セキュリティーコード, class: "resister-credit__number" 
            %span.resister-credit__need 必須
            = f.text_field :cvc, name: "cvc", id:"cvc", type: 'text',placeholder: "カード背面4桁もしくは3桁の番号", maxlength: "4",class:"resister-credit__text"
          .submitter
            = f.submit "追加する", class: 'profile__top__content__button margin', id: "token_submit"

payjp.js

document.addEventListener(
  "DOMContentLoaded", e => {
    if (document.getElementById("token_submit") != null) { 
      Payjp.setPublicKey("pk_test_fa4c0aef52ad35e72960c1b3"); 
      let btn = document.getElementById("token_submit"); 
      btn.addEventListener("click", e => { 
        e.preventDefault(); 
        let card = {
          number: document.getElementById("card_number").value,
          cvc: document.getElementById("cvc").value,
          exp_month: document.getElementById("exp_month").value,
          exp_year: document.getElementById("exp_year").value
        }; 
        Payjp.createToken(card, (status, response) => {
          if (status === 200) { 
            $("#card_number").removeAttr("name");
            $("#cvc").removeAttr("name");
            $("#exp_month").removeAttr("name");
            $("#exp_year").removeAttr("name");
            $("#card_token").append(
              $('<input type="hidden" name="payjp_token">').val(response.id)
            ); 
            document.inputForm.submit();
            alert("登録が完了しました"); 
          } else {
            alert("カード情報が正しくありません。"); 
          }
        });
      });
    }
  },
  false
);

コントローラー

class CreditController < ApplicationController
  require 'payjp'
  before_action :get_payjp_info,only: [:create]

  def new
    card = Card.where(user_id: current_user.id).first
    redirect_to action: "index" if card.present?
  end

  def create
    if params['payjp_token'].blank?
      redirect_to action: "new"
    else
      customer = Payjp::Customer.create(
      description: 'test', 
      email: current_user.email,
      card: params['payjp_token'], 
      metadata: {user_id: current_user.id}
      )
      @card = Card.new(user_id: current_user.id, customer_id: customer.id, card_id: customer.default_card)
      if @card.save
        redirect_to action: "index"
      else
        redirect_to action: "new"
      end
    end
  end

  def index
    @credit = "仮置き"
  end

  private
  
  def get_payjp_info
    Payjp.api_key = "sk_test_91d9387346272e9207fde8f5"
  end
end