Formオブジェクトの書き方について

出ているエラーメッセージを入力

class Address < ApplicationRecord
  belongs_to :purchase
end

class Purchase < ApplicationRecord
  attr_accessor :token
  validates :token, presence: true
  belongs_to :user
  belongs_to :item
  has_one :address
end

class PurchaseAddress < ApplicationRecord
  extend ActiveHash::Associations::ActiveRecordExtensions
  include ActiveModel::Model
  attr_accessor :post_number, :municipality, :prefecture_id, :phone_number, :token


  belongs_to :prefecture
   with_options presence: true do
    validates :post_number, format: { with: /A\d{3}[-]\d{4}z/, message: 'Input correctly' }
    validates :municipality
    validates :prefecture_id, numericality: { other_than: 1, message: 'Select' }
    validates :address
    validates :phone_number, format: { with: /A\d{11}z/, message: 'Input only number' }
    validates :token
  end

  def save
  user = User.create(nickname: nickname, name: name,family_name: family_name,namekana: namekana,family_namekana: family_namekana, birth: birth)
  item = Item.create(name: name, text: text, price: price, state_id: state_id, category_id: category_id, prefecture_id: prefecture_id, burden_id: burden_id, shippingday_id: shippingday_id, image: image)
  Purchase.create(user_id: current_user.id, item_id: item_id, token: token)
  Address.create(post_number: post_number, municipality: municipality, prefecture_id: prefecture_id, addresses: addresses, phone_number: phone_number,user_id: current_user.id)
  end
end

class AddressesController < ApplicationController

  def index
    @purchase_address = PurchaseAddress.new
  end

  def create
    @purchase_address = PurchaseAddress.create(address_params)
    if @purchase_address.valid?
     pay_item
      @purchase_address.save
      return redirect_to root_path
    else
      render 'index'
    end
  end

  private

  def address_params
    params.permit(:post_number, :municipality, :prefecture_id, :phone_number, :token)
  end



  def pay_item
    Payjp.api_key = ENV["PAYJP_SECRET_KEY"]
    Payjp::Charge.create(
      amount: item_params[:price],
      card: purchase_params[:token],
      currency:'jpy'
    )
  end

end